/* QMail Unique Sidebar Layout - Quantum Theme */

/* Reset */
body {
    margin: 0;
    padding: 0;
    overflow-x: hidden;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: #f8f9fc;
}

/* Top Header - Gradient with Quantum Effect */
.top-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 72px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    border-bottom: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
    z-index: 1000;
    box-shadow: 0 8px 32px rgba(102, 126, 234, 0.25);
    backdrop-filter: blur(10px);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 24px;
}

.menu-toggle {
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.2);
    font-size: 20px;
    color: white;
    cursor: pointer;
    padding: 10px 12px;
    border-radius: 12px;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.menu-toggle:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: scale(1.05);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: white;
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.logo i {
    font-size: 28px;
    animation: quantum-spin 3s linear infinite;
}

@keyframes quantum-spin {
    0%, 100% { transform: rotate(0deg); }
    50% { transform: rotate(180deg); }
}

.logo-text {
    color: white;
    text-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

/* Search Box - Modern Design */
.header-center {
    flex: 1;
    max-width: 600px;
    margin: 0 40px;
}

.search-box {
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 16px;
    padding: 0 20px;
    height: 48px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.search-box:focus-within {
    background: white;
    box-shadow: 0 8px 24px rgba(102, 126, 234, 0.3);
    transform: translateY(-2px);
}

.search-box i {
    color: #667eea;
    margin-right: 12px;
    font-size: 18px;
}

.search-input {
    flex: 1;
    border: none;
    background: transparent;
    outline: none;
    font-size: 15px;
    color: #2d3748;
    font-weight: 500;
}

.search-input::placeholder {
    color: #a0aec0;
}

/* Header Right Icons */
.header-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-icon {
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.2);
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: white;
    font-size: 18px;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.header-icon:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

/* Sidebar - Modern Card Style */
.sidebar {
    position: fixed;
    left: 0;
    top: 72px;
    width: 280px;
    height: calc(100vh - 72px);
    background: white;
    border-right: none;
    padding: 24px 16px;
    overflow-y: auto;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 900;
    box-shadow: 4px 0 24px rgba(0,0,0,0.06);
}

.sidebar.collapsed {
    transform: translateX(-100%);
}

/* Compose Button - Unique Design */
.compose-btn-wrapper {
    padding: 0 8px 24px 8px;
}

.compose-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 16px;
    padding: 16px 24px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 16px rgba(102, 126, 234, 0.3);
    position: relative;
    overflow: hidden;
}

.compose-btn::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;
}

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

.compose-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(102, 126, 234, 0.4);
}

.compose-btn i {
    font-size: 20px;
}

/* Sidebar Navigation - Card Style */
.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 14px 20px;
    margin: 0;
    border-radius: 14px;
    color: #4a5568;
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
}

.nav-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 0;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 0 4px 4px 0;
    transition: height 0.3s ease;
}

.nav-item:hover {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.08), rgba(118, 75, 162, 0.08));
    color: #667eea;
    transform: translateX(4px);
}

.nav-item:hover::before {
    height: 60%;
}

.nav-item.active {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.15), rgba(118, 75, 162, 0.15));
    color: #667eea;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.15);
}

.nav-item.active::before {
    height: 80%;
}

.nav-item i {
    font-size: 20px;
    width: 24px;
    text-align: center;
    transition: transform 0.3s ease;
}

.nav-item:hover i {
    transform: scale(1.15);
}

.nav-item.active i {
    color: #667eea;
}

.nav-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, #e2e8f0, transparent);
    margin: 16px 0;
}

/* Sync Button Specific Styles */
.sync-btn {
    background: linear-gradient(135deg, #48bb78 0%, #38a169 100%);
    color: white !important;
    border: none;
    width: 100%;
    text-align: left;
}

.sync-btn:hover {
    background: linear-gradient(135deg, #38a169 0%, #2f855a 100%);
    color: white !important;
}

.sync-btn i.fa-spin {
    animation: spin 1s linear infinite;
}

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

/* Main Content Wrapper */
.main-wrapper {
    margin-left: 280px;
    margin-top: 72px;
    min-height: calc(100vh - 72px);
    transition: margin-left 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    background: #f8f9fc;
}

.main-wrapper.sidebar-collapsed {
    margin-left: 0;
}

.main-content {
    padding: 32px;
    max-width: 100%;
}

/* Footer - Minimal Design */
.footer {
    background: white;
    text-align: center;
    padding: 24px;
    margin-top: 48px;
    border-top: 1px solid #e2e8f0;
    color: #718096;
}

.footer i {
    color: #667eea;
}

/* Badge for unread count */
.nav-item .badge {
    margin-left: auto;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 700;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
}

/* Scrollbar Styling */
.sidebar::-webkit-scrollbar {
    width: 6px;
}

.sidebar::-webkit-scrollbar-track {
    background: transparent;
}

.sidebar::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 10px;
}

.sidebar::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #764ba2, #667eea);
}

/* Responsive Design */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        box-shadow: 8px 0 32px rgba(0,0,0,0.15);
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    .main-wrapper {
        margin-left: 0;
    }
    
    .header-center {
        display: none;
    }
    
    .logo-text {
        display: none;
    }
    
    .top-header {
        padding: 0 16px;
    }
}

/* Dark Mode */
body.dark-mode {
    background: #1a202c;
}

body.dark-mode .top-header {
    background: linear-gradient(135deg, #4c51bf 0%, #553c9a 50%, #6b46c1 100%);
}

body.dark-mode .sidebar {
    background: #2d3748;
    box-shadow: 4px 0 24px rgba(0,0,0,0.3);
}

body.dark-mode .search-box {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

body.dark-mode .search-input {
    color: white;
}

body.dark-mode .search-input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

body.dark-mode .nav-item {
    color: #e2e8f0;
}

body.dark-mode .nav-item:hover {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.2), rgba(118, 75, 162, 0.2));
    color: #a5b4fc;
}

body.dark-mode .nav-item.active {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.3), rgba(118, 75, 162, 0.3));
    color: #c7d2fe;
}

body.dark-mode .footer {
    background: #2d3748;
    border-top-color: #4a5568;
    color: #a0aec0;
}

body.dark-mode .main-wrapper {
    background: #1a202c;
}

body.dark-mode .main-content {
    color: #e2e8f0;
}

/* Animations */
@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.nav-item {
    animation: slideInRight 0.3s ease forwards;
}

.nav-item:nth-child(1) { animation-delay: 0.05s; }
.nav-item:nth-child(2) { animation-delay: 0.1s; }
.nav-item:nth-child(3) { animation-delay: 0.15s; }
.nav-item:nth-child(4) { animation-delay: 0.2s; }
.nav-item:nth-child(5) { animation-delay: 0.25s; }
.nav-item:nth-child(6) { animation-delay: 0.3s; }
.nav-item:nth-child(7) { animation-delay: 0.35s; }
.nav-item:nth-child(8) { animation-delay: 0.4s; }

/* Quantum Effect on Logo */
@keyframes quantum-glow {
    0%, 100% {
        text-shadow: 0 0 10px rgba(255,255,255,0.5),
                     0 0 20px rgba(102, 126, 234, 0.5),
                     0 0 30px rgba(118, 75, 162, 0.5);
    }
    50% {
        text-shadow: 0 0 20px rgba(255,255,255,0.8),
                     0 0 30px rgba(102, 126, 234, 0.8),
                     0 0 40px rgba(118, 75, 162, 0.8);
    }
}

.logo-text {
    animation: quantum-glow 2s ease-in-out infinite;
}

/* Hover effect for compose button */
@keyframes pulse {
    0%, 100% {
        box-shadow: 0 4px 16px rgba(102, 126, 234, 0.3);
    }
    50% {
        box-shadow: 0 4px 24px rgba(102, 126, 234, 0.5);
    }
}

.compose-btn {
    animation: pulse 2s ease-in-out infinite;
}

.compose-btn:hover {
    animation: none;
}

/* Glass morphism effect */
.glass-effect {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Tooltip style */
.nav-item:hover::after {
    content: attr(data-tooltip);
    position: absolute;
    left: 100%;
    margin-left: 12px;
    padding: 8px 12px;
    background: #2d3748;
    color: white;
    border-radius: 8px;
    font-size: 13px;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
}

/* Loading animation for nav items */
@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}