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

body {
    font-family: 'Inter', sans-serif;
    overflow-x: hidden
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: 'Plus Jakarta Sans', sans-serif
}

html,
body {
    max-width: 100vw;
    overflow-x: hidden
}

::-webkit-scrollbar {
    width: 6px;
    height: 6px
}

::-webkit-scrollbar-track {
    background: transparent
}

::-webkit-scrollbar-thumb {
    background: #94a3b8;
    border-radius: 3px
}

.dark ::-webkit-scrollbar-thumb {
    background: #475569
}

.glass {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2)
}

.dark .glass {
    background: rgba(17, 24, 39, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.05)
}

.glass-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(226, 232, 240, 0.8);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05)
}

.dark .glass-card {
    background: rgba(30, 41, 59, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.05)
}

.sidebar {
    transition: all .3s cubic-bezier(.4, 0, .2, 1)
}

.sidebar-overlay {
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px)
}

@keyframes shimmer {
    0% {
        background-position: -200% 0
    }

    100% {
        background-position: 200% 0
    }
}

@keyframes fadeIn {
    from {
        opacity: 0
    }

    to {
        opacity: 1
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(.95)
    }

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

.skeleton {
    background: linear-gradient(90deg, #e2e8f0 25%, #f1f5f9 50%, #e2e8f0 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite
}

.dark .skeleton {
    background: linear-gradient(90deg, #1e293b 25%, #334155 50%, #1e293b 75%);
    background-size: 200% 100%
}

.animate-fadeIn {
    animation: fadeIn .3s ease
}

.animate-scaleIn {
    animation: scaleIn .3s ease
}

.gradient-text {
    background: linear-gradient(135deg, #4F46E5, #7C3AED);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text
}

.nav-item.active {
    background: linear-gradient(135deg, #4F46E5, #7C3AED);
    color: white
}

.icon-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    min-width: 44px;
    min-height: 44px;
    border-radius: 12px;
    cursor: pointer;
    position: relative;
    z-index: 1;
    transition: all .2s;
    border: none;
    outline: none;
    -webkit-tap-highlight-color: transparent
}

.icon-btn:active {
    transform: scale(.92)
}

.icon-btn svg {
    pointer-events: none
}

.icon-btn .badge-dot {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 9px;
    height: 9px;
    background: #EF4444;
    border-radius: 50%;
    border: 2px solid white
}

.dark .icon-btn .badge-dot {
    border-color: #111827
}

.slide-panel {
    position: fixed;
    top: 0;
    right: 0;
    height: 100%;
    height: 100dvh;
    z-index: 60;
    transform: translateX(100%);
    transition: transform .35s cubic-bezier(.4, 0, .2, 1)
}

.slide-panel.open {
    transform: translateX(0)
}

.panel-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    z-index: 55;
    opacity: 0;
    pointer-events: none;
    transition: opacity .3s
}

.panel-overlay.active {
    opacity: 1;
    pointer-events: auto
}

@media(max-width:1023px) {
    .sidebar {
        transform: translateX(-100%);
        position: fixed;
        z-index: 50
    }

    .sidebar.open {
        transform: translateX(0)
    }
}

.dropdown-menu {
    position: absolute;
    right: 0;
    top: calc(100% + 8px);
    z-index: 50;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px) scale(.97);
    transition: all .2s cubic-bezier(.4, 0, .2, 1)
}

.dropdown-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1)
}

/* Settings */
.settings-tab {
    transition: all .2s;
    cursor: pointer;
    border-left: 3px solid transparent
}

.settings-tab:hover {
    background: rgba(79, 70, 229, 0.05)
}

.dark .settings-tab:hover {
    background: rgba(79, 70, 229, 0.1)
}

.settings-tab.active {
    background: rgba(79, 70, 229, 0.08);
    border-left-color: #4F46E5
}

.dark .settings-tab.active {
    background: rgba(79, 70, 229, 0.15)
}

.settings-tab.active .tab-icon {
    color: #4F46E5
}

.settings-content {
    display: none
}

.settings-content.active {
    display: block;
    animation: fadeIn .3s ease
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
    flex-shrink: 0
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: #cbd5e1;
    transition: .3s;
    border-radius: 24px
}

.dark .toggle-slider {
    background: #475569
}

.toggle-slider:before {
    position: absolute;
    content: '';
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background: white;
    transition: .3s;
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2)
}

input:checked+.toggle-slider {
    background: linear-gradient(135deg, #4F46E5, #7C3AED)
}

input:checked+.toggle-slider:before {
    transform: translateX(20px)
}

.theme-card {
    transition: all .2s;
    cursor: pointer;
    border: 2px solid transparent;
    position: relative
}

.theme-card:hover {
    transform: translateY(-2px)
}

.theme-card.active {
    border-color: #4F46E5
}

.theme-card.active::after {
    content: '✓';
    position: absolute;
    top: 8px;
    right: 8px;
    width: 24px;
    height: 24px;
    background: #4F46E5;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 14px
}

.color-option {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    cursor: pointer;
    transition: all .2s;
    border: 3px solid transparent
}

.color-option:hover {
    transform: scale(1.1)
}

.color-option.active {
    border-color: white;
    box-shadow: 0 0 0 2px #4F46E5
}

.custom-checkbox {
    accent-color: #4F46E5;
    width: 16px;
    height: 16px;
    cursor: pointer
}

.session-card.current::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: #10B981;
    border-radius: 0 3px 3px 0
}

@supports(padding-bottom:env(safe-area-inset-bottom)) {
    .mobile-safe {
        padding-bottom: env(safe-area-inset-bottom)
    }
}