@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;500;600;700;800&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;1,9..40,300&display=swap');

/* ===== CSS VARIABLES ===== */
:root {
    --bg-primary: #0d0f14;
    --bg-secondary: #13161e;
    --bg-card: #191d27;
    --bg-card-hover: #1e2330;
    --sidebar-bg: #0a0c10;
    --sidebar-width: 260px;

    --accent: #6c63ff;
    --accent-hover: #7b74ff;
    --accent-soft: rgba(108, 99, 255, 0.12);
    --accent-glow: rgba(108, 99, 255, 0.3);

    --green: #22d3a0;
    --green-soft: rgba(34, 211, 160, 0.12);
    --blue: #38bdf8;
    --blue-soft: rgba(56, 189, 248, 0.12);
    --amber: #fbbf24;
    --amber-soft: rgba(251, 191, 36, 0.12);
    --rose: #fb7185;
    --rose-soft: rgba(251, 113, 133, 0.12);

    --text-primary: #f0f2f8;
    --text-secondary: #8b93a7;
    --text-muted: #555e72;

    --border: rgba(255, 255, 255, 0.06);
    --border-strong: rgba(255, 255, 255, 0.1);

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.6);
    --shadow-accent: 0 8px 32px rgba(108, 99, 255, 0.25);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;

    --topbar-h: 64px;
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* LIGHT MODE */
body.light-mode {
    --bg-primary: #f0f2f8;
    --bg-secondary: #e8eaf2;
    --bg-card: #ffffff;
    --bg-card-hover: #f5f7ff;
    --sidebar-bg: #1a1d2e;

    --text-primary: #1a1d2e;
    --text-secondary: #4b526e;
    --text-muted: #9399b2;

    --border: rgba(0, 0, 0, 0.07);
    --border-strong: rgba(0, 0, 0, 0.12);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);
}

/* ===== RESET & BASE ===== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'DM Sans', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    transition: background 0.3s ease, color 0.3s ease;
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

button {
    cursor: pointer;
    border: none;
    font-family: inherit;
}

input,
select,
textarea {
    font-family: inherit;
}

img {
    max-width: 100%;
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
    width: 5px;
    height: 5px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border-strong);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent);
}

/* ===== LAYOUT ===== */
.layout {
    display: flex;
    min-height: 100vh;
}

/* ===== SIDEBAR ===== */
.sidebar {
    width: var(--sidebar-width);
    background: var(--sidebar-bg);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 100;
    transition: var(--transition-slow);
    overflow: hidden;
}

.sidebar-logo {
    padding: 24px 20px 20px;
    border-bottom: 1px solid var(--border);
}

.logo-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 38px;
    height: 38px;
    background: linear-gradient(135deg, var(--accent), #a78bfa);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    box-shadow: var(--shadow-accent);
    flex-shrink: 0;
}

.logo-text {
    font-family: 'Syne', sans-serif;
    font-weight: 700;
    font-size: 15px;
    color: #fff;
    line-height: 1.2;
}

.logo-text span {
    display: block;
    font-size: 11px;
    font-weight: 400;
    color: var(--text-muted);
    font-family: 'DM Sans', sans-serif;
}

.sidebar-nav {
    flex: 1;
    padding: 16px 12px;
    overflow-y: auto;
}

.nav-label {
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-muted);
    padding: 8px 8px 4px;
    margin-top: 8px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    margin-bottom: 2px;
    position: relative;
    cursor: pointer;
}

.nav-item:hover {
    background: var(--accent-soft);
    color: var(--text-primary);
}

.nav-item.active {
    background: var(--accent-soft);
    color: var(--accent);
}

.nav-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 60%;
    background: var(--accent);
    border-radius: 0 4px 4px 0;
}

.nav-item .nav-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
}

.nav-badge {
    margin-left: auto;
    background: var(--accent);
    color: #fff;
    font-size: 10px;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: 20px;
}

.sidebar-footer {
    padding: 12px;
    border-top: 1px solid var(--border);
}

.logout-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    color: var(--rose);
    font-size: 14px;
    font-weight: 500;
    width: 100%;
    background: transparent;
    transition: var(--transition);
}

.logout-btn:hover {
    background: var(--rose-soft);
}

/* ===== MAIN CONTENT ===== */
.main {
    margin-left: var(--sidebar-width);
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ===== TOPBAR ===== */
.topbar {
    height: var(--topbar-h);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(12px);
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.page-title {
    font-family: 'Syne', sans-serif;
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
}

.breadcrumb {
    font-size: 12px;
    color: var(--text-muted);
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.topbar-btn {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    color: var(--text-secondary);
    transition: var(--transition);
}

.topbar-btn:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
    border-color: var(--border-strong);
}

.topbar-btn.active {
    background: var(--accent-soft);
    color: var(--accent);
    border-color: var(--accent);
}

.admin-pill {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 6px 14px 6px 6px;
    border-radius: 30px;
    transition: var(--transition);
    cursor: pointer;
}

.admin-pill:hover {
    border-color: var(--border-strong);
    background: var(--bg-card-hover);
}

.admin-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), #a78bfa);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
    color: #fff;
}

.admin-name {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
}

/* ===== PAGE CONTENT ===== */
.page-content {
    padding: 28px;
    flex: 1;
}

/* ===== STATS GRID ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 28px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 22px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.stat-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--card-accent), transparent);
    opacity: 0;
    transition: var(--transition);
}

.stat-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-strong);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-card:hover::after {
    opacity: 1;
}

.stat-card.c-purple {
    --card-accent: var(--accent);
}

.stat-card.c-green {
    --card-accent: var(--green);
}

.stat-card.c-blue {
    --card-accent: var(--blue);
}

.stat-card.c-amber {
    --card-accent: var(--amber);
}

.stat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.stat-icon {
    width: 42px;
    height: 42px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.stat-icon.bg-purple {
    background: var(--accent-soft);
}

.stat-icon.bg-green {
    background: var(--green-soft);
}

.stat-icon.bg-blue {
    background: var(--blue-soft);
}

.stat-icon.bg-amber {
    background: var(--amber-soft);
}

.stat-badge {
    font-size: 11px;
    font-weight: 600;
    padding: 3px 9px;
    border-radius: 20px;
}

.badge-green {
    background: var(--green-soft);
    color: var(--green);
}

.badge-blue {
    background: var(--blue-soft);
    color: var(--blue);
}

.badge-amber {
    background: var(--amber-soft);
    color: var(--amber);
}

.badge-purple {
    background: var(--accent-soft);
    color: var(--accent);
}

.stat-value {
    font-family: 'Syne', sans-serif;
    font-size: 32px;
    font-weight: 800;
    line-height: 1;
    color: var(--text-primary);
}

.stat-label {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 400;
}

/* ===== SECTION HEADERS ===== */
.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.section-title {
    font-family: 'Syne', sans-serif;
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
}

.section-sub {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 2px;
}

/* ===== CARDS ===== */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-sm);
}

.card-sm {
    padding: 16px;
}

/* ===== GRID LAYOUTS ===== */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

/* ===== FORMS ===== */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.form-input,
.form-select {
    width: 100%;
    padding: 11px 14px;
    background: var(--bg-primary);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
    transition: var(--transition);
    outline: none;
    appearance: none;
}

.form-input:focus,
.form-select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

.form-input::placeholder {
    color: var(--text-muted);
}

.form-select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%238b93a7' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 36px;
    cursor: pointer;
}

.form-hint {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 5px;
}

.form-error {
    font-size: 12px;
    color: var(--rose);
    margin-top: 5px;
    display: none;
}

.form-error.show {
    display: block;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 11px 20px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
    border: 1px solid transparent;
    white-space: nowrap;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 4px 14px var(--accent-glow);
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px var(--accent-glow);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border-color: var(--border-strong);
}

.btn-secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent);
}

.btn-danger {
    background: var(--rose-soft);
    color: var(--rose);
    border-color: transparent;
}

.btn-danger:hover {
    background: var(--rose);
    color: #fff;
}

.btn-sm {
    padding: 7px 14px;
    font-size: 12px;
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* ===== TABLE ===== */
.table-wrap {
    overflow-x: auto;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13.5px;
}

thead {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border);
}

thead th {
    padding: 12px 16px;
    text-align: left;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    color: var(--text-muted);
    white-space: nowrap;
}

tbody tr {
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
}

tbody tr:last-child {
    border-bottom: none;
}

tbody tr:hover {
    background: var(--bg-card-hover);
}

tbody td {
    padding: 13px 16px;
    color: var(--text-primary);
    vertical-align: middle;
}

/* ===== STATUS BADGES ===== */
.status {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.status::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
}

.status-present {
    background: var(--green-soft);
    color: var(--green);
}

.status-absent {
    background: var(--rose-soft);
    color: var(--rose);
}

.status-late {
    background: var(--amber-soft);
    color: var(--amber);
}

/* ===== EMPTY STATE ===== */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-icon {
    font-size: 48px;
    margin-bottom: 12px;
    opacity: 0.5;
}

.empty-title {
    font-family: 'Syne', sans-serif;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.empty-text {
    font-size: 13px;
}

/* ===== STUDENT LIST ===== */
.student-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 16px;
    max-height: 360px;
    overflow-y: auto;
}

.student-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.student-item:hover {
    border-color: var(--border-strong);
    background: var(--bg-card-hover);
}

.student-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.student-avatar {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--blue), var(--accent));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}

.student-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.student-class {
    font-size: 12px;
    color: var(--text-muted);
}

/* ===== TOAST ===== */
#toast-container {
    position: fixed;
    bottom: 28px;
    right: 28px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 10px;
    pointer-events: none;
}

.toast {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    background: var(--bg-card);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 300px;
    max-width: 380px;
    animation: toastIn 0.35s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
    pointer-events: all;
}

.toast.hiding {
    animation: toastOut 0.25s ease forwards;
}

.toast-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
}

.toast.success .toast-icon {
    background: var(--green-soft);
}

.toast.error .toast-icon {
    background: var(--rose-soft);
}

.toast.info .toast-icon {
    background: var(--blue-soft);
}

.toast-body {
    flex: 1;
}

.toast-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
}

.toast-msg {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 1px;
}

.toast-close {
    color: var(--text-muted);
    font-size: 18px;
    line-height: 1;
    cursor: pointer;
    background: none;
    padding: 0;
    transition: var(--transition);
}

.toast-close:hover {
    color: var(--text-primary);
}

@keyframes toastIn {
    from {
        opacity: 0;
        transform: translateX(30px) scale(0.95);
    }

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

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

    to {
        opacity: 0;
        transform: translateX(30px) scale(0.95);
    }
}

/* ===== LOADER ===== */
.page-loader {
    position: fixed;
    inset: 0;
    background: var(--bg-primary);
    z-index: 9998;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 16px;
    transition: opacity 0.4s ease;
}

.page-loader.hidden {
    opacity: 0;
    pointer-events: none;
}

.loader-ring {
    width: 44px;
    height: 44px;
    border: 3px solid var(--border-strong);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

.loader-text {
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 500;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ===== SECTION DIVIDER ===== */
.divider {
    height: 1px;
    background: var(--border);
    margin: 24px 0;
}

/* ===== INFO ROW ===== */
.info-row {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: var(--text-secondary);
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
}

.info-row:last-child {
    border-bottom: none;
}

.info-key {
    font-weight: 500;
    color: var(--text-muted);
    min-width: 120px;
}

/* ===== RECENT ACTIVITY ===== */
.activity-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.activity-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 14px 0;
    border-bottom: 1px solid var(--border);
}

.activity-item:last-child {
    border-bottom: none;
}

.activity-dot {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
    margin-top: 1px;
}

.activity-title {
    font-size: 13.5px;
    font-weight: 500;
    color: var(--text-primary);
}

.activity-sub {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 2px;
}

/* ===== QUICK STATS ===== */
.mini-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.mini-stat {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 14px;
    text-align: center;
}

.mini-stat-val {
    font-family: 'Syne', sans-serif;
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
}

.mini-stat-lbl {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 2px;
}

/* ===== TEACHER CARD ===== */
.teacher-card {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    margin-bottom: 8px;
    transition: var(--transition);
}

.teacher-card:hover {
    border-color: var(--accent);
    background: var(--accent-soft);
}

.teacher-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), #a78bfa);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}

.teacher-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.teacher-meta {
    font-size: 12px;
    color: var(--text-muted);
}

/* ===== FILTER BAR ===== */
.filter-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.filter-bar .form-input,
.filter-bar .form-select {
    max-width: 200px;
    margin: 0;
}

/* ===== PROGRESS ===== */
.progress-bar {
    height: 6px;
    background: var(--border-strong);
    border-radius: 3px;
    overflow: hidden;
    margin-top: 6px;
}

.progress-fill {
    height: 100%;
    border-radius: 3px;
    background: linear-gradient(90deg, var(--accent), #a78bfa);
    transition: width 0.6s ease;
}

/* ===== CHART AREA (visual only) ===== */
.chart-placeholder {
    height: 180px;
    display: flex;
    align-items: flex-end;
    gap: 8px;
    padding: 0 4px;
}

.chart-bar-wrap {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    height: 100%;
    justify-content: flex-end;
}

.chart-bar {
    width: 100%;
    border-radius: 4px 4px 0 0;
    background: linear-gradient(to top, var(--accent), #a78bfa);
    opacity: 0.85;
    transition: var(--transition);
    min-height: 8px;
}

.chart-bar:hover {
    opacity: 1;
}

.chart-label {
    font-size: 10px;
    color: var(--text-muted);
    text-align: center;
}

/* ===== MOBILE TOGGLE ===== */
.sidebar-toggle {
    display: none;
    width: 36px;
    height: 36px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--text-secondary);
    cursor: pointer;
}

/* ===== OVERLAY ===== */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 99;
    backdrop-filter: blur(2px);
}

.sidebar-overlay.show {
    display: block;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1200px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 900px) {
    .grid-2 {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
        box-shadow: var(--shadow-lg);
    }

    .main {
        margin-left: 0;
    }

    .sidebar-toggle {
        display: flex;
    }

    .page-content {
        padding: 16px;
    }

    .topbar {
        padding: 0 16px;
    }

    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }

    .filter-bar .form-input,
    .filter-bar .form-select {
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .mini-stats {
        grid-template-columns: 1fr;
    }

    .toast {
        min-width: auto;
        max-width: calc(100vw - 32px);
    }
}

/* ===== PAGE TRANSITIONS ===== */
.page-content {
    animation: fadeUp 0.3s ease forwards;
}

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(12px);
    }

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

/* ===== RADIO BUTTONS ===== */
.radio-group {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.radio-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 9px 16px;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 13px;
    color: var(--text-secondary);
    transition: var(--transition);
    background: var(--bg-primary);
}

.radio-btn input {
    display: none;
}

.radio-btn:hover {
    border-color: var(--accent);
    color: var(--text-primary);
}

.radio-btn.selected {
    background: var(--accent-soft);
    border-color: var(--accent);
    color: var(--accent);
    font-weight: 600;
}