:root {
    /* MD3 Color Tokens - Dark Theme (Violet/Deep Space) */
    --md-sys-color-background: #09090b;
    --md-sys-color-on-background: #e2e2e6;

    --md-sys-color-surface: #0f1115;
    /* Main card bg */
    --md-sys-color-surface-dim: #09090b;
    /* App bg */
    --md-sys-color-surface-container: #1b1f26;
    /* Elevated cards */
    --md-sys-color-surface-container-high: #242933;
    /* Modal/Nav */

    --md-sys-color-primary: #d0bcff;
    --md-sys-color-on-primary: #381e72;
    --md-sys-color-primary-container: #4f378b;
    --md-sys-color-on-primary-container: #eaddff;

    --md-sys-color-secondary: #ccc2dc;
    --md-sys-color-on-secondary: #332d41;
    --md-sys-color-secondary-container: #4a4458;
    --md-sys-color-on-secondary-container: #e8def8;

    --md-sys-color-tertiary: #efb8c8;
    --md-sys-color-outline: #938f99;
    --md-sys-color-outline-variant: #49454f;

    --radius-l: 24px;
    --radius-pill: 50px;
    --font-main: 'Outfit', sans-serif;

    /* Effects */
    --elevation-1: 0px 1px 3px 1px rgba(0, 0, 0, 0.15), 0px 1px 2px 0px rgba(0, 0, 0, 0.3);
    --elevation-2: 0px 2px 6px 2px rgba(0, 0, 0, 0.15), 0px 1px 2px 0px rgba(0, 0, 0, 0.3);
    --glass-bg: rgba(30, 33, 40, 0.7);
    --glass-border: rgba(255, 255, 255, 0.08);
    /* Faint stroke for premium feel */
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

body {
    background-color: var(--md-sys-color-background);
    color: var(--md-sys-color-on-background);
    font-family: var(--font-main);
    font-size: 16px;
    min-height: 100vh;
    padding-bottom: 80px;
    /* Space for bottom nav */
}

/* Background Animation */
#stars-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    background: radial-gradient(circle at 50% 100%, #17101f 0%, #09090b 100%);
    opacity: 0.6;
}

.glow-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: radial-gradient(circle at 80% 10%, rgba(208, 188, 255, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 20% 90%, rgba(79, 55, 139, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

/* Typography */
h1 {
    font-size: 32px;
    font-weight: 600;
    color: var(--md-sys-color-on-background);
    letter-spacing: -0.5px;
    margin-bottom: 4px;
}

h2 {
    font-size: 20px;
    font-weight: 500;
    color: var(--md-sys-color-on-background);
}

.subtitle {
    color: var(--md-sys-color-outline);
    font-size: 14px;
    font-weight: 400;
}

/* Layout */
.app-layout {
    margin: 0 auto;
    min-height: 100vh;
}

.sidebar {
    display: none;
    /* Hidden on mobile */
    position: sticky;
    top: 0;
    height: 100vh;
    padding: 30px;
    flex-direction: column;
    z-index: 50;
}

.content-area {
    flex: 1;
    padding: 0;
    display: flex;
    flex-direction: column;
    min-width: 0;
    /* Prevent flex overflow */
}

/* Components: Glass / Surface */
.glass {
    background: var(--md-sys-color-surface-container);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-l);
    backdrop-filter: blur(10px);
    /* Less blur for performance, color does work */
}

/* Headers */
.mobile-header {
    height: 64px;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(9, 9, 11, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
}

.logo-mini {
    font-size: 22px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    letter-spacing: -0.5px;
}

.user-chip .avatar-xs {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 14px;
}

/* View Container */
.view-container {
    padding: 24px;
    animation: fadeUp 0.3s cubic-bezier(0.2, 0.0, 0, 1.0);
}

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(15px);
    }

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

/* MD3 Cards */
.status-card {
    background: var(--md-sys-color-surface-container);
    padding: 24px;
    border-radius: var(--radius-l);
    margin-bottom: 16px;
    position: relative;
    overflow: hidden;
    border: 1px solid var(--glass-border);
    box-shadow: var(--elevation-1);
}

/* Stats Ring */
.status-ring {
    width: 120px;
    height: 120px;
    margin-bottom: 16px;
    align-self: center;
}

.circular-chart {
    display: block;
    width: 100%;
}

.circle-bg {
    stroke: var(--md-sys-color-surface-container-high);
    stroke-width: 8;
    /* Thicker premium look */
    fill: none;
}

.circle {
    stroke: var(--md-sys-color-primary);
    stroke-width: 8;
    stroke-linecap: round;
    fill: none;
    transition: stroke-dasharray 1s ease;
}

.ring-content {
    position: absolute;
    top: 24px;
    left: 24px;
    width: 120px;
    height: 120px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.ring-content .value {
    font-size: 24px;
    font-weight: 700;
    color: var(--md-sys-color-primary);
}

.ring-content .unit {
    font-size: 12px;
    color: var(--md-sys-color-outline);
}

/* Details List */
.status-details {
    background: var(--md-sys-color-surface-dim);
    border-radius: 16px;
    padding: 16px;
}

.detail-item {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid var(--md-sys-color-outline-variant);
    font-size: 15px;
}

.detail-item:last-child {
    border: none;
    padding-bottom: 0;
}

.detail-item:first-child {
    padding-top: 0;
}

/* Quick Actions */
.quick-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.action-card {
    background: var(--md-sys-color-surface-container);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-l);
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    transition: transform 0.1s;
    user-select: none;
}

.action-card:active {
    transform: scale(0.98);
    background: var(--md-sys-color-surface-container-high);
}

.action-card span {
    font-weight: 500;
    font-size: 15px;
}

.icon-circle {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--md-sys-color-secondary-container);
    color: var(--md-sys-color-on-secondary-container);
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-circle.pop {
    background: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
}

/* Shop Items */
.plans-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.plan-card {
    background: var(--md-sys-color-surface-container);
    border-radius: var(--radius-l);
    padding: 20px;
    border: 1px solid var(--glass-border);
}

.plan-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.plan-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--md-sys-color-on-surface);
}

.plan-price {
    font-size: 20px;
    font-weight: 700;
    color: var(--md-sys-color-primary);
}

.plan-specs {
    display: flex;
    gap: 16px;
    margin-bottom: 16px;
    color: var(--md-sys-color-outline);
    font-size: 14px;
}

/* Buttons */
.btn-primary {
    width: 100%;
    height: 48px;
    border-radius: var(--radius-pill);
    border: none;
    background: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    box-shadow: var(--elevation-1);
    transition: box-shadow 0.2s;
}

.btn-primary:active {
    box-shadow: none;
}

.btn-secondary {
    width: 100%;
    height: 48px;
    border-radius: var(--radius-pill);
    border: 1px solid var(--md-sys-color-outline);
    background: transparent;
    color: var(--md-sys-color-primary);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
}

.btn-small {
    height: 40px;
    padding: 0 20px;
    border-radius: var(--radius-pill);
    border: none;
    background: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
    font-weight: 600;
    cursor: pointer;
}

/* MD3 Bottom Navigation */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 80px;
    background: var(--md-sys-color-surface-container);
    display: flex;
    justify-content: space-around;
    align-items: center;
    border-top: 1px solid var(--glass-border);
    z-index: 100;
    padding-bottom: 10px;
    /* Safe area */
}

.nav-item {
    background: none;
    border: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    width: 64px;
    cursor: pointer;
    color: var(--md-sys-color-outline);
}

.nav-item svg {
    z-index: 2;
    transition: all 0.2s;
}

/* Active Indicator (Pill) */
.nav-item.active {
    color: var(--md-sys-color-on-secondary-container);
}

.nav-item.active svg {
    background: var(--md-sys-color-secondary-container);
    border-radius: 16px;
    padding: 4px 20px;
    width: 64px;
    box-sizing: content-box;
    /* Stretch pill */
    height: 24px;
}

/* Center FAB Override for 'Config' */
.nav-item.center-fab {
    transform: translateY(-20px);
}

.nav-item.center-fab .fab-bg {
    width: 56px;
    height: 56px;
    background: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
    border-radius: 16px;
    /* Squircle */
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--elevation-2);
}

/* Inputs */
.glass-input {
    width: 100%;
    height: 56px;
    border: 1px solid var(--md-sys-color-outline);
    border-radius: 8px;
    /* M3 text field */
    background: var(--md-sys-color-surface);
    color: white;
    padding: 0 16px;
    font-size: 16px;
}

.glass-input:focus {
    border-color: var(--md-sys-color-primary);
    border-width: 2px;
    outline: none;
}

/* Profile */
.profile-main {
    align-items: center;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 8px;
    background: transparent;
    border: none;
    box-shadow: none;
}

.big-avatar {
    width: 96px;
    height: 96px;
    background: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    font-weight: 700;
}

.id-badge {
    background: var(--md-sys-color-surface-container-high);
    padding: 6px 12px;
    border-radius: 8px;
    font-family: monospace;
    font-size: 12px;
}

/* List Menu */
.list-menu {
    border-radius: var(--radius-l);
    background: var(--md-sys-color-surface-container);
    border: 1px solid var(--md-sys-color-outline-variant);
    overflow: hidden;
}

.list-item {
    height: 56px;
    display: flex;
    align-items: center;
    padding: 0 16px;
    gap: 16px;
    border-bottom: 1px solid var(--md-sys-color-outline-variant);
    color: var(--md-sys-color-on-surface);
    background: none;
    border: none;
    width: 100%;
    position: relative;
    overflow: hidden;
}

.list-item:hover {
    background: rgba(255, 255, 255, 0.05);
}

/* Material Ripple Effect */
.ripple {
    position: absolute;
    border-radius: 50%;
    transform: scale(0);
    animation: ripple 0.6s linear;
    background-color: rgba(255, 255, 255, 0.3);
    pointer-events: none;
}

@keyframes ripple {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* Desktop Sidebar fix */
@media (min-width: 769px) {
    .bottom-nav {
        display: none;
    }

    .app-layout {
        display: flex;
        max-width: 1200px;
    }

    .sidebar {
        display: flex;
        flex-direction: column;
        /* Ensure vertical layout */
        background: var(--md-sys-color-surface-container);
        border-right: 1px solid var(--glass-border);
        width: 280px;
        /* Wider standard drawer */
        padding: 24px;
        gap: 12px;
    }

    .content-area {
        padding-bottom: 0;
    }

    .sidebar .nav-item {
        flex-direction: row;
        width: 100%;
        height: 56px;
        padding: 0 24px;
        border-radius: 28px;
        /* Full pill */
        gap: 12px;
        font-size: 14px;
        font-weight: 500;
        letter-spacing: 0.1px;
        justify-content: flex-start;
    }

    .sidebar .nav-item:hover {
        background: rgba(255, 255, 255, 0.03);
    }

    .sidebar .nav-item.active {
        background: var(--md-sys-color-secondary-container);
        color: var(--md-sys-color-on-secondary-container);
    }

    .sidebar .nav-item svg,
    .sidebar .nav-item.active svg {
        background: transparent;
        padding: 0;
        width: 24px;
        height: 24px;
        box-sizing: border-box;
        border-radius: 0;
    }

    /* Hide FAB background on desktop sidebar if we reuse the same button */
    .sidebar .fab-bg {
        background: transparent;
        width: auto;
        height: auto;
        box-shadow: none;
        display: contents;
        /* Treat children as direct children of button */
    }
}