/* ===== CSS Variables & Theme ===== */
:root {
    /* Primary palette - Deep Ocean */
    --color-primary: #0ea5e9;
    --color-primary-dark: #0284c7;
    --color-primary-light: #38bdf8;
    --color-primary-bg: rgba(14, 165, 233, 0.1);
    
    /* Accent */
    --color-accent: #f43f5e;
    --color-accent-light: #fb7185;
    
    /* Neutrals - Midnight */
    --color-bg-primary: #0f172a;
    --color-bg-secondary: #1e293b;
    --color-bg-tertiary: #334155;
    --color-bg-hover: #475569;
    
    /* Text */
    --color-text-primary: #f1f5f9;
    --color-text-secondary: #94a3b8;
    --color-text-muted: #64748b;
    
    /* Borders */
    --color-border: #334155;
    --color-border-light: #475569;
    
    /* States */
    --color-success: #22c55e;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px rgba(14, 165, 233, 0.3);
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    
    /* Border radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Typography */
    --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

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

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

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== Login Screen ===== */
.login-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: 100vh;
}

.login-visual {
    position: relative;
    background: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-bg-primary) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl);
    overflow: hidden;
}

.visual-content {
    position: relative;
    z-index: 2;
    text-align: center;
    animation: fadeInUp 0.8s ease-out;
}

.logo-large {
    width: 120px;
    height: 120px;
    margin: 0 auto var(--spacing-lg);
    color: var(--color-primary);
    filter: drop-shadow(0 0 30px rgba(14, 165, 233, 0.4));
}

.logo-large svg {
    width: 100%;
    height: 100%;
}

.visual-title {
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-sm);
}

.visual-tagline {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    font-weight: 300;
    margin-bottom: var(--spacing-2xl);
}

.visual-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.feature-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

.feature-icon {
    font-size: 1.25rem;
}

/* Decorative elements */
.visual-decoration {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.deco-circle {
    position: absolute;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    opacity: 0.3;
}

.deco-1 {
    width: 400px;
    height: 400px;
    top: -100px;
    left: -100px;
    animation: pulse 8s ease-in-out infinite;
}

.deco-2 {
    width: 300px;
    height: 300px;
    bottom: -50px;
    right: -50px;
    animation: pulse 6s ease-in-out infinite 1s;
}

.deco-3 {
    width: 200px;
    height: 200px;
    top: 50%;
    right: 20%;
    animation: pulse 10s ease-in-out infinite 2s;
}

/* Login form section */
.login-form-section {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl);
    background: var(--color-bg-primary);
}

.login-box {
    width: 100%;
    max-width: 400px;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.login-title {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.login-subtitle {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
}

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

.input-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xs);
}

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

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

.input-group input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-bg);
}

.input-hint {
    display: block;
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: var(--spacing-xs);
}

.email-input-wrapper {
    display: flex;
    align-items: center;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all var(--transition-fast);
}

.email-input-wrapper:focus-within {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-bg);
}

.email-input-wrapper input {
    flex: 1;
    padding: var(--spacing-md);
    background: transparent;
    border: none;
    color: var(--color-text-primary);
    font-family: inherit;
    font-size: 1rem;
    outline: none;
    min-width: 80px;
}

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

.email-domain {
    padding: var(--spacing-md) var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-bg-tertiary) 0%, var(--color-bg-hover) 100%);
    color: var(--color-primary-light);
    font-size: 0.9rem;
    font-weight: 500;
    white-space: nowrap;
    border-left: 2px solid var(--color-primary);
    user-select: none;
    cursor: default;
}

/* Buttons */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
}

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

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

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-bg-tertiary);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-secondary:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-border-light);
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: transparent;
    color: var(--color-text-secondary);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.error-message {
    color: var(--color-error);
    font-size: 0.875rem;
    margin-top: var(--spacing-md);
    text-align: center;
}

.auth-switch {
    margin-top: var(--spacing-lg);
    text-align: center;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

.auth-switch a {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.auth-switch a:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

/* ===== Main Layout ===== */
.main-wrapper {
    display: grid;
    grid-template-columns: 260px 1fr;
    height: 100vh;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    background: var(--color-bg-secondary);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    padding: var(--spacing-lg);
}

.sidebar-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

.logo-small {
    width: 32px;
    height: 32px;
    color: var(--color-primary);
}

.logo-small svg {
    width: 100%;
    height: 100%;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 600;
    background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.btn-compose {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    width: 100%;
    padding: var(--spacing-md);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    margin-bottom: var(--spacing-xl);
}

.btn-compose:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md), 0 0 20px rgba(14, 165, 233, 0.3);
}

/* Navigation */
.sidebar-nav {
    flex: 1;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    color: var(--color-text-secondary);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    margin-bottom: var(--spacing-xs);
}

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

.nav-item.active {
    background: var(--color-primary-bg);
    color: var(--color-primary);
}

.nav-item.active svg {
    color: var(--color-primary);
}

.nav-badge {
    margin-left: auto;
    background: var(--color-primary);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    min-width: 24px;
    text-align: center;
}

/* Sidebar footer */
.sidebar-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex: 1;
    min-width: 0;
}

.user-avatar {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    color: white;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
    flex-shrink: 0;
}

.user-details {
    min-width: 0;
}

.user-email {
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.btn-logout {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: transparent;
    color: var(--color-text-muted);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-logout:hover {
    background: rgba(239, 68, 68, 0.1);
    color: var(--color-error);
}

/* ===== Main Content ===== */
.main-content {
    display: grid;
    grid-template-columns: 380px 1fr;
    overflow: hidden;
}

/* Email List Panel */
.email-list-panel {
    background: var(--color-bg-primary);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

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

.panel-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

/* Search Bar */
.search-bar {
    display: flex;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg-secondary);
    position: relative;
}

.search-bar .search-icon {
    position: absolute;
    left: calc(var(--spacing-lg) + 10px);
    color: var(--color-text-muted);
    pointer-events: none;
}

.search-bar input {
    width: 100%;
    padding: 10px 36px;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-size: 0.9rem;
    transition: all var(--transition-fast);
}

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

.search-bar input:focus {
    outline: none;
    border-color: var(--color-primary);
    background: var(--color-bg-primary);
}

.search-clear {
    position: absolute;
    right: calc(var(--spacing-lg) + 10px);
    background: none;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

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

.email-list-scroll {
    flex: 1;
    overflow-y: auto;
}

#email-list {
    list-style: none;
}

#email-list li {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
    cursor: pointer;
    transition: all var(--transition-fast);
    animation: fadeIn 0.3s ease-out;
}

#email-list li:hover {
    background: var(--color-bg-secondary);
}

#email-list li.active {
    background: var(--color-primary-bg);
    border-left: 3px solid var(--color-primary);
}

.email-subject {
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: 0;
}

.email-subject-text {
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}

.email-participants {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.email-date {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-left: auto;
}

.email-preview {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-top: var(--spacing-xs);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Unread Email Styling */
#email-list li.unread {
    background: var(--color-bg-secondary);
}

#email-list li.unread .email-subject {
    font-weight: 700;
    color: var(--color-text-primary);
}

#email-list li.unread .email-participants {
    font-weight: 600;
    color: var(--color-text-primary);
}

.unread-indicator {
    width: 8px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 50%;
    flex-shrink: 0;
    margin-right: var(--spacing-sm);
}

/* Search Results */
.search-results-header {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--color-bg-tertiary);
    border-bottom: 1px solid var(--color-border);
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.search-results-count {
    font-weight: 600;
    color: var(--color-primary);
}

.search-category {
    padding: var(--spacing-xs) var(--spacing-lg);
    background: var(--color-bg-tertiary);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-text-muted);
    border-bottom: 1px solid var(--color-border);
}

.no-results {
    padding: var(--spacing-xl);
    text-align: center;
    color: var(--color-text-muted);
}

.no-results svg {
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

/* Email View Panel */
.email-view-panel {
    background: var(--color-bg-primary);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.email-content-area {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-xl);
}

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--color-text-muted);
    text-align: center;
}

.empty-state svg {
    margin-bottom: var(--spacing-lg);
    opacity: 0.3;
}

.empty-state h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
}

.empty-state p {
    font-size: 0.95rem;
}

/* Email thread display */
.email-thread-view {
    max-width: 800px;
    margin: 0 auto;
}

.email-thread-subject {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

.email-in-thread {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    overflow: hidden;
    animation: fadeInUp 0.3s ease-out;
}

.email-thread-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.email-thread-header:hover {
    background: var(--color-bg-tertiary);
}

.email-sender-avatar {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    flex-shrink: 0;
}

.email-header-info {
    flex: 1;
    min-width: 0;
}

.email-sender-name {
    font-weight: 600;
    color: var(--color-text-primary);
}

.email-meta {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    margin-top: 2px;
}

.email-expand-icon {
    color: var(--color-text-muted);
    transition: transform var(--transition-fast);
}

.email-in-thread.expanded .email-expand-icon {
    transform: rotate(180deg);
}

.email-thread-body {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    background: var(--color-bg-primary);
}

.email-thread-body pre {
    white-space: pre-wrap;
    word-wrap: break-word;
    font-family: inherit;
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--color-text-primary);
}

.email-thread-body iframe {
    background: white;
    border-radius: var(--radius-md);
}

/* Email Action Buttons */
.email-actions {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    background: var(--color-bg-secondary);
}

.btn-action {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 8px 16px;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.btn-action svg {
    flex-shrink: 0;
}

.btn-reply:hover {
    color: var(--color-primary);
}

.btn-forward:hover {
    color: var(--color-success);
}

.btn-delete:hover {
    color: var(--color-danger);
    border-color: var(--color-danger);
}

/* Trash Styles */
.trash-badge {
    background: var(--color-text-muted) !important;
}

.empty-trash-header {
    padding: var(--spacing-sm) var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

.btn-empty-trash {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 6px 12px;
    background: transparent;
    border: 1px solid var(--color-danger);
    border-radius: var(--radius-md);
    color: var(--color-danger);
    font-size: 0.8rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.trash-item {
    position: relative;
}

.trash-item-actions {
    display: flex;
    gap: var(--spacing-xs);
    flex-shrink: 0;
}

.trash-item-actions button {
    padding: 6px;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-restore:hover {
    background: var(--color-success);
    color: white;
    border-color: var(--color-success);
}

.btn-delete-permanent:hover {
    background: var(--color-danger);
    color: white;
    border-color: var(--color-danger);
}

.badge-trashed {
    background: var(--color-text-muted);
    color: white;
}

.btn-restore-large:hover {
    color: var(--color-success);
    border-color: var(--color-success);
}

.btn-delete-permanent-large:hover {
    color: var(--color-danger);
    border-color: var(--color-danger);
}

/* ===== Compose Modal ===== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 0.2s ease-out;
}

.compose-container {
    width: 100%;
    max-width: 640px;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    animation: slideUp 0.3s ease-out;
    overflow: hidden;
}

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

.compose-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
}

.compose-field {
    display: flex;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.compose-field label {
    width: 70px;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    flex-shrink: 0;
}

.compose-field input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--color-text-primary);
    font-family: inherit;
    font-size: 0.95rem;
    outline: none;
}

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

.compose-field-row {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-xs) var(--spacing-lg);
    padding-left: calc(var(--spacing-lg) + 70px);
    border-bottom: 1px solid var(--color-border);
}

.link-btn {
    background: none;
    border: none;
    color: var(--color-primary);
    font-size: 0.85rem;
    cursor: pointer;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

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

.link-btn.active {
    background: var(--color-primary);
    color: white;
}

.compose-body {
    padding: 0;
}

.compose-body textarea {
    width: 100%;
    min-height: 300px;
    padding: var(--spacing-lg);
    background: var(--color-bg-primary);
    border: none;
    color: var(--color-text-primary);
    font-family: inherit;
    font-size: 0.95rem;
    line-height: 1.6;
    resize: vertical;
    outline: none;
}

.compose-body textarea::placeholder {
    color: var(--color-text-muted);
}

/* Rich Text Editor */
.editor-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-bg-tertiary);
    border-bottom: 1px solid var(--color-border);
}

.toolbar-left {
    display: flex;
    align-items: center;
    gap: 4px;
}

.toolbar-right {
    display: flex;
    align-items: center;
}

.toolbar-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.9rem;
}

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

.toolbar-btn.active {
    background: var(--color-primary);
    color: white;
}

.toolbar-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.toolbar-divider {
    width: 1px;
    height: 20px;
    background: var(--color-border);
    margin: 0 8px;
}

.format-toggle {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

.format-toggle input[type="checkbox"] {
    width: 36px;
    height: 20px;
    appearance: none;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    position: relative;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.format-toggle input[type="checkbox"]::before {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    background: var(--color-text-muted);
    border-radius: 50%;
    top: 1px;
    left: 1px;
    transition: all var(--transition-fast);
}

.format-toggle input[type="checkbox"]:checked {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.format-toggle input[type="checkbox"]:checked::before {
    background: white;
    left: 17px;
}

.toggle-label {
    user-select: none;
}

.rich-editor {
    width: 100%;
    min-height: 300px;
    padding: var(--spacing-lg);
    background: var(--color-bg-primary);
    border: none;
    color: var(--color-text-primary);
    font-family: inherit;
    font-size: 0.95rem;
    line-height: 1.6;
    overflow-y: auto;
    outline: none;
}

.rich-editor:empty::before {
    content: 'Write your message...';
    color: var(--color-text-muted);
}

.rich-editor:focus {
    outline: none;
}

/* Rich editor formatting */
.rich-editor a {
    color: var(--color-primary);
    text-decoration: underline;
}

.rich-editor ul,
.rich-editor ol {
    margin: 0.5em 0;
    padding-left: 1.5em;
}

.rich-editor blockquote {
    border-left: 3px solid var(--color-primary);
    margin: 0.5em 0;
    padding-left: 1em;
    color: var(--color-text-secondary);
}

.compose-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
}

.compose-actions .btn-primary {
    width: auto;
}

/* ===== Toast Notification ===== */
.toast {
    position: fixed;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--color-bg-tertiary);
    color: var(--color-text-primary);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-full);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    font-size: 0.95rem;
    font-weight: 500;
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-base);
    z-index: 2000;
}

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

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

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

/* ===== Animations ===== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(40px) scale(0.96);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.3;
    }
    50% {
        transform: scale(1.05);
        opacity: 0.15;
    }
}

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

.spinning {
    animation: spin 1s linear infinite;
}

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

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

::-webkit-scrollbar-thumb {
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-bg-hover);
}

/* ===== Responsive ===== */
@media (max-width: 1200px) {
    .main-content {
        grid-template-columns: 320px 1fr;
    }
}

@media (max-width: 992px) {
    .login-wrapper {
        grid-template-columns: 1fr;
    }
    
    .login-visual {
        display: none;
    }
    
    .main-wrapper {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        position: fixed;
        left: -260px;
        top: 0;
        height: 100vh;
        z-index: 100;
        transition: left var(--transition-base);
    }
    
    .sidebar.open {
        left: 0;
    }
    
    .main-content {
        grid-template-columns: 1fr;
    }
    
    .email-list-panel {
        display: none;
    }
    
    .email-list-panel.active {
        display: flex;
    }
    
    .email-view-panel {
        display: none;
    }
    
    .email-view-panel.active {
        display: flex;
    }
}

/* Loading state */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* Email list empty state */
#email-list:empty::after {
    content: 'No emails yet';
    display: block;
    padding: var(--spacing-xl);
    text-align: center;
    color: var(--color-text-muted);
}

/* ===== Sent Email Styles ===== */
.sent-status {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    border-radius: var(--radius-full);
    font-size: 0.7rem;
    font-weight: 700;
    margin-right: var(--spacing-xs);
    flex-shrink: 0;
}

.status-sent {
    background: var(--color-success);
    color: white;
}

.status-failed {
    background: var(--color-error);
    color: white;
}

.sent-avatar {
    background: linear-gradient(135deg, var(--color-success) 0%, #16a34a 100%) !important;
}

.email-status-badge {
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-sent {
    background: rgba(34, 197, 94, 0.15);
    color: var(--color-success);
}

.badge-failed {
    background: rgba(239, 68, 68, 0.15);
    color: var(--color-error);
}

/* ===== Spam Folder Styles ===== */
.spam-badge {
    background: var(--color-warning) !important;
}

.spam-item {
    border-left: 3px solid var(--color-warning) !important;
}

.spam-indicator {
    margin-right: var(--spacing-xs);
}

.spam-score {
    font-size: 0.7rem;
    padding: 2px 6px;
    background: rgba(245, 158, 11, 0.15);
    color: var(--color-warning);
    border-radius: var(--radius-sm);
    font-weight: 600;
}

.spam-avatar {
    background: linear-gradient(135deg, var(--color-warning) 0%, #d97706 100%) !important;
    font-size: 1.2rem;
}

.spam-info-banner {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--spacing-md);
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.3);
    border-radius: var(--radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.spam-details {
    flex: 1;
}

.spam-details strong {
    color: var(--color-warning);
    display: block;
    margin-bottom: var(--spacing-sm);
}

.spam-checks {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.spam-check {
    font-size: 0.75rem;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    text-transform: uppercase;
}

.check-pass {
    background: rgba(34, 197, 94, 0.15);
    color: var(--color-success);
}

.check-fail {
    background: rgba(239, 68, 68, 0.15);
    color: var(--color-error);
}

.spam-score-display {
    font-size: 0.75rem;
    padding: 2px 8px;
    background: rgba(245, 158, 11, 0.2);
    color: var(--color-warning);
    border-radius: var(--radius-sm);
    font-weight: 600;
}

.spam-reason {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    margin: 0;
}

.btn-not-spam {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-success);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn-not-spam:hover {
    background: #16a34a;
    transform: translateY(-1px);
}

/* ===== Attachment Styles ===== */
.compose-attachments {
    padding: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

.attachment-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.attachment-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-bg-tertiary);
    color: var(--color-text-secondary);
    border: 1px dashed var(--color-border);
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.attachment-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.attachment-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 0.85rem;
}

.attachment-item .attachment-icon {
    color: var(--color-primary);
}

.attachment-item .attachment-name {
    max-width: 150px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.attachment-item .attachment-size {
    color: var(--color-text-muted);
    font-size: 0.75rem;
}

.attachment-item .attachment-remove {
    background: none;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    padding: 2px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color var(--transition-fast);
}

.attachment-item .attachment-remove:hover {
    color: var(--color-error);
}

/* Email view attachments */
.email-attachments {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.email-attachments h4 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.email-attachments-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.email-attachment-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--color-text-primary);
    font-size: 0.85rem;
    transition: all var(--transition-fast);
}

.email-attachment-item:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-primary);
}

.email-attachment-item .att-icon {
    color: var(--color-primary);
}

.email-attachment-item .att-info {
    display: flex;
    flex-direction: column;
}

.email-attachment-item .att-name {
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.email-attachment-item .att-size {
    color: var(--color-text-muted);
    font-size: 0.7rem;
}

.email-attachment-item .att-download,
.email-attachment-item .att-preview-icon {
    color: var(--color-primary);
    margin-left: var(--spacing-sm);
}

.email-attachment-item {
    cursor: pointer;
    transition: all var(--transition-fast);
}

.email-attachment-item:hover {
    background: var(--color-primary-bg);
    border-color: var(--color-primary);
}

/* ===== Admin Dashboard ===== */
.admin-nav-item {
    border-top: 1px solid var(--color-border);
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md) !important;
}

.admin-panel {
    flex: 1;
    padding: var(--spacing-xl);
    overflow-y: auto;
    background: var(--color-bg-primary);
}

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
}

.admin-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-text-primary);
}

.btn-back-to-mail {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 10px 16px;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

/* Stats Cards */
.admin-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.stat-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.stat-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
}

.stat-icon.users-icon { background: rgba(14, 165, 233, 0.2); color: var(--color-primary); }
.stat-icon.active-icon { background: rgba(34, 197, 94, 0.2); color: var(--color-success); }
.stat-icon.blocked-icon { background: rgba(244, 63, 94, 0.2); color: var(--color-danger); }
.stat-icon.sent-icon { background: rgba(14, 165, 233, 0.2); color: var(--color-primary); }
.stat-icon.failed-icon { background: rgba(244, 63, 94, 0.2); color: var(--color-danger); }
.stat-icon.spam-icon { background: rgba(245, 158, 11, 0.2); color: var(--color-warning); }

.stat-info {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* Admin Section */
.admin-section {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.admin-section h2 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-lg);
}

/* Admin Table */
.admin-table-container {
    overflow-x: auto;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
}

.admin-table th,
.admin-table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.admin-table th {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.admin-table td {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

.admin-table tbody tr:hover {
    background: var(--color-bg-tertiary);
}

/* Status & Role Badges */
.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-active { background: rgba(34, 197, 94, 0.2); color: var(--color-success); }
.badge-blocked { background: rgba(244, 63, 94, 0.2); color: var(--color-danger); }
.badge-pending { background: rgba(245, 158, 11, 0.2); color: var(--color-warning); }
.badge-admin { background: rgba(14, 165, 233, 0.2); color: var(--color-primary); }
.badge-user { background: var(--color-bg-tertiary); color: var(--color-text-muted); }

/* Action Buttons in Table */
.admin-actions {
    display: flex;
    gap: var(--spacing-xs);
}

.admin-actions button {
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 1px solid;
}

.btn-block {
    background: transparent;
    border-color: var(--color-danger);
    color: var(--color-danger);
}

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

.btn-unblock {
    background: transparent;
    border-color: var(--color-success);
    color: var(--color-success);
}

.btn-unblock:hover {
    background: var(--color-success);
    color: white;
}

.btn-make-admin {
    background: transparent;
    border-color: var(--color-primary);
    color: var(--color-primary);
}

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

.btn-remove-admin {
    background: transparent;
    border-color: var(--color-text-muted);
    color: var(--color-text-muted);
}

.btn-remove-admin:hover {
    background: var(--color-text-muted);
    color: white;
}

/* ===== Attachment Preview Modal ===== */
.preview-container {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 900px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    animation: modalSlideIn 0.3s ease-out;
}

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

.preview-header h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 70%;
}

.preview-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.btn-preview-action {
    padding: 8px;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-preview-action:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

.btn-preview-close {
    padding: 8px;
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-preview-close:hover {
    color: var(--color-danger);
}

.preview-content {
    flex: 1;
    padding: var(--spacing-lg);
    overflow: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 300px;
    background: var(--color-bg-primary);
}

.preview-content img {
    max-width: 100%;
    max-height: 70vh;
    object-fit: contain;
    border-radius: var(--radius-md);
}

.preview-content iframe {
    width: 100%;
    height: 70vh;
    border: none;
    border-radius: var(--radius-md);
    background: white;
}

.preview-content pre {
    width: 100%;
    max-height: 70vh;
    overflow: auto;
    padding: var(--spacing-lg);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    font-family: 'Fira Code', monospace;
    font-size: 0.9rem;
    color: var(--color-text-primary);
    white-space: pre-wrap;
    word-wrap: break-word;
}

.preview-unsupported {
    text-align: center;
    color: var(--color-text-muted);
}

.preview-unsupported svg {
    width: 64px;
    height: 64px;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

.preview-unsupported p {
    margin-bottom: var(--spacing-md);
}

.preview-unsupported .btn-download-large {
    padding: 12px 24px;
    background: var(--color-primary);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.preview-unsupported .btn-download-large:hover {
    background: var(--color-primary-dark);
}