/* ============================================
   CSS Variables & Theme
   ============================================ */
:root {
    /* Colors - Light Mode */
    --color-primary: #A67C52;
    --color-secondary: #2D3748;
    --color-accent: #F56565;
    --color-accent-2: #48BB78;
    --color-bg: #F7FAFC;
    --color-surface: #FFFFFF;
    --color-text: #2D3748;
    --color-text-secondary: #718096;
    --color-border: #E2E8F0;
    
    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
    
    /* Typography */
    --font-heading: 'Inter', sans-serif;
    --font-body: 'Merriweather', serif;
    --font-mono: 'Fira Code', monospace;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;
}

[data-theme="dark"] {
    --color-bg: #1A202C;
    --color-surface: #2D3748;
    --color-text: #F7FAFC;
    --color-text-secondary: #A0AEC0;
    --color-border: #4A5568;
    --glass-bg: rgba(45, 55, 72, 0.3);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    transition: background-color var(--transition-normal), color var(--transition-normal);
    min-height: 100vh;
}

/* ============================================
   Container & Layout
   ============================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ============================================
   Header
   ============================================ */
.header {
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--color-border);
    background-color: var(--color-surface);
    transition: all var(--transition-normal);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--color-text);
}

.icon-button {
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    color: var(--color-text);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-button:hover {
    background-color: var(--color-bg);
    transform: scale(1.05);
}

.icon-button:active {
    transform: scale(0.95);
}

.hidden {
    display: none !important;
}

/* ============================================
   Hero Section
   ============================================ */
.main {
    padding: var(--spacing-xl) 0;
}

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

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 900;
    margin-bottom: var(--spacing-sm);
    line-height: 1.2;
}

.gradient-text {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ============================================
   Email Generator
   ============================================ */
.email-generator {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    box-shadow: var(--glass-shadow);
    max-width: 700px;
    margin: 0 auto var(--spacing-lg);
}

.input-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.email-input {
    flex: 1;
    min-width: 150px;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-size: 1rem;
    background-color: var(--color-surface);
    color: var(--color-text);
    transition: all var(--transition-fast);
}

.email-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(166, 124, 82, 0.1);
}

.email-separator {
    font-family: var(--font-mono);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text-secondary);
}

.domain-select {
    flex: 1;
    min-width: 150px;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-size: 1rem;
    background-color: var(--color-surface);
    color: var(--color-text);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.domain-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(166, 124, 82, 0.1);
}

.generate-btn {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-primary), #8B6543);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-heading);
    font-size: 1.125rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    transition: all var(--transition-fast);
    box-shadow: 0 4px 12px rgba(166, 124, 82, 0.3);
}

.generate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(166, 124, 82, 0.4);
}

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

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

/* ============================================
   Current Email Display
   ============================================ */
.current-email {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--glass-shadow);
    max-width: 700px;
    margin: 0 auto;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.current-email-content {
    margin-bottom: var(--spacing-md);
}

.current-email-label {
    display: block;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xs);
}

.current-email-address {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background-color: var(--color-surface);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.current-email-address code {
    flex: 1;
    font-family: var(--font-mono);
    font-size: 1rem;
    color: var(--color-primary);
    word-break: break-all;
}

.copy-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
}

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

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

.action-btn {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    cursor: pointer;
    color: var(--color-text);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.action-btn:hover {
    background-color: var(--color-bg);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.timer-display {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-family: var(--font-mono);
    font-weight: 600;
    color: var(--color-text);
}

/* ============================================
   Status Bar
   ============================================ */
.status-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background: var(--color-surface);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

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

.status-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.status-connected {
    background-color: rgba(72, 187, 120, 0.1);
    color: var(--color-accent-2);
}

.status-text {
    font-weight: 600;
    color: var(--color-text);
}

.status-label {
    color: var(--color-text-secondary);
    margin-right: var(--spacing-xs);
}

.status-value {
    font-weight: 700;
    font-family: var(--font-heading);
    color: var(--color-primary);
    font-size: 1.25rem;
}

/* ============================================
   Inbox Section
   ============================================ */
.inbox-section {
    margin-top: var(--spacing-xl);
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
}

.email-list {
    display: grid;
    gap: var(--spacing-md);
}

.email-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--glass-shadow);
    cursor: pointer;
    transition: all var(--transition-fast);
    animation: emailSlideIn 0.3s ease;
}

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

.email-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
    border-color: var(--color-primary);
}

.email-card-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: var(--spacing-sm);
}

.email-from {
    font-weight: 600;
    color: var(--color-text);
    font-family: var(--font-heading);
}

.email-date {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.email-subject {
    font-weight: 700;
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text);
}

.email-preview {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.empty-state {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--color-text-secondary);
}

.empty-state svg {
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

.empty-state p {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
}

.empty-state small {
    font-size: 0.875rem;
}

/* ============================================
   Modal
   ============================================ */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    position: relative;
    background-color: var(--color-surface);
    border-radius: var(--radius-lg);
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: modalSlideIn 0.3s ease;
}

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

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

.modal-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    flex: 1;
    margin-right: var(--spacing-md);
}

.close-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
}

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

.modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
    max-height: calc(90vh - 120px);
}

.email-meta {
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--color-bg);
    border-radius: var(--radius-md);
}

.email-meta-item {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
}

.email-meta-item:last-child {
    margin-bottom: 0;
}

.email-meta-label {
    font-weight: 600;
    color: var(--color-text-secondary);
    min-width: 60px;
}

.email-meta-value {
    color: var(--color-text);
}

.email-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.action-btn-secondary {
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    color: var(--color-text);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: all var(--transition-fast);
}

.action-btn-secondary:hover {
    background-color: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
    transform: translateY(-1px);
}

.email-body {
    line-height: 1.8;
    color: var(--color-text);
}

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

.attachments-list {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.attachments-list h4 {
    font-family: var(--font-heading);
    margin-bottom: var(--spacing-sm);
}

/* ============================================
   Toast Notifications
   ============================================ */
.toast-container {
    position: fixed;
    top: var(--spacing-md);
    right: var(--spacing-md);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toast {
    background-color: var(--color-surface);
    border-left: 4px solid var(--color-primary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    min-width: 300px;
    animation: toastSlideIn 0.3s ease;
}

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

.toast.success {
    border-left-color: var(--color-accent-2);
}

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

.toast-message {
    font-weight: 600;
    color: var(--color-text);
}

/* ============================================
   Loading Overlay
   ============================================ */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 3000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .input-group {
        flex-direction: column;
        align-items: stretch;
    }
    
    .email-separator {
        text-align: center;
    }
    
    .status-bar {
        flex-direction: column;
        gap: var(--spacing-sm);
        align-items: flex-start;
    }
    
    .modal-content {
        margin: var(--spacing-sm);
    }
    
    .toast-container {
        left: var(--spacing-sm);
        right: var(--spacing-sm);
    }
    
    .toast {
        min-width: auto;
    }
}

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

button:focus-visible,
input:focus-visible,
select:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}



/* ============================================
   Settings Panel
   ============================================ */
.settings-panel {
    position: fixed;
    top: 0;
    right: 0;
    width: 100%;
    max-width: 400px;
    height: 100vh;
    background-color: var(--color-surface);
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.15);
    z-index: 1500;
    transform: translateX(100%);
    transition: transform var(--transition-normal);
}

.settings-panel:not(.hidden) {
    transform: translateX(0);
}

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

.settings-header h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
}

.settings-body {
    padding: var(--spacing-lg);
}

.setting-item {
    margin-bottom: var(--spacing-lg);
}

.setting-item label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text);
}

.setting-item input[type="checkbox"] {
    margin-right: var(--spacing-xs);
    width: 18px;
    height: 18px;
    cursor: pointer;
}

@media (max-width: 768px) {
    .settings-panel {
        max-width: 100%;
    }
}