/* =============================================
   Smart Nursery Dashboard — Fresh Green UI
   Inspired by modern farm/plant app design
   ============================================= */

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

/* --- Google Fonts fallback (served locally via system fonts) --- */
:root {
    /* Brand Green Palette */
    --clr-primary: #1a6b43;
    --clr-primary-dark: #0f4f31;
    --clr-primary-light: #d4edda;
    --clr-primary-dim: #a8d5b5;
    --clr-accent: #4caf82;
    --clr-accent-light: #e8f5ee;

    /* Semantic */
    --clr-secondary: #e67e22;
    --clr-tertiary: #2980b9;
    --clr-error: #c0392b;
    --clr-warning: #f39c12;
    --clr-success: #27ae60;

    /* Surfaces */
    --clr-bg: #f0f7f3;
    --clr-surface: #f0f7f3;
    --clr-surface-low: #e8f2ec;
    --clr-surface-container: #dff0e6;
    --clr-surface-card: #ffffff;
    --clr-surface-high: #c8e6d0;
    --clr-surface-highest: #b8dfc3;

    /* Text */
    --clr-on-surface: #1a2e24;
    --clr-on-surface-var: #4a6b57;
    --clr-outline: #7aad8e;
    --clr-outline-var: #c0ddc9;

    /* Radii */
    --radius-xs: 0.25rem;
    --radius-sm: 0.5rem;
    --radius-md: 0.875rem;
    --radius-lg: 1.25rem;
    --radius-xl: 1.75rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(26, 107, 67, 0.08), 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 16px rgba(26, 107, 67, 0.12), 0 2px 6px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 8px 32px rgba(26, 107, 67, 0.15), 0 4px 12px rgba(0, 0, 0, 0.08);

    --transition: 0.25s ease;
}

/* --- Dark Mode --- */
[data-theme="dark"] {
    --clr-bg: #0d1f15;
    --clr-surface: #0d1f15;
    --clr-surface-low: #132b1c;
    --clr-surface-container: #183525;
    --clr-surface-card: #1a2e20;
    --clr-surface-high: #1f3a28;
    --clr-surface-highest: #264733;

    --clr-on-surface: #d4edda;
    --clr-on-surface-var: #8fc4a2;
    --clr-outline: #4a7a5c;
    --clr-outline-var: #2a4d37;

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
}

/* --- Base Typography --- */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Inter', Helvetica, Arial, sans-serif;
    background-color: var(--clr-bg);
    color: var(--clr-on-surface);
    font-size: 15px;
    line-height: 1.6;
    min-height: 100dvh;
    padding-bottom: 5.5rem;
    transition: background-color var(--transition), color var(--transition);
    overflow-x: hidden;
}

/* --- Scrollbar styling --- */
::-webkit-scrollbar {
    width: 4px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--clr-primary-dim);
    border-radius: var(--radius-full);
}

/* ============================================
   HEADER
   ============================================ */
.app-header {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 1.25rem;
    height: 4.25rem;
    background: var(--clr-primary);
    box-shadow: 0 2px 12px rgba(26, 107, 67, 0.25);
    transition: background-color var(--transition);
}

.app-header-brand {
    display: flex;
    align-items: center;
    gap: 0.625rem;
}

.app-header-brand h1 {
    font-size: 1.1rem;
    font-weight: 700;
    color: #ffffff;
    letter-spacing: -0.01em;
}

.brand-icon {
    width: 1.875rem;
    height: 1.875rem;
    color: #a8ffc8;
    background: rgba(255, 255, 255, 0.15);
    padding: 0.3rem;
    border-radius: var(--radius-sm);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.625rem;
}

.user-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.35rem 0.75rem;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: var(--radius-full);
    color: #ffffff;
    font-size: 0.75rem;
    font-weight: 600;
}

.logout-btn {
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
    border: none;
    padding: 0.25rem 0.6rem;
    border-radius: var(--radius-sm);
    font-size: 0.7rem;
    font-weight: 700;
    cursor: pointer;
    transition: background-color var(--transition);
}

.logout-btn:hover {
    background: rgba(231, 76, 60, 0.8);
}

.theme-btn {
    width: 2.25rem;
    height: 2.25rem;
    border: none;
    background: rgba(255, 255, 255, 0.15);
    cursor: pointer;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    transition: background-color var(--transition);
}

.theme-btn:hover {
    background: rgba(255, 255, 255, 0.25);
}

.theme-btn svg {
    width: 1.125rem;
    height: 1.125rem;
}

.live-badge {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.3rem 0.75rem;
    background: rgba(255, 255, 255, 0.18);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-full);
    font-size: 0.6rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #ffffff;
}

.live-dot {
    position: relative;
    width: 0.5rem;
    height: 0.5rem;
}

.live-dot-inner,
.live-dot-ping {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background-color: #a8ffc8;
}

.live-dot-ping {
    animation: ping 1.5s cubic-bezier(0, 0, 0.2, 1) infinite;
    opacity: 0.7;
}

@keyframes ping {
    75%, 100% {
        transform: scale(2.2);
        opacity: 0;
    }
}

/* ============================================
   MAIN CONTENT & HERO BANNER
   ============================================ */

.hero-banner {
    background: linear-gradient(135deg, var(--clr-primary) 0%, #2d9660 100%);
    border-radius: var(--radius-xl);
    padding: 1.25rem 1.5rem;
    margin-bottom: 1.25rem;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: space-between;
    overflow: hidden;
    position: relative;
    box-shadow: var(--shadow-md);
}

.hero-banner::before {
    content: '';
    position: absolute;
    right: -2rem;
    top: -2rem;
    width: 8rem;
    height: 8rem;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 50%;
}

.hero-banner::after {
    content: '';
    position: absolute;
    right: 2rem;
    bottom: -3rem;
    width: 6rem;
    height: 6rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
}

.hero-text .hero-greeting {
    font-size: 0.75rem;
    font-weight: 600;
    opacity: 0.85;
    letter-spacing: 0.03em;
    margin-bottom: 0.125rem;
}

.hero-text .hero-title {
    font-size: 1.3rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.hero-text .hero-sub {
    font-size: 0.7rem;
    opacity: 0.75;
    margin-top: 0.35rem;
}

/* Audit User Notice Banner */
.user-audit-notice {
    background: var(--clr-accent-light);
    border: 1px solid var(--clr-primary-dim);
    border-radius: var(--radius-md);
    padding: 0.625rem 0.875rem;
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: var(--clr-primary-dark);
    font-weight: 600;
}

.user-audit-notice svg {
    width: 1.1rem;
    height: 1.1rem;
    color: var(--clr-primary);
    flex-shrink: 0;
}

/* ============================================
   SECTION LABELS & HEADERS
   ============================================ */
.section-label {
    font-size: 0.65rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--clr-on-surface-var);
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.section-label::before {
    content: '';
    display: inline-block;
    width: 3px;
    height: 0.9rem;
    background: var(--clr-primary);
    border-radius: var(--radius-full);
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.875rem;
}

.section-title {
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--clr-on-surface);
}

.count-badge {
    font-size: 0.65rem;
    font-weight: 700;
    color: var(--clr-primary);
    background: var(--clr-accent-light);
    padding: 0.2rem 0.6rem;
    border-radius: var(--radius-full);
    border: 1px solid var(--clr-primary-dim);
    cursor: default;
}

/* ============================================
   SENSOR CARDS
   ============================================ */
.sensor-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
    margin-bottom: 1.25rem;
}

@media (min-width: 600px) {
    .sensor-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.sensor-card {
    background: var(--clr-surface-card);
    border-radius: var(--radius-lg);
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--clr-outline-var);
    transition: transform var(--transition), box-shadow var(--transition), background-color var(--transition);
    position: relative;
    overflow: hidden;
}

.sensor-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.sensor-card.temp-card::before {
    background: linear-gradient(90deg, #e74c3c, #e67e22);
}

.sensor-card.light-card::before {
    background: linear-gradient(90deg, #f1c40f, #f39c12);
}

.sensor-card.hum-card::before {
    background: linear-gradient(90deg, #3498db, #2980b9);
}

.sensor-card.soil-card::before {
    background: linear-gradient(90deg, #1a6b43, #4caf82);
}

.sensor-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.sensor-icon-wrap {
    width: 2.25rem;
    height: 2.25rem;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.sensor-icon-wrap svg {
    width: 1.1rem;
    height: 1.1rem;
}

.sensor-icon-wrap.primary {
    background: #fdecea;
    color: #c0392b;
}

.sensor-icon-wrap.secondary {
    background: #fef9e7;
    color: #e67e22;
}

.sensor-icon-wrap.tertiary {
    background: #ebf5fb;
    color: #2980b9;
}

.sensor-icon-wrap.soil {
    background: var(--clr-accent-light);
    color: var(--clr-primary);
}

.sensor-label {
    font-size: 0.58rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--clr-on-surface-var);
    line-height: 1;
}

.sensor-value {
    font-size: 1.5rem;
    font-weight: 800;
    line-height: 1;
    color: var(--clr-on-surface);
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.02em;
}

.sensor-unit {
    font-size: 0.65rem;
    font-weight: 600;
    margin-left: 0.125rem;
    opacity: 0.55;
    vertical-align: super;
}

/* ============================================
   IRRIGATION STATUS BAR
   ============================================ */
.irrigation-bar {
    background: var(--clr-surface-card);
    border-radius: var(--radius-lg);
    padding: 1.125rem 1.25rem;
    margin-bottom: 1.25rem;
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--clr-outline-var);
    transition: background-color var(--transition);
}

.irrigation-info h4 {
    font-size: 0.8rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--clr-on-surface-var);
    margin-bottom: 0.4rem;
}

.irrigation-status-row {
    display: flex;
    align-items: center;
    gap: 0.625rem;
}

.mode-badge {
    font-size: 0.65rem;
    font-weight: 800;
    padding: 0.3rem 0.75rem;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    background: var(--clr-surface-high);
    color: var(--clr-on-surface-var);
    transition: all var(--transition);
}

.mode-badge.active {
    background: var(--clr-accent-light);
    color: var(--clr-primary-dark);
    border: 1px solid var(--clr-primary-dim);
}

.mode-badge.manual {
    background: #fdecea;
    color: #c0392b;
    border: 1px solid #f5c6cb;
}

.mode-badge.schedule {
    background: #eaf0fb;
    color: #1a5276;
    border: 1px solid #c5d9f8;
}

.duration-text {
    font-size: 0.75rem;
    color: var(--clr-on-surface-var);
}

.duration-text strong {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--clr-on-surface);
    font-variant-numeric: tabular-nums;
}

.override-control {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    background: var(--clr-accent-light);
    border: 1px solid var(--clr-primary-dim);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    transition: background-color var(--transition);
}

.override-label-title {
    font-size: 0.65rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--clr-primary);
    margin-bottom: 0.1rem;
}

.override-label-sub {
    font-size: 0.6rem;
    color: var(--clr-on-surface-var);
}

#systemModeSelect {
    padding: 0.5rem 0.75rem !important;
    border-radius: var(--radius-md) !important;
    border: 1.5px solid var(--clr-primary-dim) !important;
    font-family: inherit !important;
    font-weight: 700 !important;
    font-size: 0.8rem !important;
    background: var(--clr-surface-card) !important;
    color: var(--clr-primary) !important;
    cursor: pointer;
    transition: border-color var(--transition);
}

#systemModeSelect:focus {
    outline: none;
    border-color: var(--clr-primary) !important;
}

/* ============================================
   VALVE / ZONE CARDS
   ============================================ */
.valve-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.75rem;
}

@media (min-width: 600px) {
    .valve-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 960px) {
    .valve-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.valve-card {
    background: var(--clr-surface-card);
    border: 1.5px solid var(--clr-outline-var);
    border-radius: var(--radius-lg);
    padding: 1rem 1.125rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.valve-card::after {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--clr-outline-var);
    border-radius: var(--radius-lg) 0 0 var(--radius-lg);
    transition: background-color var(--transition);
}

.valve-card.active-zone::after {
    background: var(--clr-success);
}

.valve-card.manual-zone::after {
    background: var(--clr-error);
}

.valve-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--clr-primary-dim);
}

.valve-card-info {
    flex: 1;
    padding-left: 0.625rem;
}

.valve-name-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.3rem;
}

.valve-name {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--clr-on-surface);
}

.valve-mode-badge {
    font-size: 0.58rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.15rem 0.45rem;
    border-radius: var(--radius-full);
    background: var(--clr-surface-high);
    color: var(--clr-on-surface-var);
    white-space: nowrap;
}

.valve-metrics {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.valve-metric {
    font-size: 0.65rem;
    background: var(--clr-surface-low);
    border-radius: var(--radius-sm);
    padding: 0.15rem 0.4rem;
    color: var(--clr-on-surface-var);
    font-weight: 600;
    border: 1px solid var(--clr-outline-var);
}

.valve-metric span {
    color: var(--clr-on-surface);
    font-weight: 700;
}

.valve-card-toggle {
    flex-shrink: 0;
    margin-left: 0.875rem;
    padding-left: 0.875rem;
    border-left: 1px solid var(--clr-outline-var);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.3rem;
}

.valve-toggle-label {
    font-size: 0.5rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--clr-on-surface-var);
}

/* ============================================
   TOGGLE SWITCH
   ============================================ */
.toggle-wrap {
    position: relative;
    display: inline-flex;
    align-items: center;
    cursor: pointer;
    flex-shrink: 0;
}

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

.toggle-track {
    width: 2.75rem;
    height: 1.5rem;
    background: var(--clr-surface-highest);
    border-radius: var(--radius-full);
    transition: background-color 0.2s;
    position: relative;
    border: 1.5px solid var(--clr-outline-var);
}

.toggle-track::after {
    content: '';
    position: absolute;
    top: 0.17rem;
    left: 0.17rem;
    width: 1.1rem;
    height: 1.1rem;
    background: white;
    border-radius: 50%;
    transition: transform 0.2s;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.toggle-input:checked+.toggle-track {
    background: var(--clr-primary);
    border-color: var(--clr-primary);
}

.toggle-input:checked+.toggle-track::after {
    transform: translateX(1.25rem);
}

/* ============================================
   LAST UPDATE & AUDIT TRAIL TABLE
   ============================================ */
.last-update {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    margin-top: 1.5rem;
    padding: 0.6rem 1rem;
    background: var(--clr-surface-low);
    border-radius: var(--radius-full);
    color: var(--clr-on-surface-var);
    font-size: 0.65rem;
    font-weight: 600;
    border: 1px solid var(--clr-outline-var);
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
}

.last-update svg {
    width: 0.8rem;
    height: 0.8rem;
    opacity: 0.7;
}

.audit-table-card {
    background: var(--clr-surface-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--clr-outline-var);
    padding: 1.125rem;
    margin-top: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.audit-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 0.75rem;
    font-size: 0.78rem;
}

.audit-table th,
.audit-table td {
    padding: 0.6rem 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--clr-outline-var);
}

.audit-table th {
    font-size: 0.65rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--clr-on-surface-var);
    background: var(--clr-surface-low);
}

.audit-table tr:last-child td {
    border-bottom: none;
}

/* ============================================
   AUTH PAGES STYLING (LOGIN & REGISTER)
   ============================================ */
.auth-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    background: linear-gradient(135deg, #0d1f15 0%, #1a6b43 100%);
}

.auth-card {
    width: 100%;
    max-width: 400px;
    background: var(--clr-surface-card);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--clr-outline-var);
}

.auth-header {
    text-align: center;
    margin-bottom: 1.75rem;
}

.auth-logo {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 3.5rem;
    height: 3.5rem;
    background: var(--clr-accent-light);
    color: var(--clr-primary);
    border-radius: var(--radius-lg);
    margin-bottom: 0.75rem;
}

.auth-logo svg {
    width: 2rem;
    height: 2rem;
}

.auth-title {
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--clr-on-surface);
    margin-bottom: 0.25rem;
}

.auth-sub {
    font-size: 0.75rem;
    color: var(--clr-on-surface-var);
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.auth-footer {
    margin-top: 1.25rem;
    text-align: center;
    font-size: 0.78rem;
    color: var(--clr-on-surface-var);
}

.auth-link {
    color: var(--clr-primary);
    font-weight: 700;
    text-decoration: none;
}

.auth-link:hover {
    text-decoration: underline;
}

/* ============================================
   BUTTONS & FORMS
   ============================================ */
.btn-cta {
    width: 100%;
    padding: 0.875rem;
    border-radius: var(--radius-xl);
    font-size: 0.875rem;
    font-weight: 700;
    background: var(--clr-primary);
    color: #fff;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    box-shadow: 0 4px 16px rgba(26, 107, 67, 0.3);
    transition: all var(--transition);
    letter-spacing: 0.02em;
    margin-top: 0.75rem;
}

.btn-cta:hover {
    background: var(--clr-primary-dark);
    transform: translateY(-1px);
}

.form-input {
    padding: 0.6rem 0.875rem;
    border-radius: var(--radius-md);
    border: 1.5px solid var(--clr-outline-var);
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 600;
    background: var(--clr-surface-card);
    color: var(--clr-on-surface);
    transition: border-color 0.2s, box-shadow 0.2s;
    width: 100%;
}

.form-input:focus {
    outline: none;
    border-color: var(--clr-primary);
    box-shadow: 0 0 0 3px rgba(26, 107, 67, 0.12);
}

.form-label {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--clr-on-surface);
    margin-bottom: 0.35rem;
    display: block;
}

/* Dark mode adjustments */
[data-theme="dark"] .form-input,
[data-theme="dark"] #systemModeSelect {
    background: var(--clr-surface-container) !important;
    color: var(--clr-on-surface) !important;
    border-color: var(--clr-outline-var) !important;
}

[data-theme="dark"] .override-control,
[data-theme="dark"] .schedule-zone,
[data-theme="dark"] #manualSettings,
[data-theme="dark"] #scheduleSettings {
    background: var(--clr-surface-container);
}


/* ============================================
   APP SHELL — SIDEBAR + CONTENT LAYOUT
   ============================================ */

.app-shell {
    display: flex;
    min-height: calc(100dvh - 4.25rem);
}

/* ============================================
   SIDEBAR (Desktop Only — ≥768px)
   ============================================ */
.sidebar {
    display: none; /* hidden by default, shown on desktop */
}

@media (min-width: 768px) {
    .sidebar {
        display: flex;
        flex-direction: column;
        justify-content: space-between;
        width: 13rem;
        min-width: 13rem;
        background: var(--clr-surface-card);
        border-right: 1px solid var(--clr-outline-var);
        position: sticky;
        top: 4.25rem;
        height: calc(100dvh - 4.25rem);
        overflow-y: auto;
        padding: 1rem 0.625rem;
        transition: background-color var(--transition);
        flex-shrink: 0;
    }
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.sidebar-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    padding: 0.75rem 0.875rem;
    border-radius: var(--radius-md);
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--clr-on-surface-var);
    font-size: 0.82rem;
    font-weight: 600;
    text-align: left;
    transition: all var(--transition);
    font-family: inherit;
}

.sidebar-item:hover {
    background: var(--clr-surface-low);
    color: var(--clr-on-surface);
}

.sidebar-item.active {
    background: var(--clr-accent-light);
    color: var(--clr-primary-dark);
    font-weight: 700;
}

[data-theme="dark"] .sidebar-item.active {
    background: var(--clr-surface-container);
    color: var(--clr-accent);
}

.sidebar-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 1.75rem;
    height: 1.75rem;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
    transition: background-color var(--transition);
}

.sidebar-item.active .sidebar-icon {
    background: var(--clr-primary);
    color: #ffffff;
}

.sidebar-icon svg {
    width: 1rem;
    height: 1rem;
}

.sidebar-label {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-bottom {
    padding: 0.75rem 0.875rem 0;
    border-top: 1px solid var(--clr-outline-var);
    margin-top: 1rem;
}

.sidebar-version {
    font-size: 0.62rem;
    color: var(--clr-on-surface-var);
    opacity: 0.6;
    font-weight: 600;
    letter-spacing: 0.04em;
}

/* ============================================
   MAIN CONTENT — adapts when sidebar present
   ============================================ */
.main-content {
    flex: 1;
    max-width: 100%;
    padding: 1.25rem 1rem 1rem;
    overflow-x: hidden;
}

@media (min-width: 768px) {
    .main-content {
        max-width: calc(100% - 13rem);
        padding: 1.5rem 1.75rem;
    }

    body {
        /* No bottom padding needed on desktop (no bottom nav) */
        padding-bottom: 0;
    }
}

/* Constrain content width on very wide screens */
@media (min-width: 1200px) {
    .main-content {
        padding: 1.75rem 2.5rem;
    }
}

/* ============================================
   BOTTOM TAB BAR (Mobile Only — <768px)
   ============================================ */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 200;
    display: flex;
    align-items: stretch;
    background: var(--clr-surface-card);
    border-top: 1px solid var(--clr-outline-var);
    box-shadow: 0 -4px 20px rgba(26, 107, 67, 0.1);
    height: 4rem;
    padding-bottom: env(safe-area-inset-bottom, 0);
    transition: background-color var(--transition);
}

@media (min-width: 768px) {
    .bottom-nav {
        display: none; /* hidden on desktop — sidebar takes over */
    }
}

.bottom-nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.2rem;
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--clr-on-surface-var);
    padding: 0.4rem 0.25rem;
    font-family: inherit;
    transition: color var(--transition);
    position: relative;
}

.bottom-nav-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 25%;
    right: 25%;
    height: 2.5px;
    border-radius: 0 0 var(--radius-full) var(--radius-full);
    background: transparent;
    transition: background-color var(--transition);
}

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

.bottom-nav-item.active::before {
    background: var(--clr-primary);
}

.bottom-nav-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 1.6rem;
    height: 1.6rem;
}

.bottom-nav-icon svg {
    width: 1.25rem;
    height: 1.25rem;
    transition: transform var(--transition);
}

.bottom-nav-item.active .bottom-nav-icon svg {
    transform: translateY(-1px);
}

.bottom-nav-label {
    font-size: 0.6rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    line-height: 1;
}

/* ============================================
   TAB PANELS
   ============================================ */
.tab-panel {
    display: none;
    max-width: 56rem;
}

.tab-panel--active {
    display: block;
}

/* ============================================
   DARK MODE — Sidebar & Bottom Nav
   ============================================ */
[data-theme="dark"] .sidebar {
    background: var(--clr-surface-card);
    border-right-color: var(--clr-outline-var);
}

[data-theme="dark"] .bottom-nav {
    background: var(--clr-surface-card);
    border-top-color: var(--clr-outline-var);
}

[data-theme="dark"] .sidebar-item:hover {
    background: var(--clr-surface-low);
}

/* ============================================
   CONFIG TAB COMPONENTS
   ============================================ */

/* Generic card wrapper */
.card {
    background: var(--clr-surface-card);
    border: 1px solid var(--clr-outline-var);
    border-radius: var(--radius-lg);
    padding: 1rem 1.125rem;
    box-shadow: var(--shadow-sm);
    transition: background-color var(--transition), border-color var(--transition);
    margin-bottom: 0.75rem;
}

/* Fuzzy input fields */
.fuzzy-field {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.fuzzy-field label {
    font-size: 0.6rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--clr-on-surface-var);
}

.fz-section-title {
    font-size: 0.8rem;
    font-weight: 800;
    color: var(--clr-primary);
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 0;
    border-bottom: 1.5px solid var(--clr-outline-var);
    margin-bottom: 0.75rem;
}

.fz-section-title svg {
    width: 1rem;
    height: 1rem;
    flex-shrink: 0;
}

/* Config item rows */
.config-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 1rem;
    background: var(--clr-surface-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--clr-outline-var);
    box-shadow: var(--shadow-sm);
    margin-bottom: 0.75rem;
    transition: background-color var(--transition);
}

.config-item-header {
    display: flex;
    align-items: center;
    gap: 0.625rem;
}

.config-icon {
    width: 2.25rem;
    height: 2.25rem;
    min-width: 2.25rem;
    border-radius: var(--radius-sm);
    background: var(--clr-accent-light);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--clr-primary);
    flex-shrink: 0;
}

.config-icon svg {
    width: 1rem;
    height: 1rem;
}

.form-hint {
    font-size: 0.65rem;
    color: var(--clr-on-surface-var);
    margin-top: 0.1rem;
}

.form-row {
    display: flex;
    gap: 0.5rem;
    align-items: flex-end;
}

.form-group {
    flex: 1;
}

/* Btn variants for config page */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    font-size: 0.8rem;
    font-weight: 700;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s;
    letter-spacing: 0.01em;
    font-family: inherit;
}

.btn:active { transform: scale(0.97); }

.btn-primary {
    background: var(--clr-primary);
    color: #ffffff;
    box-shadow: 0 2px 8px rgba(26,107,67,0.3);
    padding: 0.5rem 1rem;
}

.btn-primary:hover { background: var(--clr-primary-dark); }

.btn-secondary {
    background: var(--clr-surface-card);
    color: var(--clr-on-surface);
    border: 1.5px solid var(--clr-outline-var);
    padding: 0.5rem 1rem;
}

.btn-secondary:hover { background: var(--clr-surface-low); border-color: var(--clr-primary-dim); }

.btn-danger {
    background: #fdecea;
    color: #c0392b;
    border: 1.5px solid #f5c6cb;
    padding: 0.5rem 1rem;
}

.btn-danger:hover { background: #fad0cc; }

/* Alert warning */
.alert-warning {
    background: #fef9e7;
    color: #9a6304;
    border: 1px solid #f9e79f;
    border-left: 4px solid var(--clr-warning);
    border-radius: var(--radius-md);
    padding: 0.625rem 0.875rem;
    font-size: 0.75rem;
    font-weight: 700;
}

/* Dark mode for config components */
[data-theme="dark"] .card { background: var(--clr-surface-card); border-color: var(--clr-outline-var); }
[data-theme="dark"] .config-item { background: var(--clr-surface-card); border-color: var(--clr-outline-var); }
[data-theme="dark"] .config-icon { background: var(--clr-surface-container); }
[data-theme="dark"] .btn-secondary { background: var(--clr-surface-container); color: var(--clr-on-surface); border-color: var(--clr-outline-var); }
[data-theme="dark"] .btn-secondary:hover { background: var(--clr-surface-high); }
[data-theme="dark"] .fuzzy-field input { background: var(--clr-surface-container) !important; color: var(--clr-on-surface) !important; border-color: var(--clr-outline-var) !important; }