/* ============================================
   QR Code Generator - HelpTech.cz
   Modern, responsive CSS with dark mode support
   ============================================ */

/* CSS Custom Properties (Variables) */
:root {
    /* HelpTech Brand Colors */
    --primary-color: #f76601;
    --secondary-color: #f7931e;
    --primary-dark: #e55a01;
    --secondary-dark: #e8851c;

    /* Light Theme Colors */
    --bg-color: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --border-color: #e2e8f0;
    --shadow-color: rgba(15, 23, 42, 0.08);
    --shadow-hover: rgba(15, 23, 42, 0.12);

    /* Enhanced Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    --gradient-primary-hover: linear-gradient(135deg, var(--primary-dark), var(--secondary-dark));
    --gradient-bg: linear-gradient(135deg, #fafbfc 0%, #f4f6f8 100%);

    /* Component Colors */
    --success-color: #10b981;
    --success-bg: #d1fae5;
    --error-color: #ef4444;
    --error-bg: #fee2e2;
    --warning-color: #f59e0b;
    --warning-bg: #fef3c7;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;

    /* Fonts */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Dark Theme */
[data-theme="dark"] {
    --bg-color: #111827;
    --bg-secondary: #1f2937;
    --bg-tertiary: #374151;
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --text-muted: #9ca3af;
    --border-color: #4b5563;
    --shadow-color: rgba(0, 0, 0, 0.25);
    --shadow-hover: rgba(0, 0, 0, 0.35);

    /* Vylepšené barvy pro tmavé téma */
    --success-bg: #064e3b;
    --error-bg: #7f1d1d;
    --warning-bg: #78350f;
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-color);
    transition: background-color var(--transition-normal), color var(--transition-normal);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Container */
.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* Header */
.header {
    background-color: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-sm) 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.95);
}

[data-theme="dark"] .header {
    background-color: rgba(15, 23, 42, 0.95);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.header-title i {
    color: var(--primary-color);
    font-size: var(--font-size-lg);
}

.theme-toggle {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-1px);
}

/* Main Content */
.main {
    flex: 1;
    padding: var(--spacing-lg) 0;
    background: var(--bg-color);
}


/* Mobile-first default */
.wizard-container {
    display: block;
    width: 100%;
}

/* SVG ikony pro kroky */
.step-icon {
    width: 1.2em;
    height: 1.2em;
    margin-right: 0.5em;
    vertical-align: text-bottom;
    color: var(--primary-color);
}

/* SVG ikony pro tlačítka */
.btn-icon {
    width: 1em;
    height: 1em;
    margin-right: 0.5em;
    vertical-align: text-bottom;
}

.btn-icon-small {
    width: 0.9em;
    height: 0.9em;
    vertical-align: text-bottom;
}

/* QR placeholder ikona */
.qr-placeholder-icon {
    width: 2em;
    height: 2em;
    color: var(--text-secondary);
    margin-bottom: 0.5em;
}

/* Loading spinner ikona */
.loading-icon {
    width: 2em;
    height: 2em;
    animation: spin 1s linear infinite;
    color: var(--primary-color);
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Mobilní velikosti ikon */
@media (max-width: 768px) {
    .step-icon {
        width: 0.9em;
        height: 0.9em;
        margin-right: 0.3em;
    }

    .btn-icon {
        width: 0.8em;
        height: 0.8em;
        margin-right: 0.3em;
    }

    .btn-icon-small {
        width: 0.7em;
        height: 0.7em;
    }

    .qr-placeholder-icon {
        width: 1.5em;
        height: 1.5em;
    }

    .loading-icon {
        width: 1.5em;
        height: 1.5em;
    }

    /* Odstranit vertikální spojovací čáry na mobilu */
    .progress-steps-vertical .progress-step:not(:last-child)::after {
        display: none !important;
    }

    .progress-steps-vertical .progress-step.completed::after,
    .progress-steps-vertical .progress-step.active::after {
        display: none !important;
    }

    /* Vylepšené tmavé téma pro mobil */
    [data-theme="dark"] {
        --bg-color: #0f172a;
        --bg-secondary: #1e293b;
        --bg-tertiary: #334155;
    }

    [data-theme="dark"] .wizard-step {
        background: var(--bg-secondary);
        border-color: var(--border-color);
        box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    }

    [data-theme="dark"] .input-field,
    [data-theme="dark"] .option-select {
        background: var(--bg-tertiary);
        border-color: var(--border-color);
        color: var(--text-primary);
    }

    [data-theme="dark"] .input-field:focus,
    [data-theme="dark"] .option-select:focus {
        border-color: var(--primary-color);
        box-shadow: 0 0 0 3px rgba(247, 102, 1, 0.1);
    }

    [data-theme="dark"] .btn {
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    }

    [data-theme="dark"] .progress-step.active .step-circle {
        background: var(--primary-color);
        color: white;
        box-shadow: 0 0 0 4px rgba(247, 102, 1, 0.2);
    }

    [data-theme="dark"] .progress-step.completed .step-circle {
        background: var(--success-color);
        color: white;
    }

    [data-theme="dark"] .header {
        background: var(--bg-secondary);
        border-bottom: 1px solid var(--border-color);
    }

    [data-theme="dark"] .footer {
        background: var(--bg-secondary);
        border-top: 1px solid var(--border-color);
    }

    /* Opravit bílé pozadí wizardu v tmavém režimu */
    [data-theme="dark"] {
        background: var(--bg-color) !important;
    }

    [data-theme="dark"] body {
        background: var(--bg-color) !important;
    }

    [data-theme="dark"] .main {
        background: var(--bg-color) !important;
    }

    [data-theme="dark"] .wizard {
        background: var(--bg-color) !important;
    }

    [data-theme="dark"] .wizard-container {
        background: var(--bg-color) !important;
    }

    [data-theme="dark"] .container {
        background: var(--bg-color) !important;
    }
}

/* Desktop layout - sidebar vlevo */
@media (min-width: 769px) {
    .wizard-container {
        display: flex !important;
        flex-direction: row !important;
        gap: var(--spacing-xl) !important;
        align-items: flex-start !important;
    }

    .wizard-sidebar {
        order: 1 !important;
        width: 280px !important;
        flex-shrink: 0 !important;
        flex-basis: 280px !important;
        min-width: 280px !important;
        margin-bottom: 0 !important;
        background: var(--bg-secondary) !important;
        padding: var(--spacing-lg) !important;
        border-radius: var(--radius-lg) !important;
        border: 1px solid var(--border-color) !important;
    }

    .wizard {
        order: 2 !important;
        flex: 1 !important;
        margin: 0 !important;
        padding: 0 !important;
        background: transparent !important;
        box-shadow: none !important;
        border-radius: 0 !important;
    }

    .wizard-progress-vertical {
        background: var(--bg-secondary) !important;
        border-radius: var(--radius-lg) !important;
        padding: var(--spacing-lg) !important;
        margin: 0 !important;
        border: 1px solid var(--border-color) !important;
    }

    /* Vertikální progressbar na desktopu */
    .progress-steps-vertical {
        display: flex !important;
        flex-direction: column !important;
        gap: var(--spacing-md) !important;
        padding: 0 !important;
        background: transparent !important;
    }

    .progress-steps-vertical .progress-step {
        display: flex !important;
        flex-direction: row !important;
        align-items: center !important;
        gap: var(--spacing-md) !important;
        padding: var(--spacing-sm) !important;
        border-radius: var(--radius-sm) !important;
        cursor: pointer !important;
        transition: background-color 0.2s ease !important;
    }

    .progress-steps-vertical .step-label {
        display: block !important;
        font-size: var(--font-size-sm) !important;
        font-weight: 500 !important;
        color: var(--text-secondary) !important;
    }

    .progress-steps-vertical .step-circle {
        width: 40px !important;
        height: 40px !important;
        font-size: 14px !important;
        flex-shrink: 0 !important;
    }

    /* Čísla kroků na desktopu */
    .progress-steps-vertical .step-circle .step-number {
        font-size: 16px !important;
        font-weight: 600 !important;
    }

    /* Skrýt horizontální čáry na desktopu */
    .progress-steps-vertical::before,
    .progress-steps-vertical::after {
        display: none !important;
    }
}

.wizard-progress-vertical {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    position: sticky;
    top: 100px;
}

.progress-steps-vertical {
    display: flex !important;
    flex-direction: column !important;
    gap: var(--spacing-lg);
    align-items: stretch;
    justify-content: flex-start;
}

.wizard-sidebar .progress-steps-vertical .progress-step {
    display: flex !important;
    align-items: center;
    gap: var(--spacing-md);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    position: relative;
    flex-direction: row !important;
    width: 100%;
}

.progress-steps-vertical .progress-step:not(:last-child)::after {
    content: '';
    position: absolute;
    left: 14px;
    top: 40px;
    width: 2px;
    height: var(--spacing-lg);
    background: var(--border-color);
    transition: background var(--transition-normal);
}

.progress-steps-vertical .progress-step.completed::after {
    background: var(--success-color);
}

.progress-steps-vertical .progress-step.active::after {
    background: var(--primary-color);
}

.progress-steps-vertical .step-circle {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: var(--font-size-sm);
    transition: all var(--transition-normal);
    background: var(--bg-color);
    color: var(--text-muted);
    flex-shrink: 0;
}

.progress-steps-vertical .progress-step.active .step-circle {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
    transform: scale(1.1);
}

.progress-steps-vertical .progress-step.completed .step-circle {
    background: var(--success-color);
    border-color: var(--success-color);
    color: white;
}

.progress-steps-vertical .step-label {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    font-weight: 500;
    line-height: 1.3;
}

.progress-steps-vertical .progress-step.active .step-label {
    color: var(--primary-color);
    font-weight: 600;
}

.progress-steps-vertical .progress-step.completed .step-label {
    color: var(--success-color);
}

.progress-steps-vertical .progress-step:hover {
    background: var(--bg-tertiary);
}

/* Main Wizard Content */
.wizard {
    flex: 1;
    max-width: 700px;
    margin: 0;
    background: var(--bg-color);
    border-radius: var(--radius-lg);
}

/* Wizard Content */
.wizard-content {
    position: relative;
    min-height: 400px;
}

.wizard-step {
    display: none;
    animation: fadeIn 0.3s ease;
    background: var(--bg-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.wizard-step.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.step-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--border-color);
}

.step-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.step-title i {
    color: var(--primary-color);
}

.step-description {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0;
}

.step-content {
    max-width: 600px;
    margin: 0 auto;
}

/* Payment Summary */
.payment-summary {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.payment-summary h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.summary-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
}

.summary-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xs) 0;
    border-bottom: 1px solid var(--border-color);
}

.summary-item:last-child {
    border-bottom: none;
}

.summary-label {
    font-weight: 500;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.summary-value {
    font-weight: 600;
    color: var(--text-primary);
    font-family: 'Courier New', monospace;
    background: var(--bg-color);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    font-size: var(--font-size-sm);
}

/* QR Generation Area */
.qr-generation {
    text-align: center;
}

.qr-settings {
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* Wizard Navigation - centrované na všech zařízeních */
.wizard-navigation {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg) 0;
    border-top: 1px solid var(--border-color);
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.nav-spacer {
    display: none; /* Skrýt spacer protože centrujeme */
}

.wizard-navigation .btn {
    min-width: 120px;
}

/* Alert Messages */
.alert {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.alert-info {
    background: #dbeafe;
    border: 1px solid #3b82f6;
    color: #1e40af;
}

.alert-success {
    background: #dcfce7;
    border: 1px solid #16a34a;
    color: #15803d;
}

.alert-error {
    background: #fee2e2;
    border: 1px solid #ef4444;
    color: #dc2626;
}

.alert-warning {
    background: #fef3c7;
    border: 1px solid #f59e0b;
    color: #d97706;
}

/* Dark theme alerts */
[data-theme="dark"] .alert-info {
    background: #1e3a8a;
    border-color: #3b82f6;
    color: #93c5fd;
}

[data-theme="dark"] .alert-success {
    background: #14532d;
    border-color: #16a34a;
    color: #86efac;
}

[data-theme="dark"] .alert-error {
    background: #7f1d1d;
    border-color: #ef4444;
    color: #fca5a5;
}

[data-theme="dark"] .alert-warning {
    background: #78350f;
    border-color: #f59e0b;
    color: #fcd34d;
}

/* Input Section */
.input-section {
    background: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 6px var(--shadow-color);
}

.input-group {
    margin-bottom: var(--spacing-md);
}

.input-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.input-field {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-color);
    color: var(--text-primary);
    font-family: inherit;
    font-size: var(--font-size-base);
    resize: vertical;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.input-field:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(247, 102, 1, 0.1), var(--shadow-md);
    transform: translateY(-1px);
}

.input-field:hover:not(:focus) {
    border-color: var(--text-muted);
    box-shadow: var(--shadow-md);
}

.input-info {
    display: flex;
    justify-content: flex-end;
    margin-top: var(--spacing-xs);
}

.char-counter {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

/* Options Section */
.options-section {
    margin-bottom: var(--spacing-lg);
}

.options-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.option-group {
    margin-bottom: var(--spacing-md);
}

.option-label {
    display: block;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.option-select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-color);
    color: var(--text-primary);
    font-family: inherit;
    transition: border-color var(--transition-fast);
}

.option-select:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: var(--font-size-base);
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    min-height: 44px;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-primary-hover);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-primary:hover:not(:disabled)::before {
    opacity: 1;
}

.btn-primary > * {
    position: relative;
    z-index: 1;
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--border-color);
    transform: translateY(-1px);
}

.btn-success {
    background: var(--success-color);
    color: white;
    box-shadow: 0 2px 4px rgba(16, 185, 129, 0.2);
}

.btn-success:hover:not(:disabled) {
    background: #059669;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(16, 185, 129, 0.3);
}

.action-buttons {
    display: flex;
    gap: var(--spacing-md);
}

.action-buttons .btn {
    flex: 1;
}

/* Output Section */
.output-section {
    background: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 6px var(--shadow-color);
    text-align: center;
}

.qr-preview {
    background: var(--bg-color);
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    min-height: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: border-color var(--transition-normal);
}

.qr-preview.has-qr {
    border-style: solid;
    border-color: var(--primary-color);
    background: white;
}

.qr-placeholder {
    color: var(--text-muted);
    text-align: center;
}

.qr-placeholder i {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-md);
    display: block;
}

.qr-placeholder p {
    font-size: var(--font-size-lg);
}

.qr-code {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
}

.download-section {
    margin-top: var(--spacing-lg);
}

.download-info {
    margin-top: var(--spacing-sm);
    color: var(--text-muted);
}

/* Info Section */
.info-section {
    margin: var(--spacing-2xl) 0;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.info-card {
    background: var(--bg-secondary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.info-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px var(--shadow-hover);
}

.info-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    font-size: var(--font-size-xl);
    color: white;
}

.info-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.info-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-xl) 0;
    margin-top: auto;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: var(--spacing-lg);
}

/* Footer Brand */
.footer-brand {
    justify-self: start;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.footer-logo-img {
    width: 40px;
    height: auto;
    opacity: 0.9;
}

.footer-logo-text h3 {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    line-height: 1.2;
}

.footer-logo-text p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 2px 0 0 0;
    line-height: 1;
}

/* Footer Stats (Counter) */
.footer-stats {
    justify-self: center;
}

.stats-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--bg-primary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.stats-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-lg);
}

.stats-content {
    text-align: left;
}

.stats-number {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
    margin-bottom: 2px;
}

.stats-label {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    line-height: 1;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Footer Info */
.footer-info {
    justify-self: end;
    text-align: right;
}

.footer-links {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
}

.footer-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
}

.footer-link:hover {
    color: var(--primary-dark);
    background: rgba(247, 102, 1, 0.05);
    border-color: var(--primary-color);
}

.footer-copyright {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.footer-copyright a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-copyright a:hover {
    color: var(--primary-dark);
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.loading-overlay.show {
    opacity: 1;
    visibility: visible;
}

.loading-spinner {
    background: var(--bg-color);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.loading-spinner i {
    font-size: var(--font-size-2xl);
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.loading-spinner p {
    color: var(--text-secondary);
    font-weight: 500;
}

/* Compact Layout for 1000x1000px */
@media (max-width: 1100px) {
    :root {
        --spacing-xs: 0.2rem;
        --spacing-sm: 0.4rem;
        --spacing-md: 0.6rem;
        --spacing-lg: 1rem;
        --spacing-xl: 1.25rem;
        --spacing-2xl: 1.5rem;
        --font-size-xs: 0.7rem;
        --font-size-sm: 0.8rem;
        --font-size-base: 0.9rem;
        --font-size-lg: 1rem;
        --font-size-xl: 1.1rem;
        --font-size-2xl: 1.3rem;
    }

    .container {
        max-width: 980px;
        padding: 0 var(--spacing-xs);
    }

    .input-section,
    .output-section {
        padding: var(--spacing-md);
    }

    .input-group {
        margin-bottom: var(--spacing-sm);
    }

    .form-row {
        gap: var(--spacing-sm);
    }

    .qr-preview {
        min-height: 200px;
        padding: var(--spacing-sm);
        margin-bottom: var(--spacing-sm);
    }

    .hero {
        margin-bottom: var(--spacing-md);
    }

    .hero-title {
        font-size: var(--font-size-xl);
        margin-bottom: var(--spacing-xs);
    }

    .hero-subtitle {
        font-size: var(--font-size-sm);
    }

    .payment-details,
    .spayd-info {
        padding: var(--spacing-sm);
        margin-bottom: var(--spacing-sm);
    }

    .payment-row {
        padding: var(--spacing-xs) 0;
    }

    .section-title {
        font-size: var(--font-size-base);
        margin: var(--spacing-sm) 0 var(--spacing-xs) 0;
        padding-bottom: var(--spacing-xs);
    }

    .info-section {
        display: none; /* Hide info cards to save space */
    }

    .usage-section {
        margin-top: var(--spacing-md);
        padding: var(--spacing-md);
    }

    .footer {
        padding: var(--spacing-lg) 0;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
        text-align: center;
    }

    .footer-brand,
    .footer-stats,
    .footer-info {
        justify-self: center;
    }

    .footer-logo {
        justify-content: center;
    }

    .footer-links {
        justify-content: center;
    }

    .stats-item {
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .stats-icon {
        width: 32px;
        height: 32px;
        font-size: var(--font-size-base);
    }

    .stats-number {
        font-size: var(--font-size-lg);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    /* Normální layout - header zůstává */
    .container {
        padding: var(--spacing-sm);
        max-width: 100%;
    }

    /* Wizard container - vertikální stack na mobilu */
    .wizard-container {
        display: flex !important;
        flex-direction: column !important;
        width: 100% !important;
        gap: 0 !important;
        margin: 0 !important;
        padding: 0 !important;
    }

    /* Progressbar - horizontální nahoře, celá šířka */
    .wizard-sidebar {
        order: 1;
        width: 100% !important;
        flex-basis: auto !important;
        flex-shrink: 1 !important;
        margin-bottom: var(--spacing-sm);
        background: var(--bg-secondary);
        padding: var(--spacing-sm) var(--spacing-md);
        border-radius: var(--radius-md);
        border: 1px solid var(--border-color);
        box-sizing: border-box;
    }

    .wizard-progress-vertical {
        margin: 0;
        padding: 0;
        background: transparent;
        border: none;
    }

    /* Wizard pod progressbarem */
    .wizard {
        order: 2;
        width: 100%;
        max-width: 100%;
        margin: 0;
        padding: var(--spacing-md);
        background: white;
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-sm);
    }

    /* HORIZONTÁLNÍ progressbar - zleva doprava */
    .progress-steps-vertical {
        display: flex;
        flex-direction: row !important;
        justify-content: space-between;
        align-items: center;
        width: 100%;
        margin: 0;
        padding: 0;
        background: transparent;
        position: relative;
        overflow: visible;
    }

    /* Kroky v horizontální linii */
    .progress-steps-vertical .progress-step {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        position: relative;
        z-index: 2;
        margin: 0;
        padding: 0;
        width: auto;
    }

    /* Skrýt texty kroků na mobilu */
    .progress-steps-vertical .step-label {
        display: none;
    }

    /* Horizontální spojovací čára - zleva doprava */
    .progress-steps-vertical::before {
        content: '';
        position: absolute;
        top: 50%;
        left: 16px;
        right: 16px;
        height: 2px;
        background: var(--border-color);
        transform: translateY(-50%);
        z-index: 1;
    }

    /* Čísla kroků - pro mobilní horizontální layout */
    .progress-steps-vertical .step-circle {
        width: 32px;
        height: 32px;
        line-height: 32px;
        font-size: 12px;
        font-weight: 600;
        display: flex !important;
        align-items: center;
        justify-content: center;
        border-radius: 50%;
        background: var(--bg-color);
        border: 2px solid var(--border-color);
        color: var(--text-color);
        transition: all 0.3s ease;
        box-shadow: var(--shadow-sm);
    }

    /* Dokončené kroky */
    .progress-steps-vertical .progress-step.completed .step-circle {
        background: var(--primary-color);
        color: white;
        border-color: var(--primary-color);
    }

    /* Aktivní krok */
    .progress-steps-vertical .progress-step.active .step-circle {
        background: var(--primary-color);
        color: white;
        border-color: var(--primary-color);
        box-shadow: 0 0 0 2px rgba(247, 102, 1, 0.3);
    }

    /* HORIZONTÁLNÍ progresní čára - zleva doprava podle pokroku */
    .progress-steps-vertical::after {
        content: '';
        position: absolute;
        top: 50%;
        left: 16px;
        height: 3px;
        background: var(--primary-color);
        transform: translateY(-50%);
        z-index: 2;
        transition: width 0.3s ease;
        width: 0;
        border-radius: 2px;
    }

    /* Progresní šířka - zleva doprava podle aktuálního kroku */
    .progress-steps-vertical[data-step="1"]::after { width: 0; }
    .progress-steps-vertical[data-step="2"]::after { width: calc(20% - 16px); }
    .progress-steps-vertical[data-step="3"]::after { width: calc(40% - 16px); }
    .progress-steps-vertical[data-step="4"]::after { width: calc(60% - 16px); }
    .progress-steps-vertical[data-step="5"]::after { width: calc(80% - 16px); }
    .progress-steps-vertical[data-step="6"]::after { width: calc(100% - 32px); }

    /* Hover efekt jen pro dokončené kroky */
    .progress-steps-vertical .progress-step.completed:hover .step-circle {
        transform: scale(1.1);
        transition: transform 0.2s ease;
    }
    /* Normální layout - header zůstává */
    .container {
        padding: var(--spacing-sm);
        max-width: 100%;
    }

    /* Wizard container - vertikální stack na mobilu */
    .wizard-container {
        display: flex !important;
        flex-direction: column !important;
        width: 100% !important;
        gap: 0 !important;
        margin: 0 !important;
        padding: 0 !important;
    }

    /* Progressbar - horizontální nahoře, celá šířka */
    .wizard-sidebar {
        order: 1;
        width: 100% !important;
        flex-basis: auto !important;
        flex-shrink: 1 !important;
        margin-bottom: var(--spacing-sm);
        background: var(--bg-secondary);
        padding: var(--spacing-sm) var(--spacing-md);
        border-radius: var(--radius-md);
        border: 1px solid var(--border-color);
        box-sizing: border-box;
    }

    .wizard-progress-vertical {
        margin: 0;
        padding: 0;
        background: transparent;
    }

    /* Wizard pod progressbarem */
    .wizard {
        order: 2;
        width: 100%;
        max-width: 100%;
        margin: 0;
        padding: var(--spacing-md);
        background: white;
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-sm);
    }

    /* HORIZONTÁLNÍ progressbar - zleva doprava */
    .progress-steps-vertical {
        display: flex;
        flex-direction: row !important;
        justify-content: space-between;
        align-items: center;
        width: 100%;
        margin: 0;
        padding: 0;
        background: transparent;
        position: relative;
        overflow: visible;
    }

    /* Kroky v horizontální linii */
    .progress-steps-vertical .progress-step {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        position: relative;
        z-index: 2;
        margin: 0;
        padding: 0;
        width: auto;
    }

    /* Skrýt texty kroků na mobilu */
    .progress-steps-vertical .step-label {
        display: none;
    }

    /* Horizontální spojovací čára - zleva doprava */
    .progress-steps-vertical::before {
        content: '';
        position: absolute;
        top: 50%;
        left: 16px;
        right: 16px;
        height: 2px;
        background: var(--border-color);
        transform: translateY(-50%);
        z-index: 1;
    }

    /* Ikony kroků - pro mobilní horizontální layout */
    .progress-steps-vertical .step-circle {
        width: 32px;
        height: 32px;
        line-height: 32px;
        font-size: 12px;
        font-weight: 600;
        display: flex !important;
        align-items: center;
        justify-content: center;
        border-radius: 50%;
        background: var(--bg-color);
        border: 2px solid var(--border-color);
        color: var(--text-color);
        transition: all 0.3s ease;
        box-shadow: var(--shadow-sm);
    }

    /* Čísla kroků na mobilu */
    .progress-steps-vertical .step-circle .step-number {
        font-size: 12px !important;
        font-weight: 600 !important;
        display: inline-block !important;
        line-height: 1 !important;
        color: inherit !important;
    }

    /* Dokončené kroky */
    .progress-steps-vertical .progress-step.completed .step-circle {
        background: var(--primary-color);
        color: white;
        border-color: var(--primary-color);
    }

    /* Aktivní krok */
    .progress-steps-vertical .progress-step.active .step-circle {
        background: var(--primary-color);
        color: white;
        border-color: var(--primary-color);
        box-shadow: 0 0 0 2px rgba(247, 102, 1, 0.3);
    }

    /* HORIZONTÁLNÍ progresní čára - zleva doprava podle pokroku */
    .progress-steps-vertical::after {
        content: '';
        position: absolute;
        top: 50%;
        left: 16px;
        height: 3px;
        background: var(--primary-color);
        transform: translateY(-50%);
        z-index: 2;
        transition: width 0.3s ease;
        width: 0;
        border-radius: 2px;
    }

    /* Progresní šířka - zleva doprava podle aktuálního kroku */
    .progress-steps-vertical[data-step="1"]::after { width: 0; }
    .progress-steps-vertical[data-step="2"]::after { width: calc(20% - 16px); }
    .progress-steps-vertical[data-step="3"]::after { width: calc(40% - 16px); }
    .progress-steps-vertical[data-step="4"]::after { width: calc(60% - 16px); }
    .progress-steps-vertical[data-step="5"]::after { width: calc(80% - 16px); }
    .progress-steps-vertical[data-step="6"]::after { width: calc(100% - 32px); }

    /* Hover efekt jen pro dokončené kroky */
    .progress-steps-vertical .progress-step.completed:hover .step-circle {
        transform: scale(1.1);
        transition: transform 0.2s ease;
    }

    .header-title {
        font-size: var(--font-size-lg);
    }

    .wizard-content {
        min-height: 300px;
    }

    /* Wizard step styling na mobilu */
    .wizard-step {
        margin: 0;
        padding: var(--spacing-md);
        background: white;
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-sm);
    }

    /* Form elementy na mobilu */
    .form-group {
        margin-bottom: var(--spacing-md);
    }

    .form-control {
        width: 100%;
        padding: var(--spacing-md);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-sm);
        box-sizing: border-box;
    }

    /* Responsive form layout */
    .form-row {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    @media (min-width: 480px) {
        .form-row {
            flex-direction: row;
        }

        .form-row .form-group {
            flex: 1;
            margin-bottom: 0;
        }
    }

    .step-header {
        margin-bottom: var(--spacing-lg);
        padding-bottom: var(--spacing-md);
    }

    .step-title {
        font-size: var(--font-size-lg);
        flex-direction: column;
        gap: var(--spacing-xs);
    }

    .summary-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xs);
    }

    .summary-item {
        padding: var(--spacing-xs);
        border-bottom: 1px solid var(--border-color);
        border-radius: var(--radius-sm);
        background: var(--bg-color);
        margin-bottom: var(--spacing-xs);
    }

    .summary-value {
        font-size: var(--font-size-xs);
        padding: var(--spacing-xs);
    }

    .qr-settings {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .wizard-navigation {
        padding: var(--spacing-md) 0;
        gap: var(--spacing-sm);
        justify-content: center !important;
        flex-wrap: wrap;
    }

    .wizard-navigation .btn {
        min-width: 100px;
        font-size: var(--font-size-sm);
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .nav-spacer {
        display: none !important;
    }

    /* General mobile styles */
    :root {
        --spacing-md: 0.75rem;
        --spacing-lg: 1rem;
        --spacing-xl: 1.5rem;
        --spacing-2xl: 2rem;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

    .hero-title {
        font-size: var(--font-size-3xl);
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .hero-subtitle {
        font-size: var(--font-size-base);
    }

    .generator-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .input-section,
    .output-section {
        padding: var(--spacing-lg);
    }

    .action-buttons {
        flex-direction: column;
    }

    .info-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .footer-links {
        justify-content: center;
        gap: var(--spacing-md);
    }

    .footer-link {
        font-size: var(--font-size-sm);
    }

    .qr-preview {
        min-height: 250px;
        padding: var(--spacing-lg);
    }
}

@media (max-width: 480px) {
    /* Ještě menší ikony pro malé mobily */
    .step-icon {
        width: 0.8em;
        height: 0.8em;
        margin-right: 0.25em;
    }

    .btn-icon {
        width: 0.7em;
        height: 0.7em;
        margin-right: 0.25em;
    }

    .btn-icon-small {
        width: 0.6em;
        height: 0.6em;
    }

    .qr-placeholder-icon {
        width: 1.2em;
        height: 1.2em;
    }

    .loading-icon {
        width: 1.2em;
        height: 1.2em;
    }

    /* Vylepšené tmavé téma pro malé mobily */
    [data-theme="dark"] .wizard-step {
        background: var(--bg-secondary);
        border: 1px solid var(--border-color);
        margin-bottom: var(--spacing-md);
    }

    [data-theme="dark"] .step-header {
        border-bottom: 1px solid var(--border-color);
        padding-bottom: var(--spacing-md);
        margin-bottom: var(--spacing-md);
    }

    [data-theme="dark"] .payment-summary {
        background: var(--bg-tertiary);
        border: 1px solid var(--border-color);
    }

    [data-theme="dark"] .qr-preview {
        background: var(--bg-secondary);
        border: 1px solid var(--border-color);
    }

    [data-theme="dark"] .toggle-btn.active {
        background: var(--primary-color);
        color: white;
        border-color: var(--primary-color);
    }

    /* Zajistit tmavé pozadí i na malých mobilech */
    [data-theme="dark"] body {
        background: var(--bg-color) !important;
    }

    [data-theme="dark"] .main {
        background: var(--bg-color) !important;
    }

    [data-theme="dark"] .wizard,
    [data-theme="dark"] .wizard-container {
        background: var(--bg-color) !important;
    }

    .hero-title {
        font-size: var(--font-size-2xl);
    }

    .input-section,
    .output-section {
        padding: var(--spacing-md);
    }

    .qr-preview {
        min-height: 200px;
        padding: var(--spacing-md);
    }

    .info-card {
        padding: var(--spacing-lg);
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }

    .payment-row {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }

    .payment-value {
        width: 100%;
        text-align: left;
    }

    .usage-steps {
        grid-template-columns: 1fr;
    }

    .spayd-code {
        font-size: var(--font-size-xs);
        padding-right: var(--spacing-md);
    }

    .btn-copy {
        position: static;
        margin-top: var(--spacing-sm);
        width: 100%;
    }
}

/* Print Styles */
@media print {
    .header,
    .footer,
    .action-buttons,
    .download-section,
    .theme-toggle {
        display: none;
    }

    .main {
        padding: 0;
    }

    .generator-grid {
        grid-template-columns: 1fr;
    }

    .qr-preview {
        border: 1px solid #000;
        background: white !important;
    }
}

/* Payment Form Specific Styles */
.section-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin: var(--spacing-lg) 0 var(--spacing-md) 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--border-color);
}

/* Account Input Method Toggle */
.input-method-toggle {
    margin-bottom: var(--spacing-lg);
}

.toggle-buttons {
    display: flex;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    padding: var(--spacing-xs);
    gap: var(--spacing-xs);
}

.toggle-btn {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-family: inherit;
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
}

.toggle-btn:hover {
    color: var(--text-primary);
    background: var(--bg-color);
}

.toggle-btn.active {
    background: var(--primary-color);
    color: white;
    box-shadow: 0 2px 4px rgba(247, 102, 1, 0.2);
}

.toggle-btn.active:hover {
    background: var(--primary-dark);
    color: white;
}

.account-fields {
    transition: opacity var(--transition-normal), transform var(--transition-normal);
}

.account-fields.fade-out {
    opacity: 0;
    transform: translateY(-10px);
}

/* Enhanced Input Styles */
.input-field[type="date"] {
    color-scheme: light;
}

[data-theme="dark"] .input-field[type="date"] {
    color-scheme: dark;
}

/* Custom Select for Constant Symbol */
#constantSymbolCustom {
    animation: slideDown var(--transition-normal) ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
        max-height: 0;
    }
    to {
        opacity: 1;
        transform: translateY(0);
        max-height: 50px;
    }
}

.section-title:first-child {
    margin-top: 0;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.field-error {
    display: block;
    color: var(--error-color);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
    min-height: 1.2rem;
}

.input-field.error {
    border-color: var(--error-color);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.input-field.valid {
    border-color: var(--success-color);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

/* Payment Details Preview */
.payment-details {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.payment-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.payment-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.payment-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xs) 0;
    border-bottom: 1px solid var(--border-color);
}

.payment-row:last-child {
    border-bottom: none;
}

.payment-label {
    font-weight: 500;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.payment-value {
    font-weight: 500;
    color: var(--text-primary);
    font-family: 'Courier New', monospace;
    background: var(--bg-color);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

/* SPAYD Format Display */
.spayd-info {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.spayd-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.spayd-content {
    position: relative;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: var(--spacing-md);
}

.spayd-code {
    font-family: 'Courier New', monospace;
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    word-break: break-all;
    line-height: 1.4;
    display: block;
    margin: 0;
    padding-right: var(--spacing-xl);
}

.btn-copy {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    cursor: pointer;
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
}

.btn-copy:hover {
    background: var(--primary-dark);
    transform: scale(1.05);
}

.btn-copy.copied {
    background: var(--success-color);
}

/* Usage Instructions */
.usage-section {
    margin-top: var(--spacing-2xl);
    background: var(--bg-secondary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.usage-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-align: center;
    justify-content: center;
}

.usage-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.usage-step {
    background: var(--bg-color);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    text-align: center;
    position: relative;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.usage-step:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-hover);
}

.step-number {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--font-size-lg);
    margin: 0 auto var(--spacing-md);
}

.step-content h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.step-content p {
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Form Validation States */
.form-group.success .input-field {
    border-color: var(--success-color);
}

.form-group.error .input-field {
    border-color: var(--error-color);
}

.validation-message {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
}

.validation-message.success {
    color: var(--success-color);
}

.validation-message.error {
    color: var(--error-color);
}

/* Required Field Indicator */
.input-label[data-required="true"]::after {
    content: " *";
    color: var(--error-color);
    font-weight: bold;
}

/* Loading States */
.btn.loading {
    position: relative;
    color: transparent;
}

.btn.loading::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    color: white;
}

@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Success/Error Messages */
.alert {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.alert.success {
    background: var(--success-bg);
    color: var(--success-color);
    border: 1px solid var(--success-color);
}

.alert.error {
    background: var(--error-bg);
    color: var(--error-color);
    border: 1px solid var(--error-color);
}

.alert.warning {
    background: var(--warning-bg);
    color: var(--warning-color);
    border: 1px solid var(--warning-color);
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles for keyboard navigation */
.btn:focus,
.input-field:focus,
.option-select:focus,
.theme-toggle:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000000;
        --shadow-color: rgba(0, 0, 0, 0.5);
    }

    [data-theme="dark"] {
        --border-color: #ffffff;
        --text-secondary: #ffffff;
    }
}