/* ===================================================================
   FJ_STORE-DASHBOARD — central.fjzippin.com
   Design System: Material Design 3 + HIG (shared with Fujitsu-ZIPPIN)
   =================================================================== */

/* ===== CSS VARIABLES — Light Mode (default) ===== */
:root {
    /* MD3 Primary tonal palette (blue seed) */
    --navy: #1b1b1f;
    --navy-light: #2b2b30;
    --accent: #0061a4;
    --accent-dark: #004a7f;
    --accent-container: #d1e4ff;
    --on-accent-container: #001d36;
    --green: #006d3b;
    --green-bg: rgba(0,109,59,0.08);
    --red: #ba1a1a;
    --red-bg: rgba(186,26,26,0.08);
    --orange: #8b5000;
    --orange-bg: rgba(139,80,0,0.08);
    --cyan: #006876;
    --purple: #6750a4;
    /* MD3 Neutral palette */
    --bg: #f3f4f6;
    --white: #ffffff;
    --surface: #fef7ff;
    --surface-variant: #e7e0ec;
    --gray-50: #f8f9fa;
    --gray-100: #f1f3f4;
    --gray-200: #e2e5e9;
    --gray-300: #c4c7c9;
    --gray-400: #9aa0a6;
    --gray-500: #70757a;
    --gray-600: #5f6368;
    --gray-700: #3c4043;
    --gray-800: #2c2c2e;
    --gray-900: #1b1b1f;
    --outline: #79747e;
    --outline-variant: #c9c5ca;
    /* Layout */
    --sidebar-w: 260px;
    --topbar-h: 56px;
    --radius: 12px;
    --radius-lg: 16px;
    --shadow: 0 1px 2px rgba(0,0,0,0.06), 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 1px 3px rgba(0,0,0,0.08), 0 4px 8px rgba(0,0,0,0.06);
    --shadow-lg: 0 2px 6px rgba(0,0,0,0.1), 0 8px 24px rgba(0,0,0,0.08);
    --mono: 'JetBrains Mono', 'SF Mono', 'Consolas', monospace;
    /* Semantic */
    --card: var(--white);
    --card-bg: var(--white);
    --border: var(--gray-200);
    --muted: var(--gray-500);
    --text: var(--gray-900);
    --fg: var(--gray-900);
    --blue: #1d4ed8;
}

/* ===== RESET ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { overflow-x: hidden; background: var(--bg); }
/* Prevent white flash before body.dark is set by JS */
html.dark { --bg: #020617; color-scheme: dark; }
html.dark .topbar { background: #020617; border-bottom-color: #1e293b; box-shadow: 0 1px 6px rgba(0,0,0,0.3); }
html.dark .sidebar { background: #0a1120; border-right-color: #1e293b; }
html.dark .main { background: #020617; }

/* ===== BODY ===== */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--gray-900);
    height: 100vh;
    overflow: hidden;
    font-size: 14px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    letter-spacing: 0.01em;
    transition: background 0.3s ease, color 0.3s ease;
}

/* Prevent FOUC transitions on initial page load */
body.no-transition *, body.no-transition *::before, body.no-transition *::after {
    transition-duration: 0s !important;
}

/* ===== SELECTION ===== */
::selection {
    background: var(--accent-container);
    color: var(--on-accent-container);
}

/* ===== TOPBAR ===== */
.topbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--topbar-h);
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
    z-index: 100;
}
.topbar-left {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
    overflow: hidden;
}
.topbar img { height: 30px; }
.topbar-title {
    color: var(--gray-500);
    font-size: 0.82rem;
    font-weight: 400;
    border-left: 1px solid var(--gray-200);
    padding-left: 12px;
    transition: color 0.3s ease, border-color 0.3s ease;
}
.topbar-title strong {
    color: var(--gray-900);
    font-weight: 600;
    letter-spacing: 0.01em;
    transition: color 0.3s ease;
}
.topbar-right {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}
.topbar-email {
    color: var(--gray-500);
    font-size: 0.76rem;
    font-family: var(--mono);
    transition: color 0.3s ease;
}

/* Theme toggle */
.theme-toggle {
    background: var(--gray-100);
    color: var(--gray-600);
    border: 1px solid var(--gray-200);
    padding: 5px 8px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 30px;
    font-size: 0.85rem;
}
.theme-toggle:hover { background: var(--gray-200); color: var(--gray-800); }

/* Logout button */
.btn-logout {
    background: var(--gray-100);
    color: var(--gray-600);
    border: 1px solid var(--gray-200);
    padding: 5px 12px;
    border-radius: 6px;
    font-size: 0.72rem;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s ease;
    font-weight: 500;
    height: 30px;
    display: flex;
    align-items: center;
    gap: 4px;
}
.btn-logout:hover { background: var(--gray-200); color: var(--gray-800); }

/* ===== SIDEBAR — MD3 Navigation Drawer ===== */
.sidebar {
    position: fixed;
    top: var(--topbar-h);
    left: 0; bottom: 0;
    width: var(--sidebar-w);
    background: var(--white);
    border-right: 1px solid var(--gray-200);
    padding: 4px 8px;
    overflow-y: auto;
    z-index: 90;
    display: flex;
    flex-direction: column;
    transition: background 0.3s ease, border-color 0.3s ease;
}
.sidebar-section { padding: 0; margin-bottom: 2px; }
.sidebar-label {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--gray-500);
    letter-spacing: 0.03em;
    text-transform: uppercase;
    padding: 10px 16px 4px;
}
.sidebar-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0 16px;
    margin: 0;
    height: 36px;
    border-radius: 6px;
    color: var(--gray-700);
    text-decoration: none;
    font-size: 0.84rem;
    font-weight: 500;
    transition: all 0.2s ease;
    cursor: pointer;
}
.sidebar-link:hover { background: var(--gray-100); }
.sidebar-link.active {
    background: var(--accent-container);
    color: var(--on-accent-container);
    font-weight: 600;
}
.sidebar-link.active .sidebar-icon { opacity: 1; box-shadow: 0 1px 4px rgba(0,0,0,0.2); }
.sidebar-icon {
    font-family: 'Material Symbols Outlined';
    font-size: 16px;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 7px;
    color: #fff;
    background: var(--gray-500);
    font-weight: normal;
    font-style: normal;
    line-height: 1;
    letter-spacing: normal;
    text-transform: none;
    white-space: nowrap;
    word-wrap: normal;
    direction: ltr;
    -webkit-font-smoothing: antialiased;
    flex-shrink: 0;
    font-variation-settings: 'FILL' 1, 'wght' 500, 'GRAD' 0, 'opsz' 20;
    transition: box-shadow 0.2s ease;
    overflow: hidden;
}

/* Sidebar icon colors per page */
[data-page="sites"] .sidebar-icon { background: #0055cc; }
[data-page="clients"] .sidebar-icon { background: #00aa55; }
[data-page="activity"] .sidebar-icon { background: #636366; }
[data-page="settings"] .sidebar-icon { background: #8b5000; }
[data-page="dashboard"] .sidebar-icon { background: #0055cc; }
[data-page="provision"] .sidebar-icon { background: #7c3aed; }
[data-page="devices"] .sidebar-icon { background: #0099aa; }
[data-page="users"] .sidebar-icon { background: #cc4400; }
[data-page="users"] .sidebar-icon { background: #cc4400; }
[data-page="logs"] .sidebar-icon { background: #8e8e93; }

.sidebar-ext {
    font-size: 0.58rem;
    background: var(--gray-100);
    color: var(--gray-500);
    padding: 2px 7px;
    border-radius: 8px;
    margin-left: auto;
    font-weight: 500;
}
.sidebar-link.active .sidebar-ext {
    background: rgba(0,97,164,0.15);
    color: var(--accent);
}
.sidebar-bottom {
    margin-top: auto;
    padding: 8px 0;
    border-top: 1px solid var(--gray-200);
}
.sidebar-dot {
    width: 7px; height: 7px;
    border-radius: 50%;
    flex-shrink: 0;
}
.dot-green { background: var(--green); }
.dot-red { background: var(--red); }
.dot-blue { background: var(--accent); }
.dot-orange { background: var(--orange); }
.dot-purple { background: var(--purple); }
.dot-cyan { background: var(--cyan); }

/* ===== MAIN CONTENT AREA ===== */
.main {
    margin-left: var(--sidebar-w);
    margin-top: var(--topbar-h);
    padding: 1.5rem 2rem;
    height: calc(100vh - var(--topbar-h));
    overflow-y: auto;
    transition: background 0.3s ease;
}

/* ===== PAGES ===== */
.page { display: none; }
.page.active { display: block; animation: fadeIn 0.3s ease; }
.page-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 0.2rem;
    letter-spacing: -0.01em;
    word-break: break-word;
    overflow-wrap: break-word;
}
.page-desc {
    color: var(--muted);
    font-size: 0.8rem;
    margin-bottom: 1.5rem;
    word-break: break-word;
    overflow-wrap: break-word;
}

/* ===== GRID SYSTEM ===== */
.grid { display: grid; gap: 0.75rem; }
.grid-2 { grid-template-columns: 1fr 1fr; }
.grid-3 { grid-template-columns: 1fr 1fr 1fr; }
.grid-4 { grid-template-columns: 1fr 1fr 1fr 1fr; }

/* ===== CARDS ===== */
.card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 1rem 1.2rem;
    box-shadow: var(--shadow);
    transition: box-shadow 0.2s ease, transform 0.2s ease, background 0.3s ease, border-color 0.3s ease;
}
.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px) scale(1.005);
}
.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}
.card-label {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--muted);
    letter-spacing: 0.02em;
}
.card-title {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--gray-900);
}
.card-sub {
    font-size: 0.75rem;
    color: var(--gray-500);
    margin-top: 2px;
    font-family: var(--mono);
}

/* Card stagger animation */
.page.active .card { animation: glassIn 0.35s ease backwards; }
.page.active .card:nth-child(1) { animation-delay: 0.03s; }
.page.active .card:nth-child(2) { animation-delay: 0.06s; }
.page.active .card:nth-child(3) { animation-delay: 0.09s; }
.page.active .card:nth-child(4) { animation-delay: 0.12s; }
.page.active .card:nth-child(5) { animation-delay: 0.15s; }
.page.active .card:nth-child(6) { animation-delay: 0.18s; }

/* ===== STAT CARDS ===== */
.stat-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 1.2rem 1.4rem;
    box-shadow: var(--shadow);
    transition: box-shadow 0.2s ease, transform 0.2s ease, background 0.3s ease, border-color 0.3s ease;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.stat-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}
.stat-value {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--gray-900);
    letter-spacing: -0.02em;
    line-height: 1.1;
    font-variant-numeric: tabular-nums;
}
.stat-label {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--muted);
    letter-spacing: 0.02em;
    text-transform: uppercase;
}
.stat-sub {
    font-size: 0.72rem;
    color: var(--gray-400);
    font-family: var(--mono);
}
.stat-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: #fff;
    margin-bottom: 6px;
}

/* ===== SITE CARDS ===== */
.site-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 1rem 1.2rem;
    box-shadow: var(--shadow);
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.site-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px) scale(1.005);
    border-color: var(--accent);
}
.site-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.site-card-name {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--gray-900);
}
.site-card-city {
    font-size: 0.72rem;
    color: var(--muted);
    margin-top: 1px;
}
.site-card-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.72rem;
    color: var(--gray-500);
}
.site-card-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}
.site-card-rpi-count {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.68rem;
    font-weight: 600;
    color: var(--accent);
    background: var(--accent-container);
    padding: 2px 8px;
    border-radius: 6px;
}
.site-card-sync {
    font-size: 0.68rem;
    color: var(--gray-400);
    font-family: var(--mono);
}

/* ===== BADGES ===== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 0.68rem;
    font-weight: 500;
    padding: 3px 10px;
    border-radius: 8px;
}
.badge-dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    animation: dotPulse 2s ease-in-out infinite;
}
.badge-green { background: var(--green-bg); color: #059669; }
.badge-green .badge-dot { background: #059669; box-shadow: 0 0 6px rgba(5,150,105,0.6); }
.badge-red { background: var(--red-bg); color: var(--red); }
.badge-red .badge-dot { background: var(--red); box-shadow: 0 0 6px rgba(239,68,68,0.6); }
.badge-orange { background: var(--orange-bg); color: #d97706; }
.badge-orange .badge-dot { background: #d97706; box-shadow: 0 0 6px rgba(217,119,6,0.6); }
.badge-gray { background: var(--gray-100); color: var(--gray-500); }
.badge-gray .badge-dot { background: var(--gray-400); animation: pulse 1.5s infinite; }
.badge-blue { background: var(--accent-container); color: var(--on-accent-container); }
.badge-blue .badge-dot { background: var(--accent); box-shadow: 0 0 6px rgba(0,97,164,0.6); }
.badge-purple { background: rgba(103,80,164,0.08); color: var(--purple); }
.badge-purple .badge-dot { background: var(--purple); box-shadow: 0 0 6px rgba(103,80,164,0.6); }

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 20px;
    border-radius: 6px;
    font-size: 0.78rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
    cursor: pointer;
    border: 1px solid var(--border);
    color: var(--gray-700);
    background: var(--gray-100);
    letter-spacing: 0.02em;
    font-family: inherit;
}
.btn:hover { background: var(--gray-200); }
.btn-sm { padding: 6px 14px; font-size: 0.72rem; }
.btn-block { width: 100%; margin-top: 0.6rem; }
.btn-blue { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-blue:hover { background: var(--accent-dark); box-shadow: var(--shadow); }
.btn-green { background: var(--green); color: #fff; border-color: var(--green); }
.btn-green:hover { background: #005a2f; box-shadow: var(--shadow); }
.btn-red { background: var(--red); color: #fff; border-color: var(--red); }
.btn-red:hover { background: #9c1414; box-shadow: var(--shadow); }
.btn-outline {
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    color: var(--gray-700);
}
.btn-outline:hover { background: var(--gray-100); border-color: var(--gray-300); }
.btn-accent { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-accent:hover { background: var(--accent-dark); box-shadow: var(--shadow); }
.btn-danger-outline {
    background: transparent;
    border: 1px solid var(--red);
    color: var(--red);
}
.btn-danger-outline:hover { background: var(--red-bg); }
.btn.disabled, .btn:disabled { opacity: 0.38; pointer-events: none; }
.btn .spinner {
    width: 14px; height: 14px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

/* ===== TABLES ===== */
.ref-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.78rem;
}
.ref-table th {
    background: transparent;
    color: var(--gray-600);
    font-weight: 500;
    font-size: 0.72rem;
    letter-spacing: 0.02em;
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}
.ref-table td {
    padding: 7px 12px;
    border-bottom: 1px solid var(--gray-100);
    color: var(--gray-700);
}
.ref-table tr:hover td { background: var(--gray-50); }
.ref-table code {
    font-family: var(--mono);
    font-size: 0.72rem;
    background: var(--gray-100);
    padding: 1px 6px;
    border-radius: 3px;
}

/* ===== FORMS ===== */
input[type="text"],
input[type="email"],
input[type="password"],
input[type="search"],
input[type="url"],
input[type="number"],
.input {
    font-family: inherit;
    font-size: 0.78rem;
    padding: 8px 12px;
    border: 1px solid var(--gray-200);
    border-radius: 6px;
    background: var(--white);
    color: var(--gray-900);
    outline: none;
    transition: all 0.2s ease;
    width: 100%;
}
input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="search"]:focus,
input[type="url"]:focus,
input[type="number"]:focus,
.input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(0,97,164,0.12);
}
input::placeholder, .input::placeholder {
    color: var(--gray-400);
}

select {
    font-family: inherit;
    font-size: 0.75rem;
    padding: 6px 12px;
    border: 1px solid var(--outline-variant);
    border-radius: 6px;
    background: var(--white);
    color: var(--gray-700);
    outline: none;
    cursor: pointer;
    transition: all 0.2s ease;
    -webkit-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2370757a' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 8px center;
    padding-right: 28px;
}
select:hover { border-color: var(--outline); }
select:focus { border-color: var(--accent); box-shadow: 0 0 0 2px rgba(0,97,164,0.12); }

textarea {
    font-family: inherit;
    font-size: 0.78rem;
    padding: 8px 12px;
    border: 1px solid var(--gray-200);
    border-radius: 6px;
    background: var(--white);
    color: var(--gray-900);
    outline: none;
    transition: all 0.2s ease;
    resize: vertical;
    min-height: 80px;
    width: 100%;
}
textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(0,97,164,0.12);
}
textarea::placeholder { color: var(--gray-400); }

label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--gray-700);
    display: block;
    margin-bottom: 4px;
}
.form-group {
    margin-bottom: 0.75rem;
}
.form-hint {
    font-size: 0.68rem;
    color: var(--gray-400);
    margin-top: 3px;
}
.form-error {
    font-size: 0.68rem;
    color: var(--red);
    margin-top: 3px;
}

/* ===== SECTION TITLES ===== */
.section { margin-bottom: 1.5rem; }
.section-title {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 0.6rem;
    display: flex;
    align-items: center;
    gap: 6px;
    letter-spacing: 0.03em;
}
.section-title::before {
    content: '';
    width: 3px;
    height: 14px;
    background: var(--accent);
    border-radius: 2px;
}

/* ===== CALLOUTS ===== */
.callout {
    padding: 12px 16px;
    border-radius: var(--radius);
    font-size: 0.78rem;
    margin: 0.5rem 0;
    display: flex;
    gap: 10px;
    align-items: flex-start;
}
.callout-icon { flex-shrink: 0; font-size: 0.9rem; }
.callout-red { background: #fce8e6; color: #5f2120; border-left: 4px solid #ef4444; }
.callout-orange { background: #fef7e0; color: #594300; border-left: 4px solid #f59e0b; }
.callout-green { background: #e6f4ea; color: #0d652d; border-left: 4px solid var(--green); }
.callout-blue { background: var(--accent-container); color: var(--on-accent-container); border-left: 4px solid var(--accent); }

/* ===== TOAST NOTIFICATIONS ===== */
.toast-container {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 10000;
    display: flex;
    flex-direction: column-reverse;
    gap: 0.75rem;
    pointer-events: none;
    max-width: 400px;
}
.toast {
    background: var(--white);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15), 0 0 0 1px rgba(0,0,0,0.05);
    padding: 1rem;
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    pointer-events: all;
    cursor: pointer;
    transition: all 0.2s ease;
    animation: slideIn 0.3s ease;
    min-width: 320px;
    border-left: 4px solid transparent;
}
.toast:hover {
    box-shadow: 0 6px 16px rgba(0,0,0,0.2), 0 0 0 1px rgba(0,0,0,0.08);
    transform: translateY(-2px);
}
.toast.success { border-left-color: var(--green); }
.toast.error { border-left-color: var(--red); }
.toast.warning { border-left-color: var(--orange); }
.toast.info { border-left-color: var(--blue); }
.toast.toast-dismissing {
    animation: slideOut 0.3s ease forwards;
}
.toast-icon {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}
.toast-icon span { font-size: 20px; }
.toast.success .toast-icon { background: rgba(0,109,59,0.1); color: var(--green); }
.toast.error .toast-icon { background: rgba(186,26,26,0.1); color: var(--red); }
.toast.warning .toast-icon { background: rgba(139,80,0,0.1); color: var(--orange); }
.toast.info .toast-icon { background: rgba(59,130,246,0.1); color: var(--blue); }
.toast-content { flex: 1; min-width: 0; }
.toast-title {
    font-weight: 600;
    font-size: 0.875rem;
    margin-bottom: 0.25rem;
    color: var(--fg);
}
.toast.error .toast-title { color: var(--red); }
.toast.warning .toast-title { color: var(--orange); }
.toast-message {
    font-size: 0.8125rem;
    color: var(--muted);
    line-height: 1.4;
    word-wrap: break-word;
}
.toast-close {
    flex-shrink: 0;
    background: none;
    border: none;
    color: var(--muted);
    cursor: pointer;
    padding: 0;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all 0.15s ease;
    font-size: 1rem;
}
.toast-close:hover {
    background: rgba(0,0,0,0.05);
    color: var(--fg);
}

/* ===== MODAL ===== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
}
.modal-overlay.open {
    display: flex;
    animation: fadeIn 0.15s ease;
}
.modal {
    background: var(--white);
    border-radius: var(--radius-lg);
    width: 600px;
    max-width: 92vw;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-lg);
    animation: modalIn 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.85rem 1.25rem;
    border-bottom: 1px solid var(--gray-200);
}
.modal-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--gray-900);
    margin: 0;
}
.modal-close {
    background: none;
    border: none;
    font-size: 1.3rem;
    color: var(--gray-400);
    cursor: pointer;
    padding: 0 4px;
    line-height: 1;
    transition: color 0.2s;
    border-radius: 6px;
}
.modal-close:hover { color: var(--gray-700); background: var(--gray-100); }
.modal-body {
    padding: 1rem 1.25rem;
    overflow-y: auto;
    flex: 1;
}
.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
    padding: 0.65rem 1.25rem;
    border-top: 1px solid var(--gray-200);
}

/* ===== PROVISION CODE DISPLAY ===== */
.provision-code {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 1.5rem 2rem;
    border: 2px dashed var(--gray-300);
    border-radius: var(--radius-lg);
    background: var(--gray-50);
    font-family: var(--mono);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--gray-900);
    letter-spacing: 0.12em;
    text-align: center;
    user-select: all;
    transition: all 0.2s ease;
}
.provision-code:hover {
    border-color: var(--accent);
    background: var(--accent-container);
}
.provision-code .copy-btn {
    background: var(--gray-100);
    border: 1px solid var(--gray-200);
    border-radius: 6px;
    padding: 6px 10px;
    cursor: pointer;
    color: var(--gray-600);
    font-size: 0.72rem;
    font-family: inherit;
    font-weight: 500;
    transition: all 0.2s ease;
    user-select: none;
}
.provision-code .copy-btn:hover {
    background: var(--gray-200);
    color: var(--gray-800);
}
.provision-code .copy-btn.copied {
    background: var(--green-bg);
    border-color: var(--green);
    color: var(--green);
}

/* ===== EMPTY STATE ===== */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 48px 24px;
    color: var(--gray-400);
    text-align: center;
}
.empty-state-icon {
    font-size: 2.5rem;
    opacity: 0.5;
    margin-bottom: 4px;
}
.empty-state-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--gray-600);
}
.empty-state-text {
    font-size: 0.78rem;
    color: var(--gray-400);
    max-width: 320px;
    line-height: 1.5;
}

/* ===== SKELETON LOADERS ===== */
.skeleton {
    background: linear-gradient(90deg, var(--gray-100) 25%, var(--gray-200) 50%, var(--gray-100) 75%);
    background-size: 200% 100%;
    animation: skeleton-shimmer 1.5s ease-in-out infinite;
    border-radius: 6px;
}
.skeleton-text {
    height: 14px;
    margin-bottom: 8px;
    border-radius: 4px;
}
.skeleton-text.short { width: 40%; }
.skeleton-text.medium { width: 70%; }
.skeleton-title {
    height: 20px;
    width: 50%;
    margin-bottom: 12px;
    border-radius: 4px;
}
.skeleton-card {
    height: 120px;
    border-radius: var(--radius-lg);
}
.skeleton-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
}
.skeleton-badge {
    width: 60px;
    height: 22px;
    border-radius: 8px;
}

/* ===== PAGE HEADER ===== */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}
.page-header > div { min-width: 0; flex: 1; }
.page-header .page-title { margin-bottom: 0.1rem; }
.page-header .page-desc { margin-bottom: 0; }
.page-header > .btn { flex-shrink: 0; }
.page-header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

/* ===== BACK LINK ===== */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--accent);
    text-decoration: none;
    margin-bottom: 6px;
    transition: color 0.2s ease;
}
.back-link:hover { color: var(--accent-dark); }

/* ===== INFO ROWS ===== */
.info-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid var(--gray-100);
    font-size: 0.78rem;
    gap: 12px;
}
.info-row:last-child { border-bottom: none; }
.info-label {
    color: var(--muted);
    font-weight: 500;
    font-size: 0.72rem;
    flex-shrink: 0;
    min-width: 80px;
}
.info-value {
    color: var(--gray-900);
    font-weight: 500;
    text-align: right;
    word-break: break-all;
}
.info-value.mono, .mono {
    font-family: var(--mono);
    font-size: 0.72rem;
}

/* ===== PROVISION BLOCK ===== */
.provision-block {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.provision-label {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--muted);
    letter-spacing: 0.02em;
}
.provision-status {
    margin-top: 4px;
}
.mt-05 { margin-top: 0.25rem; }

/* ===== SITE CARD PARTS (JS-rendered) ===== */
.site-card-client {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.72rem;
    font-weight: 500;
    color: var(--accent);
}
.site-card-location {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.72rem;
    color: var(--muted);
}
.site-card-footer {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 4px;
}
.site-card-pending {
    font-size: 0.68rem;
    font-weight: 500;
    color: var(--orange);
    background: var(--orange-bg);
    padding: 3px 10px;
    border-radius: 6px;
    margin-top: 2px;
    display: inline-block;
}

/* ===== CONNECTOR CARDS ===== */
.connector-card {
    cursor: pointer;
    transition: opacity 0.2s ease, border-color 0.2s ease;
}
.connector-card:hover {
    border-color: var(--accent);
}
.connector-disabled {
    opacity: 0.6;
}
.connector-status {
    margin-top: 4px;
}

/* ===== TOGGLE SWITCH ===== */
.toggle-switch {
    position: relative;
    display: inline-block;
    width: 36px;
    height: 20px;
    flex-shrink: 0;
}
.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}
.toggle-slider {
    position: absolute;
    cursor: pointer;
    inset: 0;
    background: var(--gray-300);
    border-radius: 20px;
    transition: background 0.2s ease;
}
.toggle-slider::before {
    content: '';
    position: absolute;
    width: 14px;
    height: 14px;
    left: 3px;
    bottom: 3px;
    background: var(--white);
    border-radius: 50%;
    transition: transform 0.2s ease;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}
.toggle-switch input:checked + .toggle-slider {
    background: var(--green);
}
.toggle-switch input:checked + .toggle-slider::before {
    transform: translateX(16px);
}

/* ===== EMPTY STATE INLINE ===== */
.empty-state-inline {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 16px;
    color: var(--gray-400);
    font-size: 0.78rem;
}

/* ===== MUTED TEXT ===== */
.muted-text {
    color: var(--muted);
    font-style: italic;
    font-size: 0.78rem;
}

/* ===== FORM INPUT (modal forms) ===== */
.form-input {
    font-family: inherit;
    font-size: 0.78rem;
    padding: 8px 12px;
    border: 1px solid var(--gray-200);
    border-radius: 6px;
    background: var(--white);
    color: var(--gray-900);
    outline: none;
    transition: all 0.2s ease;
    width: 100%;
}
.form-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(0,97,164,0.12);
}
.form-input::placeholder { color: var(--gray-400); }
.form-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--gray-700);
    display: block;
    margin-bottom: 4px;
}

/* ===== SIDEBAR FOOTER ===== */
.sidebar-footer {
    margin-top: auto;
    padding: 12px 16px;
    border-top: 1px solid var(--gray-200);
}
.sidebar-version {
    font-size: 0.65rem;
    color: var(--gray-400);
    font-family: var(--mono);
}

/* ===== CODE BLOCK ===== */
.cmd-block {
    background: var(--gray-900);
    color: #e2e8f0;
    padding: 12px 16px;
    border-radius: var(--radius);
    font-family: var(--mono);
    font-size: 0.72rem;
    line-height: 1.6;
    overflow-x: auto;
    margin: 0.4rem 0;
    position: relative;
}
.cmd-block .prompt { color: #6dd58c; }
.cmd-block .comment { color: #938f99; }

/* ===== HAMBURGER MENU (mobile) ===== */
.hamburger {
    display: none;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--gray-600);
    width: 40px;
    height: 40px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all 0.2s ease;
}
.hamburger:hover { background: var(--gray-100); color: var(--gray-800); }
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.32);
    z-index: 89;
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
}
.sidebar-overlay.open { display: block; }

/* ===== KEYFRAME ANIMATIONS ===== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
@keyframes glassIn {
    from { opacity: 0; transform: translateY(8px) scale(0.98); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes dotPulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.3); opacity: 0.7; }
}
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}
@keyframes skeleton-shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}
@keyframes slideIn {
    from { opacity: 0; transform: translateX(100%); }
    to { opacity: 1; transform: translateX(0); }
}
@keyframes slideOut {
    from { opacity: 1; transform: translateX(0); }
    to { opacity: 0; transform: translateX(100%); }
}
@keyframes modalIn {
    from { opacity: 0; transform: scale(0.92); }
    to { opacity: 1; transform: scale(1); }
}
@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--gray-300); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--gray-400); }
* { scrollbar-width: thin; scrollbar-color: var(--gray-300) transparent; }


/* ===========================================================
   DARK MODE — body.dark
   =========================================================== */
body.dark {
    --bg: #020617;
    --white: #1e293b;
    --surface: #1e293b;
    --surface-variant: #334155;
    --gray-50: #111827;
    --gray-100: #1e293b;
    --gray-200: #334155;
    --gray-300: #475569;
    --gray-400: #64748b;
    --gray-500: #94a3b8;
    --gray-600: #e2e8f0;
    --gray-700: #f1f5f9;
    --gray-800: #f8fafc;
    --gray-900: #ffffff;
    --accent: #93c5fd;
    --accent-dark: #bfdbfe;
    --accent-container: #1e40af;
    --on-accent-container: #dbeafe;
    --green: #6ee7b7;
    --green-bg: rgba(16,185,129,0.18);
    --red: #fca5a5;
    --red-bg: rgba(239,68,68,0.18);
    --orange: #fcd34d;
    --orange-bg: rgba(245,158,11,0.18);
    --outline: #7083a0;
    --outline-variant: #526380;
    --card: #1e293b;
    --card-bg: #1e293b;
    --border: #3b4f6a;
    --muted: #94a3b8;
    --text: #ffffff;
    --fg: #ffffff;
    --blue: #60a5fa;
    --shadow: 0 1px 4px rgba(0,0,0,0.5);
    --shadow-md: 0 2px 10px rgba(0,0,0,0.6);
    --shadow-lg: 0 4px 20px rgba(0,0,0,0.7);
    color-scheme: dark;
}

/* Topbar dark */
body.dark .topbar { background: #020617; border-bottom: 1px solid #1e293b; box-shadow: 0 1px 6px rgba(0,0,0,0.3); }
body.dark .topbar-title { color: rgba(255,255,255,0.65); border-left-color: rgba(255,255,255,0.18); }
body.dark .topbar-title strong { color: #fff; }
body.dark .topbar-email { color: rgba(255,255,255,0.65); }
body.dark .btn-logout { background: rgba(255,255,255,0.1); color: rgba(255,255,255,0.75); border-color: rgba(255,255,255,0.15); }
body.dark .btn-logout:hover { background: rgba(255,255,255,0.18); color: #fff; }
body.dark .theme-toggle { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.15); color: rgba(255,255,255,0.75); }
body.dark .theme-toggle:hover { background: rgba(255,255,255,0.18); color: #fff; }

/* Sidebar dark */
body.dark .sidebar { background: #0a1120; border-right-color: var(--border); }
body.dark .sidebar-link:hover { background: rgba(255,255,255,0.08); }
body.dark .sidebar-link.active { background: var(--accent-container); color: var(--on-accent-container); }
body.dark .sidebar-link.active .sidebar-icon { color: var(--on-accent-container); }
body.dark .sidebar-ext { background: rgba(255,255,255,0.06); color: var(--muted); }
body.dark .sidebar-link.active .sidebar-ext { background: rgba(209,228,255,0.15); color: var(--on-accent-container); }
body.dark .sidebar-bottom { border-top-color: var(--border); }

/* Cards dark */
body.dark .card { background: #1e293b; border-color: var(--border); box-shadow: 0 1px 4px rgba(0,0,0,0.4); }
body.dark .card:hover { border-color: var(--outline-variant); box-shadow: 0 4px 12px rgba(0,0,0,0.5); }
body.dark .stat-card { background: #1e293b; border-color: var(--border); box-shadow: 0 1px 4px rgba(0,0,0,0.4); }
body.dark .stat-card:hover { box-shadow: 0 4px 12px rgba(0,0,0,0.5); }
body.dark .site-card { background: #1e293b; border-color: var(--border); box-shadow: 0 1px 4px rgba(0,0,0,0.4); }
body.dark .site-card:hover { border-color: var(--accent); box-shadow: 0 4px 12px rgba(0,0,0,0.5); }
body.dark .site-card-rpi-count { background: var(--accent-container); color: var(--on-accent-container); }

/* Badges dark */
body.dark .badge-green { background: rgba(109,213,140,0.18); color: var(--green); }
body.dark .badge-green .badge-dot { background: var(--green); }
body.dark .badge-red { background: rgba(255,180,171,0.18); color: var(--red); }
body.dark .badge-red .badge-dot { background: var(--red); }
body.dark .badge-orange { background: rgba(255,184,107,0.18); color: var(--orange); }
body.dark .badge-orange .badge-dot { background: var(--orange); }
body.dark .badge-gray { background: rgba(255,255,255,0.1); color: var(--gray-500); }
body.dark .badge-gray .badge-dot { background: var(--gray-400); }
body.dark .badge-blue { background: var(--accent-container); color: var(--on-accent-container); }
body.dark .badge-purple { background: rgba(147,130,220,0.18); color: #c4b5fd; }

/* Buttons dark */
body.dark .btn-blue { background: var(--accent); color: #0f172a; }
body.dark .btn-blue:hover { background: var(--accent-dark); }
body.dark .btn-green { background: var(--green); color: #0f172a; }
body.dark .btn-green:hover { background: #a7f3d0; }
body.dark .btn-red { background: var(--red); color: #0f172a; }
body.dark .btn-red:hover { background: #fecaca; }
body.dark .btn-outline { background: var(--gray-200); border-color: var(--gray-300); color: var(--gray-600); }
body.dark .btn-outline:hover { border-color: var(--gray-400); color: var(--gray-700); background: var(--gray-300); }
body.dark .btn-accent { background: var(--accent); color: #0f172a; }
body.dark .btn-accent:hover { background: var(--accent-dark); }
body.dark .btn-danger-outline { background: rgba(239,68,68,0.12); border-color: var(--red); color: var(--red); }
body.dark .btn-danger-outline:hover { background: rgba(239,68,68,0.25); }
body.dark .btn.disabled { opacity: 0.38; }

/* Tables dark */
body.dark .ref-table th { background: transparent; color: var(--gray-500); border-bottom-color: var(--border); }
body.dark .ref-table td { border-bottom-color: var(--gray-200); }
body.dark .ref-table tr:hover td { background: rgba(255,255,255,0.06); }
body.dark .ref-table code { background: var(--gray-200); color: var(--gray-700); }

/* Forms dark */
body.dark input[type="text"],
body.dark input[type="email"],
body.dark input[type="password"],
body.dark input[type="search"],
body.dark input[type="url"],
body.dark input[type="number"],
body.dark .input {
    background: var(--gray-100);
    border-color: var(--border);
    color: var(--gray-900);
}
body.dark input[type="text"]:focus,
body.dark input[type="email"]:focus,
body.dark input[type="password"]:focus,
body.dark input[type="search"]:focus,
body.dark input[type="url"]:focus,
body.dark input[type="number"]:focus,
body.dark .input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(168,200,255,0.15);
}
body.dark input::placeholder, body.dark .input::placeholder { color: var(--gray-400); }
body.dark select {
    background-color: var(--gray-100);
    color: var(--gray-700);
    border-color: var(--outline-variant);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23a09daa' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
}
body.dark select:hover { border-color: var(--outline); }
body.dark select:focus { border-color: var(--accent); box-shadow: 0 0 0 2px rgba(168,200,255,0.15); }
body.dark textarea {
    background: var(--gray-100);
    border-color: var(--border);
    color: var(--gray-900);
}
body.dark textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(168,200,255,0.15);
}
body.dark textarea::placeholder { color: var(--gray-400); }
body.dark label { color: var(--gray-600); }

/* Callouts dark */
body.dark .callout-red { background: rgba(255,180,171,0.12); color: var(--red); border-left: 4px solid var(--red); }
body.dark .callout-orange { background: rgba(255,184,107,0.12); color: var(--orange); border-left: 4px solid var(--orange); }
body.dark .callout-green { background: rgba(109,213,140,0.12); color: var(--green); border-left: 4px solid var(--green); }
body.dark .callout-blue { background: var(--accent-container); color: var(--on-accent-container); border-left: 4px solid var(--accent); }

/* Toast dark */
body.dark .toast { background: #1e293b; box-shadow: 0 4px 12px rgba(0,0,0,0.4), 0 0 0 1px rgba(255,255,255,0.05); }
body.dark .toast:hover { box-shadow: 0 6px 16px rgba(0,0,0,0.5), 0 0 0 1px rgba(255,255,255,0.08); }
body.dark .toast-close:hover { background: rgba(255,255,255,0.1); }
body.dark .toast.error .toast-icon { background: rgba(239,68,68,0.15); }
body.dark .toast.warning .toast-icon { background: rgba(245,158,11,0.15); }
body.dark .toast.info .toast-icon { background: rgba(59,130,246,0.15); }
body.dark .toast.success .toast-icon { background: rgba(16,185,129,0.15); }

/* Modal dark */
body.dark .modal { background: var(--bg); border: 1px solid var(--border); }
body.dark .modal-header { border-bottom-color: var(--border); }
body.dark .modal-footer { border-top-color: var(--border); }
body.dark .modal-title { color: var(--gray-900); }
body.dark .modal-close:hover { background: rgba(255,255,255,0.1); color: #fff; }

/* Provision code dark */
body.dark .provision-code {
    border-color: var(--gray-300);
    background: var(--gray-100);
}
body.dark .provision-code:hover {
    border-color: var(--accent);
    background: var(--accent-container);
}
body.dark .provision-code .copy-btn {
    background: var(--gray-200);
    border-color: var(--gray-300);
    color: var(--gray-600);
}
body.dark .provision-code .copy-btn:hover { background: var(--gray-300); }

/* Empty state dark */
body.dark .empty-state-title { color: var(--gray-600); }

/* Info rows dark */
body.dark .info-row { border-bottom-color: var(--gray-200); }
body.dark .info-label { color: var(--muted); }

/* Form inputs dark (modals) */
body.dark .form-input {
    background: var(--gray-100);
    border-color: var(--border);
    color: var(--gray-900);
}
body.dark .form-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(168,200,255,0.15);
}
body.dark .form-input::placeholder { color: var(--gray-400); }
body.dark .form-label { color: var(--gray-600); }

/* Sidebar footer dark */
body.dark .sidebar-footer { border-top-color: var(--border); }
body.dark .sidebar-version { color: var(--gray-400); }

/* Back link dark */
body.dark .back-link { color: var(--accent); }
body.dark .back-link:hover { color: var(--accent-dark); }

/* Muted text dark */
body.dark .muted-text { color: var(--muted); }

/* Site card pending dark */
body.dark .site-card-pending { background: var(--orange-bg); color: var(--orange); }

/* Provision code in dark */
body.dark .provision-label { color: var(--muted); }

/* Code block dark */
body.dark .cmd-block { background: #020617; }

/* Skeleton dark */
body.dark .skeleton {
    background: linear-gradient(90deg, var(--gray-100) 25%, var(--gray-200) 50%, var(--gray-100) 75%);
    background-size: 200% 100%;
}

/* Hamburger dark */
body.dark .hamburger { color: rgba(255,255,255,0.8); }
body.dark .hamburger:hover { background: rgba(255,255,255,0.14); color: #fff; }


/* ===========================================================
   RESPONSIVE — MD3 Adaptive Layout
   =========================================================== */

/* Tablet & below */
@media (max-width: 900px) {
    .hamburger { display: flex; }
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 91;
        box-shadow: none;
    }
    .sidebar.open {
        transform: translateX(0);
        display: flex;
        box-shadow: var(--shadow-lg);
    }
    .main {
        margin-left: 0;
        padding: 1rem;
        max-width: 100vw;
        overflow-x: hidden;
    }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .topbar-email { display: none; }
    .sidebar-link { padding: 10px 16px; min-height: 44px; }
    .btn { min-height: 44px; }
    .btn-sm { min-height: 36px; }
    .ref-table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }
    .page-title { font-size: 1.1rem; }
    /* Topbar compact */
    .topbar { padding: 0 12px; }
    .topbar-left { gap: 8px; min-width: 0; }
    .topbar-title { display: none; }
    .topbar img { height: 24px; }
    .topbar-right { gap: 6px; }
    .btn-logout { font-size: 0.65rem; padding: 4px 10px; }
    /* Toast responsive */
    .toast-container {
        bottom: 0.5rem;
        right: 0.5rem;
        left: auto;
        max-width: calc(100vw - 1rem);
        gap: 0.5rem;
    }
    .toast { min-width: 0; max-width: 100%; padding: 0.75rem; gap: 0.5rem; }
    .toast-icon { width: 28px; height: 28px; }
    .toast-icon span { font-size: 18px; }
    .toast-title { font-size: 0.8125rem; }
    .toast-message { font-size: 0.75rem; line-height: 1.3; }
    /* Modal responsive */
    .modal { width: 95vw; max-height: 90vh; }
}

/* Smaller tablets */
@media (max-width: 600px) {
    .topbar { padding: 0 8px; }
    .topbar-right { gap: 4px; }
    .btn-logout .logout-text { display: none; }
    .btn-logout .logout-icon { display: inline-flex !important; }
    .btn-logout { padding: 4px 6px; }
    .theme-toggle { padding: 4px; }
}

/* Phone-specific */
@media (max-width: 480px) {
    .main { padding: 0.75rem; }
    .page-title { font-size: 1rem; }
    .page-desc { font-size: 0.75rem; margin-bottom: 1rem; }
    .section-title { font-size: 0.78rem; }
    .card { padding: 0.75rem; }
    .card-title { font-size: 0.85rem; }
    .stat-value { font-size: 1.4rem; }
    .badge { font-size: 0.6rem; padding: 3px 8px; }
    .btn-block { font-size: 0.75rem; padding: 8px; }
    .grid { gap: 0.5rem; }
    .callout { font-size: 0.78rem; padding: 0.6rem 0.75rem; }
    .provision-code { font-size: 1.25rem; padding: 1rem 1.25rem; }
}

/* Medium desktop */
@media (min-width: 901px) and (max-width: 1200px) {
    .grid-3 { grid-template-columns: 1fr 1fr; }
    .grid-4 { grid-template-columns: 1fr 1fr; }
}


/* ===========================================================
   UTILITY CLASSES
   =========================================================== */

/* Flex */
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-col { display: flex; flex-direction: column; }
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }

/* Text */
.text-muted { color: var(--muted); }
.text-accent { color: var(--accent); }
.text-green { color: var(--green); }
.text-red { color: var(--red); }
.text-orange { color: var(--orange); }
.text-sm { font-size: 0.75rem; }
.text-xs { font-size: 0.68rem; }
.text-mono { font-family: var(--mono); }
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }

/* Spacing */
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }

/* Visibility */
.hidden { display: none !important; }
.sr-only {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border-width: 0;
}

/* Truncate */
.truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Material Symbols base (prevent FOUT) */
.material-symbols-outlined {
    overflow: hidden;
    display: inline-block;
    width: 1em;
    height: 1em;
    line-height: 1;
    vertical-align: middle;
}
.sidebar-link .sidebar-icon {
    width: 28px;
    height: 28px;
    display: flex;
    overflow: hidden;
}