/* ============================================
   БАЗОВЫЕ СТИЛИ И RESET
   ============================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --tg-theme-bg-color: #0f172a;
    --tg-theme-text-color: #f8fafc;
    --tg-theme-hint-color: #94a3b8;
    --tg-theme-link-color: #60a5fa;
    --tg-theme-button-color: #60a5fa;
    --tg-theme-button-text-color: #0b1120;
    --tg-theme-secondary-bg-color: #1e293b;

    /* Primary Palette */
    --primary: #60a5fa;
    --primary-dark: #3b82f6;
    --primary-light: #93c5fd;
    --success: #34d399;
    --success-light: #4ade80;
    --warning: #f59e0b;
    --error: #ef4444;

    --text-primary: #f8fafc;
    --text-secondary: #cbd5f5;
    --text-muted: #94a3b8;

    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --border-color: #475569;
    --border-color-light: #64748b;

    /* Gradients & Shadows */
    --primary-gradient: linear-gradient(135deg, #60a5fa 0%, #3b82f6 100%);
    --primary-gradient-hover: linear-gradient(135deg, #3b82f6 0%, #60a5fa 100%);
    --success-gradient: linear-gradient(135deg, #34d399 0%, #059669 100%);
    --accent-gradient: linear-gradient(135deg, rgba(96, 165, 250, 0.18) 0%, rgba(59, 130, 246, 0.18) 100%);

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.6), 0 2px 4px -1px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.7), 0 4px 6px -2px rgba(0, 0, 0, 0.6);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.8), 0 10px 10px -5px rgba(0, 0, 0, 0.7);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.9);
    --shadow-primary: 0 10px 25px -5px rgba(96, 165, 250, 0.4), 0 4px 6px -2px rgba(96, 165, 250, 0.3);
    --shadow-primary-hover: 0 15px 35px -5px rgba(96, 165, 250, 0.5), 0 6px 10px -2px rgba(96, 165, 250, 0.4);

    /* Card Styles */
    --card-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.5), 0 1px 2px 0 rgba(0, 0, 0, 0.4);
    --card-shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.7), 0 4px 6px -2px rgba(0, 0, 0, 0.6);
    --input-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
    --input-shadow-focus: 0 0 0 3px rgba(96, 165, 250, 0.3), 0 1px 2px 0 rgba(0, 0, 0, 0.5);

    /* Border Radius */
    --radius-sm: 8px;
    --radius: 12px;
    --radius-md: 16px;
    --radius-lg: 20px;
    --radius-xl: 24px;

    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 40px;

    /* Transitions */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Mode Variables - PREMIUM */
[data-theme="dark"],
html[data-theme="dark"],
body[data-theme="dark"],
body.dark-theme-active {
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --text-muted: #9ca3af;
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --border-color: #475569;
    --border-color-light: #64748b;
    
    --primary: #60a5fa;
    --primary-dark: #3b82f6;
    --primary-light: #93c5fd;
    
    --primary-gradient: linear-gradient(135deg, #60a5fa 0%, #3b82f6 100%);
    --primary-gradient-hover: linear-gradient(135deg, #3b82f6 0%, #60a5fa 100%);
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.6), 0 2px 4px -1px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.7), 0 4px 6px -2px rgba(0, 0, 0, 0.6);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.8), 0 10px 10px -5px rgba(0, 0, 0, 0.7);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.9);
    --shadow-primary: 0 10px 25px -5px rgba(96, 165, 250, 0.4), 0 4px 6px -2px rgba(96, 165, 250, 0.3);
    --shadow-primary-hover: 0 15px 35px -5px rgba(96, 165, 250, 0.5), 0 6px 10px -2px rgba(96, 165, 250, 0.4);
    
    --input-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
    --input-shadow-focus: 0 0 0 3px rgba(96, 165, 250, 0.3), 0 1px 2px 0 rgba(0, 0, 0, 0.5);
    
    --accent-gradient: linear-gradient(135deg, rgba(96, 165, 250, 0.2) 0%, rgba(59, 130, 246, 0.2) 100%);
    
    /* Card shadows for dark mode */
    --card-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.5), 0 1px 2px 0 rgba(0, 0, 0, 0.4);
    --card-shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.7), 0 4px 6px -2px rgba(0, 0, 0, 0.6);
}

[data-theme="dark"] .payment-container,
body[data-theme="dark"] .payment-container,
body.dark-theme-active .payment-container {
    background: var(--bg-primary);
    border-color: var(--border-color);
    box-shadow: 
        0 20px 60px rgba(0, 0, 0, 0.5),
        0 0 0 1px var(--border-color),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

[data-theme="dark"] .payment-container:hover {
    box-shadow: 
        0 25px 70px rgba(0, 0, 0, 0.6),
        0 0 0 1px rgba(96, 165, 250, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] .payment-header-section,
body[data-theme="dark"] .payment-header-section,
body.dark-theme-active .payment-header-section {
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    border-bottom-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .payment-amount-section,
body[data-theme="dark"] .payment-amount-section,
body.dark-theme-active .payment-amount-section {
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    border-bottom-color: var(--border-color);
    color: var(--text-primary);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background: linear-gradient(135deg, #0b1120 0%, #0f172a 45%, #1e293b 100%) !important;
    min-height: 100vh;
    padding: var(--spacing-md);
    position: relative;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-feature-settings: "liga" 1, "kern" 1;
    transition: background-color var(--transition-base), color var(--transition-base);
    /* Обеспечиваем видимость страницы на мобильных */
    visibility: visible !important;
    opacity: 1 !important;
    display: block !important;
}

[data-theme="dark"] body,
body[data-theme="dark"],
body.dark-theme-active {
    background: linear-gradient(135deg, #0a0f1a 0%, #0f172a 50%, #1e293b 100%) !important;
    color: var(--text-primary) !important;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 20% 30%, rgba(96, 165, 250, 0.18) 0%, rgba(15, 23, 42, 0) 55%),
        radial-gradient(circle at 80% 70%, rgba(59, 130, 246, 0.12) 0%, rgba(15, 23, 42, 0) 55%);
    pointer-events: none;
    z-index: 0;
    animation: backgroundPulse 18s ease infinite;
}

@keyframes backgroundPulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.1); }
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.container {
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
    position: relative;
    z-index: 1;
}

.section-heading {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Navigation Tabs - УДАЛЕНО, так как вкладки больше не нужны */

.nav-tab {
    flex: 1;
    padding: 12px 20px;
    border: none;
    border-radius: 12px;
    background: transparent;
    color: var(--tg-theme-text-color, #000);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.nav-tab.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.nav-tab:hover:not(.active) {
    background: rgba(102, 126, 234, 0.1);
}

.tab-icon {
    font-size: 18px;
}

.tab-text {
    font-weight: 600;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Unified Payment Container - PREMIUM PROFESSIONAL DESIGN */
.payment-container {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: 
        0 20px 60px rgba(0, 0, 0, 0.08),
        0 0 0 1px var(--border-color),
        inset 0 1px 0 rgba(255, 255, 255, 0.9);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
    margin-bottom: var(--spacing-lg);
    transition: transform var(--transition-base), 
                box-shadow var(--transition-base);
}

.payment-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
    z-index: 1;
}

.payment-container:hover {
    transform: translateY(-4px);
    box-shadow: 
        0 25px 70px rgba(0, 0, 0, 0.12),
        0 0 0 1px rgba(37, 99, 235, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.payment-container::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
    z-index: 1;
}

/* Header Section */
.payment-header-section {
    text-align: center;
    padding: var(--spacing-2xl) var(--spacing-lg) var(--spacing-lg);
    position: relative;
    z-index: 1;
    border-bottom: 1px solid var(--border-color-light);
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    margin-top: var(--spacing-md);
}

/* Trust Badges - единый стиль для всех бейджей */
.trust-badge,
.security-feature {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.08) 0%, rgba(30, 64, 175, 0.08) 100%);
    border: 1px solid rgba(37, 99, 235, 0.15);
    border-radius: var(--radius-sm);
    font-size: 11px;
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.4px;
    transition: all var(--transition-base);
}

.trust-badge:hover,
.security-feature:hover {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.12) 0%, rgba(30, 64, 175, 0.12) 100%);
    border-color: rgba(37, 99, 235, 0.25);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.trust-icon,
.security-icon {
    width: 12px;
    height: 12px;
    color: var(--primary);
    stroke-width: 2.5;
}

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

/* SVG Icons Styling */
.icon {
    width: 24px;
    height: 24px;
    display: inline-block;
    vertical-align: middle;
    stroke: currentColor;
    fill: none;
}

.icon-large {
    width: 48px;
    height: 48px;
}

.icon-xl {
    width: 72px;
    height: 72px;
}

.header-icon-wrapper {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
    z-index: 1;
}

.header-icon {
    width: 72px;
    height: 72px;
    color: var(--primary);
    stroke-width: 2.5;
    filter: drop-shadow(0 6px 12px rgba(37, 99, 235, 0.25));
    transition: transform var(--transition-base);
}

.header-icon-wrapper:hover .header-icon {
    transform: scale(1.08) rotate(5deg);
    color: var(--primary-dark);
}

.header-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120px;
    height: 120px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    animation: pulse 3s ease-in-out infinite;
    filter: blur(20px);
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; transform: translate(-50%, -50%) scale(1); }
    50% { opacity: 0.8; transform: translate(-50%, -50%) scale(1.1); }
}

.payment-header-section h1 {
    font-size: 36px;
    font-weight: 900;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    position: relative;
    z-index: 1;
    letter-spacing: -0.8px;
    line-height: 1.2;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.payment-header-section .subtitle {
    font-size: 16px;
    color: var(--text-secondary);
    font-weight: 500;
    margin: 0;
    letter-spacing: 0.2px;
    line-height: 1.5;
}

/* Amount Summary Section */
.payment-amount-section {
    padding: var(--spacing-2xl) var(--spacing-lg);
    position: relative;
    z-index: 1;
    border-bottom: 1px solid var(--border-color-light);
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    transition: background var(--transition-base);
}

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

/* Балансировка: добавляем невидимый блок справа размера иконки,
   чтобы текст был идеально по центру между левым значком и пустым местом */
.amount-display::after {
    content: '';
    display: block;
    width: 72px; /* как .amount-icon-wrapper */
    height: 72px;
}

.amount-icon-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 72px;
    height: 72px;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.12) 0%, rgba(30, 64, 175, 0.12) 100%);
    border-radius: var(--radius-lg);
    border: 2px solid rgba(37, 99, 235, 0.15);
    flex-shrink: 0;
    transition: all var(--transition-base);
    box-shadow: 
        0 4px 12px rgba(37, 99, 235, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.amount-icon {
    width: 36px;
    height: 36px;
    color: var(--primary);
    stroke-width: 2.5;
}

.amount-display:hover .amount-icon-wrapper {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.18) 0%, rgba(30, 64, 175, 0.18) 100%);
    border-color: rgba(37, 99, 235, 0.25);
    transform: scale(1.08);
    box-shadow: 
        0 6px 16px rgba(37, 99, 235, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.amount-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    flex: 1;
    gap: var(--spacing-xs);
}

.amount-label {
    display: block;
    font-size: 11px;
    color: var(--tg-theme-hint-color, #999);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    opacity: 0.8;
}

.amount-value {
    display: block;
    font-size: 44px;
    font-weight: 900;
    color: var(--text-primary);
    letter-spacing: -2px;
    line-height: 1;
    margin: var(--spacing-xs) 0;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.amount-hint {
    display: block;
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 500;
    margin-top: var(--spacing-xs);
    letter-spacing: 0.3px;
}

/* Security Features */
.security-features {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color-light);
    flex-wrap: wrap;
}

/* Payment Form Section */
.payment-form-section {
    padding: var(--spacing-2xl) var(--spacing-lg);
    position: relative;
    z-index: 1;
}

.form-section {
    margin-bottom: 32px;
}

.form-section:last-child {
    margin-bottom: 0;
}

.form-section-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    font-size: 14px;
    font-weight: 700;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    position: relative;
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border-color-light);
}

.form-section-title::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 48px;
    height: 2px;
    background: var(--primary-gradient);
    border-radius: 2px;
}

.section-icon {
    width: 22px;
    height: 22px;
    color: var(--primary);
    stroke-width: 2.5;
    transition: transform var(--transition-base);
}

.form-section-title:hover .section-icon {
    transform: scale(1.15) rotate(5deg);
    color: var(--primary-dark);
}

.form-group {
    margin-bottom: 20px;
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 16px 20px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    background: var(--bg-primary);
    font-size: 15px;
    font-family: 'Inter', sans-serif;
    font-weight: 500;
    color: var(--text-primary);
    transition: all var(--transition-base);
    box-shadow: var(--input-shadow);
    position: relative;
}

.form-group input::placeholder,
.form-group select::placeholder {
    color: var(--text-muted);
    opacity: 0.7;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 
        0 0 0 4px rgba(37, 99, 235, 0.1),
        0 4px 12px rgba(37, 99, 235, 0.08),
        var(--input-shadow);
    background: var(--bg-primary);
    transform: translateY(-1px);
}

.form-group input:hover:not(:focus),
.form-group select:hover:not(:focus) {
    border-color: var(--border-color);
    background: var(--bg-secondary);
}

.form-group input:read-only {
    background: var(--bg-tertiary);
    cursor: not-allowed;
    color: var(--text-secondary);
}

.form-group small {
    display: block;
    margin-top: 6px;
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 400;
}

/* Buttons */
.btn {
    width: 100%;
    padding: 16px 24px;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    font-family: 'Inter', sans-serif;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 24px;
}

.btn-primary {
    background: var(--primary-gradient);
    color: #ffffff;
    box-shadow: 
        0 10px 25px rgba(37, 99, 235, 0.3),
        0 4px 6px rgba(37, 99, 235, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
    font-weight: 700;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    font-size: 15px;
    position: relative;
    overflow: hidden;
    border: none;
    transition: all var(--transition-base);
    padding: 18px 36px;
    border-radius: var(--radius);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 
        0 15px 35px rgba(37, 99, 235, 0.4),
        0 6px 10px rgba(37, 99, 235, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.25);
    background: var(--primary-gradient-hover);
}

.btn-primary:active {
    transform: translateY(-1px);
    box-shadow: 
        0 8px 20px rgba(37, 99, 235, 0.3),
        0 3px 5px rgba(37, 99, 235, 0.2);
}

.btn-primary .btn-icon {
    width: 20px;
    height: 20px;
    stroke: currentColor;
    stroke-width: 2.5;
    fill: none;
}

/* Payment CTA Section */
.payment-cta {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color-light);
}

.payment-guarantee {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-md);
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 500;
    text-align: center;
}

.guarantee-icon {
    width: 14px;
    height: 14px;
    color: var(--success);
    stroke-width: 2.5;
    flex-shrink: 0;
}


.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1.5px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--bg-secondary);
    border-color: var(--border-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-icon {
    font-size: 20px;
}

/* Spinner */
.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid rgba(37, 99, 235, 0.1);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-lg);
}

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

.loading-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin: 20px 0;
}

.loading-dots span {
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
    animation: bounce 1.4s ease-in-out infinite;
}

.loading-dots span:nth-child(1) { animation-delay: -0.32s; }
.loading-dots span:nth-child(2) { animation-delay: -0.16s; }

@keyframes bounce {
    0%, 80%, 100% { transform: scale(0); }
    40% { transform: scale(1); }
}

/* ============================================
   ДОПОЛНИТЕЛЬНЫЕ СТИЛИ
   ============================================ */

/* Wallet Address Wrapper */
.wallet-address-wrapper {
    display: flex;
    gap: 8px;
    align-items: stretch;
}

.wallet-address-wrapper input {
    flex: 1;
}

.btn-icon-btn {
    padding: 12px 14px;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius);
    background: var(--bg-primary);
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 48px;
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.btn-icon-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--accent-gradient);
    opacity: 0;
    transition: opacity var(--transition-base);
    z-index: 0;
}

.btn-icon-btn:hover::before {
    opacity: 1;
}

.btn-icon-btn:hover {
    border-color: var(--primary);
    background: var(--bg-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-icon-btn:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.btn-icon-btn .icon {
    position: relative;
    z-index: 1;
    color: var(--text-secondary);
    transition: color var(--transition-fast), transform var(--transition-fast);
}

.btn-icon-btn:hover .icon {
    color: var(--primary);
    transform: scale(1.1);
}

/* QR Code Container */
.qr-code-container {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-xl);
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.qr-code-container canvas {
    margin: 0 auto var(--spacing-lg);
    border-radius: var(--radius);
    padding: var(--spacing-lg);
    background: var(--bg-primary);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color-light);
}

/* Progress Bar */
.progress-container {
    margin: var(--spacing-lg) 0;
    padding: var(--spacing-lg);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color-light);
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: var(--spacing-sm);
}

.progress-fill {
    height: 100%;
    background: var(--primary-gradient);
    border-radius: 4px;
    transition: width var(--transition-base);
    width: 0%;
}

.progress-text {
    text-align: center;
    font-size: 14px;
    color: var(--text-primary);
    font-weight: 500;
    margin: 0;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 10000;
}

.loading-content {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    text-align: center;
    box-shadow: var(--shadow-xl);
    max-width: 320px;
    width: 90%;
    border: 1px solid var(--border-color);
}

.loading-content p {
    margin-top: var(--spacing-lg);
    font-size: 15px;
    color: var(--text-primary);
    font-weight: 500;
}

/* Modal Overlay */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    padding: var(--spacing-lg);
    /* Обеспечиваем видимость на мобильных */
    visibility: visible !important;
    opacity: 1 !important;
}

.modal-overlay[style*="display: flex"],
.modal-overlay[style*="display:flex"] {
    display: flex !important;
}

.modal-content {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border-color);
    animation: modalSlideIn 0.3s ease;
    /* Обеспечиваем видимость на мобильных */
    visibility: visible !important;
    opacity: 1 !important;
    display: block !important;
    position: relative;
    margin: auto;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.result-content {
    text-align: center;
    margin-bottom: 24px;
}

.result-content.success {
    color: var(--success);
}

.result-content.error {
    color: var(--error);
}

.result-content.info {
    color: var(--text-primary);
    border-left: 4px solid var(--primary);
    padding-left: 20px;
}

.success-icon,
.error-icon {
    font-size: 64px;
    margin-bottom: 16px;
    animation: scaleIn 0.3s ease;
}

@keyframes scaleIn {
    from { transform: scale(0); }
    to { transform: scale(1); }
}

.result-content h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 20px;
}

.result-details {
    text-align: left;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
    border: 1px solid var(--border-color-light);
}

.result-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

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

.result-label {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

.result-value {
    font-size: 14px;
    color: var(--text-primary);
    font-weight: 600;
    text-align: right;
    word-break: break-all;
}

.result-value.wallet-address {
    font-family: 'Courier New', monospace;
    font-size: 12px;
    max-width: 200px;
}

.result-message {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius);
    border: 1px solid var(--border-color-light);
}

/* ============================================
   UX/UI УЛУЧШЕНИЯ
   ============================================ */

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: 10001;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    pointer-events: none;
}

.toast {
    background: var(--bg-primary);
    border-radius: var(--radius);
    padding: var(--spacing-md) var(--spacing-lg);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    min-width: 280px;
    max-width: 400px;
    pointer-events: auto;
    animation: toastSlideIn 0.3s ease-out;
    position: relative;
    overflow: hidden;
}

.toast::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: currentColor;
}

.toast.success {
    color: var(--success);
}

.toast.error {
    color: var(--error);
}

.toast.info {
    color: var(--primary);
}

.toast.warning {
    color: var(--warning);
}

.toast-icon {
    width: 20px;
    height: 20px;
    stroke-width: 2.5;
    flex-shrink: 0;
}

.toast-message {
    flex: 1;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.toast-close {
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    transition: color var(--transition-fast);
    margin-left: auto;
}

.toast-close:hover {
    color: var(--text-primary);
}

.toast-close svg {
    width: 16px;
    height: 16px;
}

@keyframes toastSlideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.toast.fade-out {
    animation: toastSlideOut 0.3s ease-out forwards;
}

@keyframes toastSlideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

/* Input Validation States */
.input-wrapper {
    position: relative;
}

.input-status {
    position: absolute;
    right: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    display: none;
    align-items: center;
    justify-content: center;
    pointer-events: none;
}

.input-status.valid {
    display: flex;
    color: var(--success);
}

.input-status.invalid {
    display: flex;
    color: var(--error);
}

.input-status svg {
    width: 20px;
    height: 20px;
    stroke-width: 2.5;
}

.form-group input.valid {
    border-color: var(--success);
    padding-right: calc(var(--spacing-lg) + 24px);
}

.form-group input.invalid {
    border-color: var(--error);
    padding-right: calc(var(--spacing-lg) + 24px);
}

.form-group small.error {
    color: var(--error);
    font-weight: 500;
}

.form-group small.success {
    color: var(--success);
    font-weight: 500;
}

/* Skeleton Loading */
.select-wrapper {
    position: relative;
}

.select-loading {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-primary);
    border-radius: var(--radius);
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    border: 2px solid var(--border-color);
    pointer-events: none;
}

.skeleton-loader {
    height: 20px;
    background: linear-gradient(90deg, 
        var(--bg-tertiary) 0%, 
        var(--bg-secondary) 50%, 
        var(--bg-tertiary) 100%);
    background-size: 200% 100%;
    border-radius: var(--radius-sm);
    animation: skeletonPulse 1.5s ease-in-out infinite;
}

.skeleton-loader:nth-child(1) {
    width: 60%;
}

.skeleton-loader:nth-child(2) {
    width: 80%;
}

.skeleton-loader:nth-child(3) {
    width: 70%;
}

@keyframes skeletonPulse {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* Copy Button Animation */
.btn-icon-btn.copied {
    background: var(--success-gradient);
    border-color: var(--success);
    color: #ffffff;
    animation: copySuccess 0.6s ease-out;
}

.btn-icon-btn.copied .icon {
    color: #ffffff;
}

@keyframes copySuccess {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
    100% {
        transform: scale(1);
    }
}

/* QR Code Animation */
.qr-code-container {
    animation: qrSlideDown 0.3s ease-out;
}

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

/* Success Animation */
.success-checkmark {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
}

.success-checkmark svg {
    width: 100%;
    height: 100%;
    stroke: var(--success);
    stroke-width: 3;
    fill: none;
    stroke-dasharray: 200;
    stroke-dashoffset: 200;
    animation: checkmarkDraw 0.6s ease-out forwards;
}

@keyframes checkmarkDraw {
    to {
        stroke-dashoffset: 0;
    }
}

/* Confetti Animation */
.confetti {
    position: fixed;
    width: 10px;
    height: 10px;
    background: var(--primary);
    top: 0;
    left: 50%;
    z-index: 10002;
    pointer-events: none;
    animation: confettiFall 3s ease-out forwards;
}

@keyframes confettiFall {
    to {
        transform: translateY(100vh) rotate(360deg);
        opacity: 0;
    }
}

/* Smooth Transitions */
.form-section {
    animation: fadeInUp 0.4s ease-out;
    animation-fill-mode: both;
}

.form-section:nth-child(1) { animation-delay: 0.1s; }
.form-section:nth-child(2) { animation-delay: 0.2s; }
.form-section:nth-child(3) { animation-delay: 0.3s; }
.form-section:nth-child(4) { animation-delay: 0.4s; }

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

/* Provider Logos */
.provider-logos {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius);
    border: 1px solid var(--border-color-light);
}

.provider-logo-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-primary);
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.provider-logo-item:hover {
    border-color: var(--primary);
    background: var(--bg-secondary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.provider-logo-item.active {
    border-color: var(--primary);
    background: var(--accent-gradient);
    box-shadow: var(--shadow-sm);
}

.provider-logo-icon {
    width: 20px;
    height: 20px;
    border-radius: 4px;
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: 700;
    color: var(--text-primary);
    flex-shrink: 0;
}

.provider-logo-item:hover .provider-logo-icon {
    background: var(--primary);
    color: #ffffff;
}

/* Responsive Design - Mobile First */
@media (max-width: 768px) {
    body {
        padding: 12px;
    }

    .container {
        padding: 0;
        max-width: 100%;
    }

    .payment-container {
        border-radius: 24px;
        margin-bottom: 16px;
    }

    .payment-header-section {
        padding: 24px 20px 20px;
    }

    .payment-header-section .header-icon {
        font-size: 56px;
    }

    .payment-header-section h1 {
        font-size: 24px;
    }

    .payment-header-section .subtitle {
        font-size: 13px;
    }

    .payment-amount-section {
        padding: 20px;
    }

    .amount-display {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }

    .amount-display::after {
        display: none;
    }

    .amount-icon {
        font-size: 40px;
    }

    .amount-content {
        align-items: center;
    }

    .amount-label {
        font-size: 11px;
    }

    .amount-value {
        font-size: 28px;
    }

    .amount-secure {
        font-size: 11px;
    }

    .payment-form-section {
        padding: 24px 20px;
    }

    .form-section {
        margin-bottom: 24px;
    }

    .form-section-title {
        font-size: 13px;
        margin-bottom: 16px;
    }

    .form-group {
        margin-bottom: 16px;
    }

    .form-group input,
    .form-group select {
        padding: 14px 16px;
        font-size: 15px;
    }
    .provider-logos {
        padding: var(--spacing-sm);
        gap: var(--spacing-xs);
    }
    
    .provider-logo-item {
        padding: 6px 10px;
        font-size: 11px;
    }

    .form-group label {
        font-size: 13px;
        margin-bottom: 6px;
    }

    .form-group small {
        font-size: 11px;
    }

    .btn {
        padding: 14px 20px;
        font-size: 15px;
        margin-top: 20px;
    }

    .wallet-address-wrapper {
        gap: 6px;
    }

    .btn-icon-btn {
        padding: 10px 12px;
        min-width: 44px;
        font-size: 16px;
    }

    .qr-code-container {
        padding: 20px;
        margin-top: 16px;
    }

    .progress-container {
        padding: 16px;
        margin: 20px 0;
    }
    
    /* Модальное окно на мобильных */
    .modal-overlay {
        padding: var(--spacing-md);
    }
    
    .modal-content {
        padding: var(--spacing-lg);
        max-width: 100%;
        max-height: 95vh;
    }
    
    .result-content h3 {
        font-size: 20px;
    }
    
    /* Кнопка в модальном окне на мобильных */
    #openPaymentLinkBtn {
        width: 100% !important;
        padding: 16px 24px !important;
        font-size: 16px !important;
        font-weight: 600 !important;
        -webkit-tap-highlight-color: transparent;
        touch-action: manipulation;
    }
}

@media (max-width: 480px) {
    body {
        padding: 8px;
    }

    .payment-container {
        border-radius: 20px;
    }

    .payment-header-section {
        padding: 20px 16px 16px;
    }

    .payment-header-section .header-icon {
        font-size: 48px;
    }

    .payment-header-section h1 {
        font-size: 22px;
    }

    .payment-amount-section {
        padding: 16px;
    }

    .amount-value {
        font-size: 24px;
    }

    .payment-form-section {
        padding: 20px 16px;
    }

    .form-section {
        margin-bottom: 20px;
    }

    .form-group input,
    .form-group select {
        padding: 12px 14px;
        font-size: 14px;
    }

    .btn {
        padding: 12px 18px;
        font-size: 14px;
    }
}

/* Touch-friendly improvements */
@media (hover: none) and (pointer: coarse) {
    .btn,
    .btn-icon-btn,
    .form-group input,
    .form-group select {
        min-height: 44px;
        touch-action: manipulation;
    }
}

/* Safe area for iOS notch */
@supports (padding: max(0px)) {
    body {
        padding-left: max(12px, env(safe-area-inset-left));
        padding-right: max(12px, env(safe-area-inset-right));
        padding-bottom: max(12px, env(safe-area-inset-bottom));
    }
}