/* ================================================
   quyinvis Temp Mail - Premium Design System
   ================================================ */

/* CSS Variables */
:root {
    /* Colors - Light Mode */
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f5f9;
    --bg-card: rgba(255, 255, 255, 0.8);
    --bg-card-hover: rgba(255, 255, 255, 0.95);

    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --text-inverse: #ffffff;

    --border-color: rgba(15, 23, 42, 0.08);
    --border-hover: rgba(15, 23, 42, 0.15);

    /* Brand Colors */
    --primary: #6366f1;
    --primary-light: #818cf8;
    --primary-dark: #4f46e5;
    --primary-glow: rgba(99, 102, 241, 0.4);

    --secondary: #8b5cf6;
    --accent: #a855f7;

    --success: #10b981;
    --success-light: #34d399;
    --warning: #f59e0b;
    --warning-light: #fbbf24;
    --danger: #ef4444;
    --danger-light: #f87171;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #ec4899 100%);
    --gradient-secondary: linear-gradient(135deg, #0ea5e9 0%, #6366f1 100%);
    --gradient-dark: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    --gradient-glow: radial-gradient(circle at center, var(--primary-glow) 0%, transparent 70%);

    /* Shadows */
    --shadow-sm: 0 1px 2px 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);
    --shadow-glow: 0 0 40px var(--primary-glow);
    --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.06);

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.4s ease;
    --transition-bounce: 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);

    /* Z-Index */
    --z-dropdown: 100;
    --z-modal: 1000;
    --z-toast: 1100;
}

/* Dark Mode */
[data-theme="dark"] {
    --bg-primary: #0a0a0f;
    --bg-secondary: #111118;
    --bg-tertiary: #1a1a24;
    --bg-card: rgba(26, 26, 36, 0.8);
    --bg-card-hover: rgba(36, 36, 50, 0.9);

    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #64748b;
    --text-inverse: #0f172a;

    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.15);

    --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4);
}

/* ================================================
   Reset & Base Styles
   ================================================ */

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input {
    font-family: inherit;
    border: none;
    outline: none;
    background: none;
}

/* ================================================
   Animated Background
   ================================================ */

.animated-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.bg-gradient {
    position: absolute;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
}

.bg-gradient::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background:
        radial-gradient(circle at 20% 20%, rgba(99, 102, 241, 0.15) 0%, transparent 40%),
        radial-gradient(circle at 80% 80%, rgba(168, 85, 247, 0.12) 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(236, 72, 153, 0.08) 0%, transparent 50%);
    animation: gradientFloat 20s ease-in-out infinite;
}

[data-theme="dark"] .bg-gradient::before {
    background:
        radial-gradient(circle at 20% 20%, rgba(99, 102, 241, 0.2) 0%, transparent 40%),
        radial-gradient(circle at 80% 80%, rgba(168, 85, 247, 0.15) 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(236, 72, 153, 0.1) 0%, transparent 50%);
}

.bg-grid {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(var(--border-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--border-color) 1px, transparent 1px);
    background-size: 60px 60px;
    opacity: 0.5;
}

.floating-shapes {
    position: absolute;
    width: 100%;
    height: 100%;
}

.shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.6;
    animation: float 15s ease-in-out infinite;
}

.shape-1 {
    width: 400px;
    height: 400px;
    background: var(--primary);
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.shape-2 {
    width: 300px;
    height: 300px;
    background: var(--secondary);
    top: 60%;
    right: 10%;
    animation-delay: -5s;
}

.shape-3 {
    width: 250px;
    height: 250px;
    background: var(--accent);
    bottom: 10%;
    left: 30%;
    animation-delay: -10s;
}

.shape-4 {
    width: 200px;
    height: 200px;
    background: var(--success);
    top: 30%;
    right: 20%;
    animation-delay: -7s;
}

.shape-5 {
    width: 150px;
    height: 150px;
    background: var(--warning);
    bottom: 30%;
    right: 30%;
    animation-delay: -12s;
}

@keyframes gradientFloat {

    0%,
    100% {
        transform: translate(0, 0) rotate(0deg);
    }

    33% {
        transform: translate(2%, 2%) rotate(5deg);
    }

    66% {
        transform: translate(-2%, 1%) rotate(-5deg);
    }
}

@keyframes float {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }

    33% {
        transform: translate(30px, -30px) scale(1.05);
    }

    66% {
        transform: translate(-20px, 20px) scale(0.95);
    }
}

/* ================================================
   Navigation
   ================================================ */

.navbar {
    position: sticky;
    top: 0;
    z-index: var(--z-dropdown);
    padding: var(--spacing-md) var(--spacing-xl);
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
}

[data-theme="dark"] .navbar {
    background: rgba(10, 10, 15, 0.8);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.logo-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    color: white;
    box-shadow: var(--shadow-glow);
}

.logo-icon svg {
    width: 22px;
    height: 22px;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-badge {
    font-size: 0.65rem;
    font-weight: 700;
    padding: 2px 8px;
    background: var(--bg-tertiary);
    color: var(--text-muted);
    border-radius: var(--radius-full);
    letter-spacing: 0.5px;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.9rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav-link:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.nav-link svg {
    width: 18px;
    height: 18px;
}

.theme-toggle,
.sound-toggle {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.theme-toggle:hover,
.sound-toggle:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.theme-toggle svg,
.sound-toggle svg {
    width: 20px;
    height: 20px;
}

.moon-icon,
.sound-off {
    display: none;
}

[data-theme="dark"] .sun-icon {
    display: none;
}

[data-theme="dark"] .moon-icon {
    display: block;
}

.sound-toggle.muted .sound-on {
    display: none;
}

.sound-toggle.muted .sound-off {
    display: block;
}

/* ================================================
   Buttons
   ================================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    white-space: nowrap;
}

.btn svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.85rem;
}

.btn-sm svg {
    width: 16px;
    height: 16px;
}

.btn-full {
    width: 100%;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md), 0 0 20px var(--primary-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), 0 0 30px var(--primary-glow);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-glow {
    position: relative;
    overflow: hidden;
}

.btn-glow::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

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

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
}

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

.btn-ghost {
    color: var(--text-secondary);
    background: transparent;
}

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

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-danger:hover {
    background: var(--danger-light);
    transform: translateY(-2px);
}

/* ================================================
   Hero Section
   ================================================ */

.main-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-xl);
}

.hero {
    text-align: center;
    padding: var(--spacing-3xl) 0 var(--spacing-2xl);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.badge-glow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-glow);
    opacity: 0.3;
}

.badge-icon {
    font-size: 1rem;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
}

.title-line {
    display: block;
    color: var(--text-primary);
}

.title-gradient {
    display: block;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

.hero-subtitle strong {
    color: var(--primary);
    font-weight: 600;
}

/* ================================================
   Email Generator Card
   ================================================ */

.email-generator {
    margin-bottom: var(--spacing-2xl);
}

.generator-card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-card);
    overflow: hidden;
}

.card-glow {
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 200px;
    background: var(--gradient-primary);
    filter: blur(80px);
    opacity: 0.15;
    pointer-events: none;
}

.email-display {
    margin-bottom: var(--spacing-lg);
}

.email-input-group {
    display: flex;
    align-items: center;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-sm);
    transition: all var(--transition-normal);
}

.email-input-group:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-glow);
}

.email-icon-wrapper {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    color: white;
    flex-shrink: 0;
}

.email-icon-wrapper svg {
    width: 24px;
    height: 24px;
}

.email-input {
    flex: 1;
    padding: var(--spacing-md);
    font-size: 1.1rem;
    font-weight: 600;
    font-family: 'JetBrains Mono', monospace;
    color: var(--text-primary);
    background: transparent;
    min-width: 0;
}

.email-input::placeholder {
    color: var(--text-muted);
    font-weight: 400;
}

.copy-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.9rem;
    transition: all var(--transition-normal);
}

.copy-btn:hover {
    background: var(--primary);
    color: white;
}

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

.copy-btn svg {
    width: 18px;
    height: 18px;
}

.copy-btn .check-icon {
    display: none;
}

.copy-btn.copied .copy-icon {
    display: none;
}

.copy-btn.copied .check-icon {
    display: block;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.action-buttons .btn {
    flex: 1;
    min-width: 140px;
    padding: var(--spacing-md) var(--spacing-lg);
}

.action-buttons .btn-ghost {
    flex: 0;
    min-width: auto;
}

/* Create Email Group - Button + Domain Selector */
.create-email-group {
    display: flex;
    flex: 1;
    gap: 0;
    min-width: 280px;
}

.create-email-group .btn-primary {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
    flex: 1;
}

.domain-select-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.domain-select {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background: var(--bg-card);
    border: 2px solid var(--primary);
    border-left: none;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    padding: var(--spacing-md) var(--spacing-2xl) var(--spacing-md) var(--spacing-md);
    font-size: 0.85rem;
    font-weight: 600;
    font-family: 'JetBrains Mono', monospace;
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-normal);
    min-width: 150px;
    height: 100%;
}

.domain-select:hover {
    background: var(--bg-card-hover);
}

.domain-select:focus {
    outline: none;
    box-shadow: 0 0 0 3px var(--primary-glow);
}

.domain-select option {
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: var(--spacing-sm);
}

.select-arrow {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    color: var(--text-muted);
    pointer-events: none;
}

@media (max-width: 600px) {
    .create-email-group {
        flex-direction: column;
        min-width: 100%;
    }

    .create-email-group .btn-primary {
        border-radius: var(--radius-md) var(--radius-md) 0 0;
    }

    .domain-select {
        border: 2px solid var(--primary);
        border-top: none;
        border-radius: 0 0 var(--radius-md) var(--radius-md);
        width: 100%;
    }
}

.refresh-icon {
    transition: transform 0.5s ease;
}

.btn-secondary.loading .refresh-icon {
    animation: spin 1s linear infinite;
}

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

    to {
        transform: rotate(360deg);
    }
}

/* Status Bar */
.status-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    color: var(--text-muted);
}

.status-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.status-item svg {
    width: 16px;
    height: 16px;
}

.status-divider {
    width: 1px;
    height: 20px;
    background: var(--border-color);
}

.live-indicator {
    position: relative;
    color: var(--success);
    font-weight: 600;
}

.pulse-ring {
    position: absolute;
    left: -8px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success);
    animation: pulseRing 2s ease-out infinite;
}

.pulse-dot {
    position: absolute;
    left: -8px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success);
}

@keyframes pulseRing {
    0% {
        transform: scale(1);
        opacity: 1;
    }

    100% {
        transform: scale(2.5);
        opacity: 0;
    }
}

/* ================================================
   Loading Overlay
   ================================================ */

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    backdrop-filter: blur(4px);
}

.loading-spinner {
    position: relative;
    width: 60px;
    height: 60px;
}

.spinner-circle {
    position: absolute;
    width: 100%;
    height: 100%;
    border: 3px solid transparent;
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spinnerRotate 1.2s linear infinite;
}

.spinner-circle:nth-child(2) {
    width: 80%;
    height: 80%;
    top: 10%;
    left: 10%;
    border-top-color: var(--secondary);
    animation-duration: 1s;
    animation-direction: reverse;
}

.spinner-circle:nth-child(3) {
    width: 60%;
    height: 60%;
    top: 20%;
    left: 20%;
    border-top-color: var(--accent);
    animation-duration: 0.8s;
}

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

    to {
        transform: rotate(360deg);
    }
}

.loading-text {
    margin-top: var(--spacing-lg);
    color: white;
    font-weight: 500;
}

/* ================================================
   Inbox Section
   ================================================ */

.inbox-section {
    margin-bottom: var(--spacing-3xl);
}

.inbox-container {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-card);
}

.inbox-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg) var(--spacing-xl);
    border-bottom: 1px solid var(--border-color);
}

.inbox-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-primary);
}

.inbox-title svg {
    width: 24px;
    height: 24px;
    color: var(--primary);
}

.inbox-title h2 {
    font-size: 1.25rem;
    font-weight: 700;
}

.email-list {
    min-height: 300px;
    max-height: 500px;
    overflow-y: auto;
}

/* Empty State */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3xl);
    text-align: center;
}

.empty-illustration {
    width: 160px;
    height: 160px;
    margin-bottom: var(--spacing-lg);
    opacity: 0.8;
}

.empty-state h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.empty-state p {
    color: var(--text-muted);
    max-width: 300px;
}

/* Email Items */
.email-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg) var(--spacing-xl);
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.email-item:hover {
    background: var(--bg-tertiary);
}

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

.email-item.unread {
    background: rgba(99, 102, 241, 0.05);
    border-left: 3px solid var(--primary);
}

.email-subject {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.email-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    font-size: 0.85rem;
    color: var(--text-muted);
}

.email-from,
.email-date {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.email-from svg,
.email-date svg {
    width: 14px;
    height: 14px;
}

.email-snippet {
    font-size: 0.9rem;
    color: var(--text-secondary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ================================================
   Features Section
   ================================================ */

.features-section {
    margin-bottom: var(--spacing-3xl);
}

.features-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.features-header h2 {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
}

.features-header p {
    color: var(--text-secondary);
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all var(--transition-normal);
    backdrop-filter: blur(10px);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-hover);
}

.feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
    background: color-mix(in srgb, var(--accent) 15%, transparent);
    border-radius: var(--radius-md);
    color: var(--accent);
}

.feature-icon svg {
    width: 28px;
    height: 28px;
}

.feature-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.feature-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ================================================
   Stats Section
   ================================================ */

.stats-section {
    margin-bottom: var(--spacing-3xl);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    backdrop-filter: blur(20px);
}

.stat-item {
    text-align: center;
    padding: var(--spacing-md);
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* ================================================
   Footer
   ================================================ */

.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-3xl) var(--spacing-xl) var(--spacing-xl);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    font-size: 1.25rem;
    font-weight: 800;
}

.footer-logo svg {
    width: 28px;
    height: 28px;
    color: var(--primary);
}

.footer-brand p {
    color: var(--text-muted);
    font-size: 0.9rem;
    max-width: 300px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.footer-column h4 {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.footer-column a {
    display: block;
    color: var(--text-muted);
    font-size: 0.9rem;
    padding: var(--spacing-xs) 0;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border-color);
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ================================================
   Modals
   ================================================ */

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    padding: var(--spacing-lg);
    backdrop-filter: blur(4px);
    animation: fadeIn 0.2s ease;
}

.modal-content {
    position: relative;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    max-width: 600px;
    width: 100%;
    max-height: 85vh;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    animation: slideUp 0.3s ease;
}

.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    color: var(--text-muted);
    transition: all var(--transition-fast);
    z-index: 10;
}

.modal-close:hover {
    background: var(--danger);
    color: white;
}

.modal-close svg {
    width: 20px;
    height: 20px;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Email Detail Modal */
#popupBody {
    padding: var(--spacing-xl);
    overflow-y: auto;
    max-height: calc(85vh - 60px);
}

.email-detail-header {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.email-detail-subject {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    padding-right: 40px;
}

.email-detail-meta {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.email-detail-from,
.email-detail-date {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.email-detail-from svg,
.email-detail-date svg {
    width: 18px;
    height: 18px;
    color: var(--text-muted);
}

.email-detail-body {
    font-size: 0.95rem;
    line-height: 1.8;
    color: var(--text-primary);
    overflow-y: auto;
    max-height: calc(85vh - 200px);
    -webkit-overflow-scrolling: touch;
    will-change: scroll-position;
}

.email-detail-body img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
}

.email-detail-body a {
    color: var(--primary);
    text-decoration: underline;
}

/* QR Modal */
.qr-modal {
    max-width: 360px;
    text-align: center;
}

.qr-content {
    padding: var(--spacing-2xl);
}

.qr-content h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
}

.qr-code {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    background: white;
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
}

.qr-code canvas {
    display: block;
}

.qr-email {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    color: var(--text-secondary);
    word-break: break-all;
}

/* Auth Modal */
.auth-modal {
    max-width: 400px;
}

.auth-header {
    text-align: center;
    padding: var(--spacing-2xl) var(--spacing-xl) var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.auth-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    color: white;
}

.auth-icon svg {
    width: 32px;
    height: 32px;
}

.auth-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.auth-header p {
    color: var(--text-muted);
}

.auth-form {
    padding: var(--spacing-xl);
}

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

.input-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.input-group input {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    font-size: 1rem;
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.input-group input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-glow);
}

.input-group input::placeholder {
    color: var(--text-muted);
}

.auth-error {
    color: var(--danger);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-md);
    min-height: 20px;
}

.auth-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    color: var(--text-secondary);
}

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

.mini-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* ================================================
   Toast Notification
   ================================================ */

.toast {
    position: fixed;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    font-weight: 500;
    z-index: var(--z-toast);
    opacity: 0;
    transition: all var(--transition-normal);
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.toast.success {
    border-left: 4px solid var(--success);
}

.toast.error {
    border-left: 4px solid var(--danger);
}

/* ================================================
   Responsive Design
   ================================================ */

@media (max-width: 768px) {
    .navbar {
        padding: var(--spacing-md);
    }

    .nav-container {
        flex-wrap: wrap;
        gap: var(--spacing-md);
    }

    .nav-actions {
        flex-wrap: wrap;
        justify-content: center;
    }

    .nav-link span,
    .btn span {
        display: none;
    }

    .btn svg {
        margin: 0;
    }

    .logo-badge {
        display: none;
    }

    .main-content {
        padding: var(--spacing-md);
    }

    .hero {
        padding: var(--spacing-2xl) 0 var(--spacing-xl);
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

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

    .email-input {
        font-size: 0.9rem;
    }

    .copy-btn .copy-text {
        display: none;
    }

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

    .action-buttons .btn {
        width: 100%;
    }

    .action-buttons .btn span {
        display: inline;
    }

    .status-bar {
        flex-wrap: wrap;
        gap: var(--spacing-sm);
    }

    .inbox-header {
        padding: var(--spacing-md);
    }

    .email-item {
        padding: var(--spacing-md);
    }

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

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

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }

    .modal-content {
        max-height: 95vh;
        margin: var(--spacing-md);
    }

    .shape {
        display: none;
    }
}

@media (max-width: 480px) {
    .nav-actions .nav-link {
        display: none;
    }

    .email-icon-wrapper {
        width: 40px;
        height: 40px;
    }

    .email-icon-wrapper svg {
        width: 20px;
        height: 20px;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }

    .stat-number {
        font-size: 2rem;
    }
}

/* ================================================
   Animations
   ================================================ */

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    10%,
    30%,
    50%,
    70%,
    90% {
        transform: translateX(-5px);
    }

    20%,
    40%,
    60%,
    80% {
        transform: translateX(5px);
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-hover);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Selection */
::selection {
    background: var(--primary);
    color: white;
}