:root {
    --sidebar-w: 272px;
    --sidebar-mini: 80px;
    --header-h: 72px;
    --ease: all .3s cubic-bezier(.4, 0, .2, 1)
}

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

body {
    font-family: 'Plus Jakarta Sans', 'Inter', sans-serif
}

.app-container {
    display: flex;
    min-height: 100vh
}

.sidebar {
    width: var(--sidebar-w);
    min-width: var(--sidebar-w);
    height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
    z-index: 50;
    transition: var(--ease);
    display: flex;
    flex-direction: column;
    overflow: hidden
}

.sidebar.collapsed {
    width: var(--sidebar-mini);
    min-width: var(--sidebar-mini)
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden
}

.sidebar-nav::-webkit-scrollbar {
    width: 4px
}

.sidebar-nav::-webkit-scrollbar-thumb {
    background: rgba(148, 163, 184, .3);
    border-radius: 10px
}

.main-wrapper {
    flex: 1;
    margin-left: var(--sidebar-w);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: var(--ease)
}

body.sidebar-collapsed .main-wrapper {
    margin-left: var(--sidebar-mini)
}

.header {
    height: var(--header-h);
    min-height: var(--header-h);
    position: sticky;
    top: 0;
    z-index: 40
}

.main-content {
    flex: 1;
    overflow-x: hidden
}

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

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 10px
}

.dark ::-webkit-scrollbar-thumb {
    background: #334155
}

.menu-item {
    position: relative
}

.menu-item.active>a {
    background: linear-gradient(135deg, rgba(59, 130, 246, .15), rgba(139, 92, 246, .1))
}

.menu-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 60%;
    background: linear-gradient(180deg, #3b82f6, #8b5cf6);
    border-radius: 0 4px 4px 0
}

.submenu {
    max-height: 0;
    overflow: hidden;
    transition: max-height .4s cubic-bezier(.4, 0, .2, 1)
}

.submenu.open {
    max-height: 500px
}

.menu-arrow {
    transition: transform .3s
}

.menu-arrow.rotated {
    transform: rotate(90deg)
}

.sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, .6);
    backdrop-filter: blur(4px);
    z-index: 45;
    opacity: 0;
    visibility: hidden;
    transition: var(--ease)
}

.sidebar-overlay.active {
    opacity: 1;
    visibility: visible
}

.dropdown-panel {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px) scale(.95);
    transition: var(--ease);
    z-index: 9999;
    pointer-events: none
}

.dropdown-panel.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
    pointer-events: auto
}

.gradient-animated {
    background-size: 200% 200%;
    animation: gs 6s ease infinite
}

@keyframes gs {
    0% {
        background-position: 0% 50%
    }

    50% {
        background-position: 100% 50%
    }

    100% {
        background-position: 0% 50%
    }
}

.ripple {
    position: relative;
    overflow: hidden
}

.ripple::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle, rgba(255, 255, 255, .3) 10%, transparent 10.01%);
    transform: scale(10);
    opacity: 0;
    transition: transform .5s, opacity .8s
}

.ripple:active::after {
    transform: scale(0);
    opacity: 1;
    transition: 0s
}

.badge-pulse {
    position: relative
}

.badge-pulse::after {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: 50%;
    background: inherit;
    animation: bp 1.5s infinite;
    z-index: -1
}

@keyframes bp {
    0% {
        transform: scale(1);
        opacity: .5
    }

    100% {
        transform: scale(2);
        opacity: 0
    }
}

@keyframes pd {
    0% {
        box-shadow: 0 0 0 0 rgba(16, 185, 129, .5)
    }

    70% {
        box-shadow: 0 0 0 8px rgba(16, 185, 129, 0)
    }

    100% {
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0)
    }
}

.pulse-dot {
    animation: pd 2s infinite
}

.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 99999;
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-width: calc(100vw - 40px)
}

.toast {
    padding: 14px 20px;
    border-radius: 12px;
    color: #fff;
    font-weight: 500;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, .15);
    animation: ti .4s cubic-bezier(.4, 0, .2, 1);
    min-width: 280px;
    max-width: 420px
}

.toast.toast-out {
    animation: to .3s forwards
}

@keyframes ti {
    from {
        transform: translateX(100%);
        opacity: 0
    }

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

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

    to {
        transform: translateX(100%);
        opacity: 0
    }
}

.toast-success {
    background: linear-gradient(135deg, #10b981, #059669)
}

.toast-danger {
    background: linear-gradient(135deg, #ef4444, #dc2626)
}

.toast-warning {
    background: linear-gradient(135deg, #f59e0b, #d97706)
}

.toast-info {
    background: linear-gradient(135deg, #3b82f6, #2563eb)
}

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, .6);
    backdrop-filter: blur(6px);
    z-index: 99990;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--ease);
    padding: 16px
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible
}

.modal-box {
    transform: scale(.9) translateY(20px);
    transition: var(--ease);
    max-height: 90vh;
    overflow-y: auto
}

.modal-overlay.active .modal-box {
    transform: scale(1) translateY(0)
}

[data-tooltip] {
    position: relative
}

[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) translateY(5px);
    padding: 6px 12px;
    background: #1e293b;
    color: #fff;
    font-size: 12px;
    font-weight: 500;
    border-radius: 8px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: var(--ease);
    pointer-events: none;
    z-index: 99999
}

.dark [data-tooltip]::after {
    background: #f1f5f9;
    color: #0f172a
}

[data-tooltip]:hover::after {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0)
}

.theme-transition,
.theme-transition *,
.theme-transition *::before,
.theme-transition *::after {
    transition: background-color .3s, color .3s, border-color .3s !important
}

.form-input {
    width: 100%;
    padding: 10px 16px;
    background: #f8fafc;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    font-size: 14px;
    color: #0f172a;
    transition: var(--ease);
    outline: none
}

.form-input:focus {
    border-color: #f97316;
    background: #fff;
    box-shadow: 0 0 0 4px rgba(249, 115, 22, .1)
}

.dark .form-input {
    background: #1e293b;
    border-color: #334155;
    color: #f1f5f9
}

.dark .form-input:focus {
    background: #0f172a;
    border-color: #f97316
}

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: #334155;
    margin-bottom: 8px
}

.dark .form-label {
    color: #cbd5e1
}

.toggle-switch {
    position: relative;
    width: 44px;
    height: 24px;
    background: #cbd5e1;
    border-radius: 999px;
    cursor: pointer;
    transition: var(--ease);
    flex-shrink: 0
}

.toggle-switch.on {
    background: #f97316
}

.toggle-switch::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    background: #fff;
    border-radius: 50%;
    transition: var(--ease);
    box-shadow: 0 2px 4px rgba(0, 0, 0, .2)
}

.toggle-switch.on::after {
    left: 22px
}

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

/* Profile layout */
.profile-container {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 24px
}

@media(max-width:1024px) {
    .profile-container {
        grid-template-columns: 1fr
    }
}

/* Profile card */
.profile-hero {
    position: relative;
    overflow: hidden
}

.profile-hero-bg {
    height: 160px;
    background: linear-gradient(135deg, #f97316 0%, #ec4899 50%, #8b5cf6 100%);
    gradient-animated
}

.profile-hero-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='.1'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E")
}

.profile-avatar-wrapper {
    position: relative;
    display: inline-block;
    margin-top: -64px
}

.profile-avatar {
    width: 128px;
    height: 128px;
    border-radius: 24px;
    object-fit: cover;
    border: 4px solid #fff;
    box-shadow: 0 10px 30px rgba(0, 0, 0, .2)
}

.dark .profile-avatar {
    border-color: #0f172a
}

.avatar-badge {
    position: absolute;
    bottom: 4px;
    right: 4px;
    width: 28px;
    height: 28px;
    background: linear-gradient(135deg, #f97316, #ec4899);
    border-radius: 50%;
    border: 3px solid #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    cursor: pointer
}

.dark .avatar-badge {
    border-color: #0f172a
}

.avatar-badge:hover {
    transform: scale(1.1)
}

/* Settings tab */
.settings-tab {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 500;
    color: #64748b;
    cursor: pointer;
    transition: var(--ease);
    width: 100%;
    text-align: left
}

.settings-tab:hover {
    background: #f1f5f9;
    color: #0f172a
}

.dark .settings-tab {
    color: #94a3b8
}

.dark .settings-tab:hover {
    background: #1e293b;
    color: #f1f5f9
}

.settings-tab.active {
    background: linear-gradient(135deg, #f97316, #ec4899);
    color: #fff;
    box-shadow: 0 4px 12px rgba(249, 115, 22, .3)
}

.settings-tab.active:hover {
    color: #fff
}

/* Section */
.settings-section {
    display: none;
    animation: fadeIn .4s ease
}

.settings-section.active {
    display: block
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px)
    }

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

/* Session/device */
.device-card {
    transition: var(--ease)
}

.device-card:hover {
    background: #f8fafc
}

.dark .device-card:hover {
    background: #1e293b
}

/* Save bar */
.save-bar {
    position: sticky;
    bottom: 16px;
    background: rgba(255, 255, 255, .98);
    backdrop-filter: blur(20px);
    border: 1px solid #e2e8f0;
    border-radius: 16px;
    padding: 12px 20px;
    z-index: 30;
    box-shadow: 0 10px 40px rgba(0, 0, 0, .1);
    transform: translateY(20px);
    opacity: 0;
    transition: var(--ease);
    pointer-events: none
}

.dark .save-bar {
    background: rgba(15, 23, 42, .98);
    border-color: #334155
}

.save-bar.show {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto
}

/* Danger zone */
.danger-zone {
    border: 2px solid #fee2e2;
    background: linear-gradient(135deg, rgba(254, 226, 226, .3), transparent);
    border-radius: 16px
}

.dark .danger-zone {
    border-color: rgba(239, 68, 68, .3);
    background: linear-gradient(135deg, rgba(239, 68, 68, .05), transparent)
}

@media(max-width:1024px) {
    .sidebar {
        transform: translateX(-100%)
    }

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

    .main-wrapper {
        margin-left: 0 !important
    }
}

@media(max-width:640px) {
    :root {
        --header-h: 60px
    }

    .toast {
        min-width: auto;
        max-width: calc(100vw - 40px);
        font-size: 13px
    }

    .dropdown-panel.mobile-full {
        position: fixed !important;
        top: var(--header-h) !important;
        left: 8px !important;
        right: 8px !important;
        width: auto !important;
        max-height: 70vh;
        overflow-y: auto;
        margin-top: 4px !important
    }
}

@media(max-width:375px) {
    .header-icons {
        gap: 2px
    }

    .header-icons .icon-btn {
        width: 32px;
        height: 32px
    }
}