@import url("dashboard.css");
@import url("forms.css");
@import url("tables.css");
@import url("timetable.css");
@import url("modal.css");
@import url("responsive.css");

:root {
    color-scheme: light;
    --bg: #eef3fb;
    --bg-elevated: rgba(255, 255, 255, 0.82);
    --surface: #ffffff;
    --surface-strong: #f8fbff;
    --surface-muted: #f3f7fd;
    --border: #d7e2f1;
    --border-strong: #c4d4ea;
    --text: #10233d;
    --muted: #5f7087;
    --primary: #2563eb;
    --primary-strong: #1d4ed8;
    --primary-soft: #dbeafe;
    --success: #15803d;
    --success-soft: #dcfce7;
    --warning: #b45309;
    --warning-soft: #fef3c7;
    --danger: #b91c1c;
    --danger-soft: #fee2e2;
    --info: #0369a1;
    --info-soft: #e0f2fe;
    --shadow-sm: 0 6px 18px rgba(16, 35, 61, 0.08);
    --shadow-md: 0 18px 40px rgba(16, 35, 61, 0.12);
    --shadow-lg: 0 28px 80px rgba(16, 35, 61, 0.16);
    --radius-sm: 12px;
    --radius-md: 18px;
    --radius-lg: 26px;
    --sidebar-width: 274px;
    --content-max: 1600px;
    --transition: 180ms ease;
    --font-sans: "Aptos", "Segoe UI Variable", "Segoe UI", -apple-system, BlinkMacSystemFont, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    min-height: 100vh;
    font-family: var(--font-sans);
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(37, 99, 235, 0.12), transparent 35%),
        radial-gradient(circle at top right, rgba(14, 165, 233, 0.1), transparent 28%),
        linear-gradient(180deg, #f7faff 0%, #eef3fb 100%);
}
button, input, select, textarea { font: inherit; }
button { border: 0; cursor: pointer; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.app-shell { position: relative; overflow-x: hidden; }
.app-backdrop {
    position: fixed;
    border-radius: 999px;
    filter: blur(40px);
    pointer-events: none;
    opacity: 0.38;
    z-index: 0;
}
.app-backdrop--one { width: 22rem; height: 22rem; background: rgba(37, 99, 235, 0.24); top: -5rem; left: -7rem; }
.app-backdrop--two { width: 18rem; height: 18rem; background: rgba(14, 165, 233, 0.18); right: 2rem; top: 10rem; }

.topbar {
    position: sticky;
    top: 0;
    z-index: 40;
    display: grid;
    grid-template-columns: minmax(240px, 340px) minmax(0, 1fr) auto;
    gap: 1rem;
    align-items: center;
    padding: 1rem 1.25rem;
    margin: 1rem 1rem 0;
    border: 1px solid rgba(255, 255, 255, 0.55);
    border-radius: var(--radius-lg);
    background: var(--bg-elevated);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-sm);
}
.brand { display: flex; align-items: center; gap: 0.9rem; min-width: 0; }
.brand-mark {
    width: 3rem; height: 3rem; display: grid; place-items: center; border-radius: 1rem;
    background: linear-gradient(135deg, var(--primary), #0ea5e9); color: #fff; font-weight: 700; letter-spacing: 0.08em;
    box-shadow: 0 10px 22px rgba(37, 99, 235, 0.28);
}
.brand-kicker { margin: 0 0 0.15rem; font-size: 0.76rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); }
.brand h1 { margin: 0; font-size: 1.15rem; line-height: 1.15; }
.search-shell {
    display: flex; align-items: center; gap: 0.7rem; min-width: 0; padding: 0.2rem 1rem; border: 1px solid var(--border);
    border-radius: 999px; background: rgba(255, 255, 255, 0.86); transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.search-shell:focus-within { border-color: rgba(37, 99, 235, 0.42); box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12); }
.search-icon { color: var(--muted); font-size: 1.1rem; }
.search-input { width: 100%; min-width: 0; border: 0; outline: none; padding: 0.9rem 0; background: transparent; color: var(--text); }
.search-input::placeholder { color: #7b8da7; }
.topbar-actions { display: flex; align-items: center; gap: 0.75rem; }
.icon-button, .profile-button, .btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 0.6rem; min-height: 2.9rem; padding: 0.8rem 1.1rem;
    border-radius: 999px; transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition), border-color var(--transition);
}
.icon-button { width: 2.9rem; padding: 0; border: 1px solid var(--border); background: #fff; color: var(--text); }
.profile-button { border: 1px solid var(--border); background: #fff; color: var(--text); padding-inline: 0.95rem 1.1rem; }
.profile-avatar {
    width: 1.9rem; height: 1.9rem; display: grid; place-items: center; border-radius: 999px;
    background: linear-gradient(135deg, var(--primary), #0ea5e9); color: #fff; font-weight: 700;
}
.icon-button:hover, .profile-button:hover, .btn:hover, .sidebar-link:hover { transform: translateY(-1px); box-shadow: var(--shadow-sm); }

.workspace {
    position: relative; z-index: 1; display: grid; grid-template-columns: var(--sidebar-width) minmax(0, 1fr); gap: 1rem;
    width: min(calc(100% - 2rem), var(--content-max)); margin: 1rem auto 2rem; padding-bottom: 1rem;
}
.sidebar {
    display: flex; flex-direction: column; gap: 1rem; padding: 1rem; border: 1px solid rgba(255, 255, 255, 0.7); border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.72); backdrop-filter: blur(16px); box-shadow: var(--shadow-sm); min-height: calc(100vh - 8rem);
}
.sidebar-nav { display: grid; gap: 0.55rem; }
.sidebar-link {
    display: flex; align-items: center; justify-content: flex-start; min-height: 3rem; padding: 0.85rem 1rem; border-radius: 1rem; background: transparent;
    color: var(--text); border: 1px solid transparent; text-align: left; font-weight: 600;
}
.sidebar-link.is-active { background: linear-gradient(135deg, var(--primary), #0ea5e9); color: #fff; box-shadow: 0 14px 24px rgba(37, 99, 235, 0.22); }
.sidebar-footer { margin-top: auto; padding: 1rem; }
.sidebar-footer__label { margin: 0 0 0.4rem; text-transform: uppercase; letter-spacing: 0.14em; font-size: 0.72rem; color: var(--muted); }
.content-area { min-width: 0; display: grid; gap: 1rem; }
.page { display: none; min-width: 0; }
.page.page--active { display: block; }
.card, .panel, .surface {
    border: 1px solid rgba(212, 224, 240, 0.9); border-radius: var(--radius-md); background: rgba(255, 255, 255, 0.88); box-shadow: var(--shadow-sm);
}
.card { padding: 1rem; }
.page-frame {
    display: grid; gap: 1rem; padding: 1.25rem; border: 1px solid rgba(255, 255, 255, 0.82); border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.78); box-shadow: var(--shadow-sm); backdrop-filter: blur(14px);
}
.page-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem; }
.settings-page-header { display: grid; grid-template-columns: minmax(0, 1fr) minmax(16rem, 18rem); align-items: start; }
.settings-page-header .toolbar__group { display: grid; gap: 0.65rem; width: 100%; }
.settings-page-header .toolbar__group .btn { width: 100%; justify-content: center; }
.page-header h2, .page-header h3, .section-title { margin: 0; line-height: 1.2; }
.section-eyebrow { margin: 0 0 0.45rem; color: var(--primary); font-size: 0.76rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.14em; }
.page-copy, .muted { margin: 0; color: var(--muted); }
.btn { border: 1px solid transparent; background: var(--surface); color: var(--text); font-weight: 700; box-shadow: var(--shadow-sm); }
.btn-primary { background: linear-gradient(135deg, var(--primary), #0ea5e9); color: #fff; }
.btn-secondary { background: #fff; border-color: var(--border); }
.btn-soft { background: var(--primary-soft); color: var(--primary-strong); }
.btn-danger { background: var(--danger-soft); color: var(--danger); }
.btn-sm { min-height: 2.4rem; padding: 0.55rem 0.85rem; border-radius: 0.85rem; }
.toolbar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.8rem; }
.toolbar__group { display: flex; flex-wrap: wrap; gap: 0.65rem; align-items: center; }
.stack { display: grid; gap: 1rem; }
.grid { display: grid; gap: 1rem; }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid--auto { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.field--full { grid-column: 1 / -1; }
.chip, .tag {
    display: inline-flex; align-items: center; gap: 0.45rem; min-height: 2rem; padding: 0.35rem 0.7rem; border-radius: 999px; font-size: 0.82rem; font-weight: 700; white-space: nowrap;
}
.chip--primary { background: var(--primary-soft); color: var(--primary-strong); }
.chip--success { background: var(--success-soft); color: var(--success); }
.chip--warning { background: var(--warning-soft); color: var(--warning); }
.chip--danger { background: var(--danger-soft); color: var(--danger); }
.chip--info { background: var(--info-soft); color: var(--info); }
.chip--muted { background: #eef2f7; color: #607086; }
.status-dot { width: 0.55rem; height: 0.55rem; border-radius: 999px; background: currentColor; }
.status--active { color: var(--success); }
.status--inactive { color: var(--muted); }
.status--pending { color: var(--warning); }
.status--conflict { color: var(--danger); }
.empty-state {
    display: grid; gap: 0.65rem; place-items: center; padding: 2rem; text-align: center; border: 1px dashed var(--border); border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.55); color: var(--muted);
}
.empty-state__icon { width: 3rem; height: 3rem; display: grid; place-items: center; border-radius: 999px; background: var(--primary-soft); color: var(--primary-strong); font-size: 1.35rem; }
.loading-skeleton {
    position: relative; overflow: hidden; min-height: 2.4rem; border-radius: 1rem;
    background: linear-gradient(90deg, #edf3fb 0%, #f7faff 50%, #edf3fb 100%); background-size: 200% 100%; animation: shimmer 1.6s linear infinite;
}
@keyframes shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }
.muted-link { color: var(--primary-strong); font-weight: 700; }
.visually-hidden {
    position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}
.color-1 { background: #dbeafe; color: #1d4ed8; }
.color-2 { background: #e0f2fe; color: #0369a1; }
.color-3 { background: #dcfce7; color: #166534; }
.color-4 { background: #fef3c7; color: #92400e; }
.color-5 { background: #ede9fe; color: #6d28d9; }
.color-6 { background: #ffe4e6; color: #be123c; }
.color-7 { background: #e2e8f0; color: #334155; }
.color-8 { background: #cffafe; color: #155e75; }
.divider { height: 1px; background: linear-gradient(90deg, transparent, var(--border), transparent); }