/* ─── Ornge UI · shared by the parent dashboard and the student portal ─────
   Styled after OrngeChat. Each theme sets a handful of base tokens on
   <html data-theme="…">; everything else is derived from them below.
   ─────────────────────────────────────────────────────────────────── */

/* ─── Themes (same palette as OrngeChat) ─── */

:root,
[data-theme="orange"] {
    --accent: #ff6b00;
    --accent-rgb: 255, 107, 0;
    --accent-hover: #ff8533;
    --on-accent: #000;
    --bg-base: #050510;
    --bg-primary: #0a0a1e;
    --bg-secondary: #12121f;
    --bg-tertiary: #1a1a2e;
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, .72);
    --text-muted: rgba(255, 255, 255, .5);
    --card-border: rgba(255, 255, 255, .08);
    --ok: #23a55a;
    --warn: #faa61a;
    --danger: #f23f43;
    --glow: 1;
    color-scheme: dark;
}

[data-theme="cyan"] { --accent: #00f0ff; --accent-rgb: 0, 240, 255; --accent-hover: #33f5ff; }
[data-theme="magenta"] { --accent: #ff00aa; --accent-rgb: 255, 0, 170; --accent-hover: #ff33bb; }
[data-theme="green"] { --accent: #05ffa1; --accent-rgb: 5, 255, 161; --accent-hover: #33ffb5; }
[data-theme="purple"] { --accent: #b829dd; --accent-rgb: 184, 41, 221; --accent-hover: #c54fe5; --on-accent: #fff; }
[data-theme="gold"] { --accent: #fcee0a; --accent-rgb: 252, 238, 10; --accent-hover: #fdf23b; }

[data-theme="slate"] {
    --accent: #5865f2;
    --accent-rgb: 88, 101, 242;
    --accent-hover: #4752c4;
    --on-accent: #fff;
    --bg-base: #e3e5e8;
    --bg-primary: #f2f3f5;
    --bg-secondary: #ffffff;
    --bg-tertiary: #ebedef;
    --text-primary: #060607;
    --text-secondary: rgba(6, 6, 7, .72);
    --text-muted: rgba(6, 6, 7, .55);
    --card-border: rgba(0, 0, 0, .1);
    --ok: #15803d;
    --warn: #a16207;
    --danger: #c62828;
    --glow: 0;
    color-scheme: light;
}

[data-theme="light"] {
    --accent: #0088cc;
    --accent-rgb: 0, 136, 204;
    --accent-hover: #0072ab;
    --on-accent: #fff;
    --bg-base: #f0f2f5;
    --bg-primary: #f8f9fa;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f0f2f5;
    --text-primary: #1a1a1a;
    --text-secondary: rgba(26, 26, 26, .72);
    --text-muted: rgba(26, 26, 26, .55);
    --card-border: rgba(0, 0, 0, .1);
    --ok: #15803d;
    --warn: #a16207;
    --danger: #c62828;
    --glow: 0;
    color-scheme: light;
}

[data-theme="fox"] {
    --accent: #c25100;
    --accent-rgb: 194, 81, 0;
    --accent-hover: #a34400;
    --on-accent: #fff;
    --bg-base: #a1a1a1;
    --bg-primary: #bababa;
    --bg-secondary: #cbcbcb;
    --bg-tertiary: #c1c1c1;
    --text-primary: #121212;
    --text-secondary: rgba(18, 18, 18, .78);
    --text-muted: rgba(18, 18, 18, .62);
    --card-border: rgba(0, 0, 0, .14);
    --ok: #14622f;
    --warn: #7a4a00;
    --danger: #a11b1b;
    --glow: 0;
    color-scheme: light;
}

/* ─── Derived tokens (used by the components below) ─── */

:root {
    --brand: var(--accent);
    --brand-strong: var(--accent-hover);
    --brand-soft: rgba(var(--accent-rgb), .14);
    --bg: var(--bg-primary);
    --surface: var(--bg-secondary);
    --surface-2: var(--bg-tertiary);
    --border: var(--card-border);
    --glass-border: rgba(var(--accent-rgb), .18);
    --glass-border-hover: rgba(var(--accent-rgb), .4);
    --text: var(--text-primary);
    --ok-soft: color-mix(in srgb, var(--ok) 16%, transparent);
    --warn-soft: color-mix(in srgb, var(--warn) 16%, transparent);
    --danger-soft: color-mix(in srgb, var(--danger) 14%, transparent);
    --radius: 16px;
    --radius-sm: 10px;
    --shadow: 0 8px 32px rgba(0, 0, 0, calc(.12 + .28 * var(--glow)));
    --shadow-glow: 0 0 20px rgba(var(--accent-rgb), calc(.3 * var(--glow))), 0 0 40px rgba(var(--accent-rgb), calc(.1 * var(--glow)));
    --nav-w: 236px;
    --font-sans: "Rajdhani", "Segoe UI", system-ui, sans-serif;
    --font-display: "Orbitron", "Segoe UI", system-ui, sans-serif;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 16.5px;
    font-weight: 500;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

body {
    min-height: 100vh;
    background: var(--bg-primary);
}

/* The glow sits on its own fixed layer. (background-attachment: fixed made the browser repaint the whole
   screen on every scroll and update, which felt sluggish, especially on PCs without graphics acceleration.) */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    background:
        radial-gradient(1200px 600px at 100% -10%, rgba(var(--accent-rgb), calc(.03 + .07 * var(--glow))), transparent 60%),
        radial-gradient(900px 500px at -10% 110%, rgba(var(--accent-rgb), calc(.02 + .04 * var(--glow))), transparent 60%);
}

h1, h2, h3 { line-height: 1.25; margin: 0 0 .5rem; }
h1 { font-family: var(--font-display); font-size: 1.45rem; font-weight: 700; letter-spacing: .02em; }
h2 { font-size: 1.2rem; font-weight: 700; letter-spacing: .01em; }
h3 { font-size: 1.05rem; font-weight: 700; }
h1:focus { outline: none; }
p { margin: 0 0 .75rem; }
a { color: var(--accent); }
a:hover { color: var(--accent-hover); }
.muted { color: var(--text-muted); }
.small { font-size: .88rem; }
::selection { background: rgba(var(--accent-rgb), .35); }

/* ─── Shell ─── */

.shell { display: flex; min-height: 100vh; }

.sidenav {
    width: var(--nav-w);
    flex-shrink: 0;
    background: var(--bg-base);
    border-right: 1px solid var(--glass-border);
    padding: 1.25rem .75rem;
    display: flex;
    flex-direction: column;
    gap: .2rem;
    position: sticky;
    top: 0;
    height: 100vh;
}

.brand {
    display: flex;
    align-items: center;
    gap: .65rem;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: .95rem;
    letter-spacing: .03em;
    padding: .25rem .6rem 1.1rem;
    color: var(--text);
    text-decoration: none;
}
.brand-mark {
    width: 34px; height: 34px;
    border-radius: 10px;
    background: var(--accent);
    color: var(--on-accent);
    display: grid; place-items: center;
    font-size: 1rem;
    box-shadow: var(--shadow-glow);
    flex-shrink: 0;
}
.brand small { display: block; font-family: var(--font-sans); font-weight: 600; font-size: .75rem; letter-spacing: .08em; text-transform: uppercase; color: var(--text-muted); }

.navlink {
    display: flex;
    align-items: center;
    gap: .7rem;
    padding: .55rem .75rem;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 600;
    font-size: 1.02rem;
    border-left: 3px solid transparent;
    transition: background .15s, color .15s;
}
.navlink:hover { background: rgba(var(--accent-rgb), .07); color: var(--text); }
.navlink.active { background: var(--brand-soft); color: var(--accent); border-left-color: var(--accent); }
.navlink .ico { width: 1.3rem; text-align: center; }
.nav-spacer { flex: 1; }

.main { flex: 1; min-width: 0; padding: 2rem clamp(1rem, 3vw, 2.5rem) 4rem; max-width: 1200px; }

.page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.5rem; }
.page-head p { margin: 0; }

@media (max-width: 820px) {
    .shell { flex-direction: column; }
    .sidenav {
        position: fixed; bottom: 0; top: auto; left: 0; right: 0;
        width: 100%; height: auto;
        flex-direction: row; justify-content: space-around;
        padding: .35rem .25rem calc(.35rem + env(safe-area-inset-bottom));
        border-right: 0; border-top: 1px solid var(--glass-border);
        z-index: 50;
    }
    .brand, .nav-spacer, .nav-secondary { display: none; }
    .navlink { flex-direction: column; gap: 0; font-size: .72rem; padding: .35rem .4rem; border-left: 0; border-top: 2px solid transparent; }
    .navlink.active { border-top-color: var(--accent); }
    .navlink .ico { font-size: 1.2rem; }
    .main { padding: 1.25rem 1rem 6rem; }
}

/* ─── Building blocks ─── */

.card {
    background: var(--surface);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 1.25rem;
    box-shadow: var(--shadow);
    transition: border-color .2s, box-shadow .2s;
}
.card + .card { margin-top: 1rem; }
.grid > .card, .stats > .card, .grid > * > .card:first-child { margin-top: 0; }
.card-head { display: flex; justify-content: space-between; align-items: center; gap: .75rem; margin-bottom: .75rem; }
.card-head h2 { margin: 0; }

.grid { display: grid; gap: 1rem; }
.grid > * { min-width: 0; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
/* Stat tiles: always one row on desktop, stacked on phones. */
.stats { display: grid; gap: 1rem; grid-template-columns: repeat(3, minmax(0, 1fr)); margin-bottom: 1rem; }
@media (max-width: 720px) { .stats { grid-template-columns: 1fr; } }

.stat { display: flex; flex-direction: column; gap: .2rem; }
.stat .label { color: var(--text-muted); font-size: .8rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.stat .value { font-family: var(--font-display); font-size: 1.15rem; font-weight: 700; margin: .15rem 0; }
.stat .value.big { font-family: var(--font-sans); font-size: 2.3rem; line-height: 1.1; color: var(--accent); }
.stat .detail { color: var(--text-secondary); font-size: .92rem; }

.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: .4rem;
    font: inherit; font-weight: 700; letter-spacing: .02em;
    padding: .5rem 1rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--card-border);
    background: var(--surface-2);
    color: var(--text);
    cursor: pointer;
    text-decoration: none;
    white-space: nowrap;
    transition: background .15s, border-color .15s, box-shadow .15s, color .15s;
}
.btn:hover { border-color: var(--glass-border-hover); color: var(--text); }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: var(--on-accent); box-shadow: var(--shadow-glow); }
.btn-danger { color: var(--danger); background: transparent; }
.btn-danger:hover { background: var(--danger-soft); border-color: var(--danger); color: var(--danger); }
.btn-ghost { border-color: transparent; background: transparent; }
.btn-sm { padding: .28rem .65rem; font-size: .88rem; }
.btn-block { width: 100%; }
.btn-row { display: flex; gap: .5rem; flex-wrap: wrap; align-items: center; }

.field { display: flex; flex-direction: column; gap: .3rem; margin-bottom: 1rem; }
.field label { font-weight: 700; font-size: .9rem; letter-spacing: .02em; }
.field .hint { color: var(--text-muted); font-size: .85rem; }
.field-row { display: grid; gap: 0 1rem; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); }

input[type=text], input[type=password], input[type=url], input[type=date], input[type=time], input[type=number], select, textarea {
    font: inherit;
    color: var(--text);
    background: var(--bg-primary);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-sm);
    padding: .5rem .7rem;
    width: 100%;
}
select option { background: var(--bg-secondary); color: var(--text); }
input::placeholder, textarea::placeholder { color: var(--text-muted); }
input[type=color] { width: 3rem; height: 2.4rem; padding: .15rem; border: 1px solid var(--card-border); border-radius: var(--radius-sm); background: var(--bg-primary); }
input[type=checkbox] { accent-color: var(--accent); width: 1.05rem; height: 1.05rem; }
textarea { min-height: 6rem; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(var(--accent-rgb), .2); }
.checkbox { display: flex; gap: .5rem; align-items: center; font-weight: 600; }

.alert { padding: .7rem .9rem; border-radius: var(--radius-sm); margin-bottom: 1rem; font-size: .95rem; font-weight: 600; border: 1px solid transparent; }
.alert-error { background: var(--danger-soft); color: var(--danger); border-color: color-mix(in srgb, var(--danger) 30%, transparent); }
.alert-ok { background: var(--ok-soft); color: var(--ok); border-color: color-mix(in srgb, var(--ok) 30%, transparent); }
.alert-warn { background: var(--warn-soft); color: var(--warn); border-color: color-mix(in srgb, var(--warn) 30%, transparent); }

.pill {
    display: inline-flex; align-items: center; gap: .3rem;
    padding: .08rem .55rem;
    border-radius: 999px;
    font-size: .76rem; font-weight: 700; letter-spacing: .04em;
    background: var(--surface-2); color: var(--text-secondary);
    border: 1px solid var(--card-border);
    vertical-align: middle;
}
.pill-ok { background: var(--ok-soft); color: var(--ok); border-color: transparent; }
.pill-warn { background: var(--warn-soft); color: var(--warn); border-color: transparent; }
.pill-brand { background: var(--brand-soft); color: var(--accent); border-color: var(--glass-border); }
.pill-danger { background: var(--danger-soft); color: var(--danger); border-color: transparent; }

.subject-dot { width: .7rem; height: .7rem; border-radius: 50%; display: inline-block; flex-shrink: 0; }

.empty { text-align: center; padding: 2rem 1rem; color: var(--text-muted); }
.empty .big { font-size: 2rem; display: block; margin-bottom: .5rem; }

.list { list-style: none; margin: 0; padding: 0; }
.list-item { display: flex; align-items: center; gap: .85rem; padding: .7rem 0; border-top: 1px solid var(--card-border); }
.list-item:first-child { border-top: 0; }
.list-item .grow { flex: 1; min-width: 0; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

code { overflow-wrap: anywhere; font-family: "Share Tech Mono", ui-monospace, Consolas, monospace; font-size: .9em; color: var(--text-secondary); }

/* ─── Periods (today / week planner) ─── */

.period {
    display: grid;
    grid-template-columns: 4.5rem 4px 1fr auto;
    gap: .85rem;
    align-items: center;
    padding: .65rem 0;
    border-top: 1px solid var(--card-border);
}
.period:first-child { border-top: 0; }
.period .time { font-family: "Share Tech Mono", ui-monospace, monospace; font-size: .85rem; color: var(--text-muted); line-height: 1.35; }
.period .bar { align-self: stretch; border-radius: 4px; }
.period.is-now { background: var(--brand-soft); margin: 0 -1.25rem; padding: .65rem 1.25rem; box-shadow: inset 3px 0 0 var(--accent); }
.period.is-soft .bar { opacity: .35; }
.period.is-soft .name { color: var(--text-muted); font-weight: 500; }
.period .name { font-weight: 700; font-size: 1.05rem; }

/* ─── Timetable grid ─── */

.tt-scroll { overflow-x: auto; margin: 0 -1.25rem; padding: 0 1.25rem; }
.tt { display: grid; grid-template-columns: repeat(var(--days), minmax(150px, 1fr)); gap: .75rem; min-width: calc(var(--days) * 160px); }
.tt-day h3 { font-size: .8rem; text-transform: uppercase; letter-spacing: .1em; color: var(--text-muted); margin-bottom: .5rem; }
.tt-slot {
    width: 100%;
    text-align: left;
    font: inherit;
    color: var(--text);
    display: block;
    padding: .5rem .65rem;
    margin-bottom: .4rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--card-border);
    border-left: 4px solid var(--c, var(--card-border));
    background: var(--surface-2);
    cursor: pointer;
    transition: border-color .15s, background .15s;
}
.tt-slot:hover { border-color: var(--glass-border-hover); border-left-color: var(--c, var(--accent)); }
.tt-slot .t { font-family: "Share Tech Mono", ui-monospace, monospace; font-size: .78rem; color: var(--text-muted); }
.tt-slot .n { font-weight: 700; font-size: .98rem; }
.tt-slot.soft { background: transparent; border-style: dashed; border-left-style: solid; }
.tt-add { width: 100%; border: 1px dashed var(--card-border); background: transparent; color: var(--text-muted); border-radius: var(--radius-sm); padding: .45rem; font: inherit; font-weight: 600; cursor: pointer; }
.tt-add:hover { color: var(--accent); border-color: var(--accent); }

/* ─── Theme picker ─── */

.theme-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(92px, 1fr)); gap: .6rem; }
.theme-option {
    font: inherit; color: var(--text); cursor: pointer;
    display: flex; flex-direction: column; align-items: center; gap: .35rem;
    padding: .6rem .4rem .5rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--card-border);
    background: var(--surface-2);
    font-weight: 700; font-size: .9rem;
}
.theme-option:hover { border-color: var(--glass-border-hover); }
.theme-option.active { border-color: var(--accent); box-shadow: 0 0 0 2px rgba(var(--accent-rgb), .35); }
.theme-swatch {
    width: 100%; height: 38px; border-radius: 7px;
    display: grid; place-items: center;
    border: 1px solid rgba(128, 128, 128, .25);
}
.theme-swatch span { width: 18px; height: 18px; border-radius: 50%; box-shadow: 0 0 10px currentColor; }

/* ─── Drawer (edit panel) ─── */

.drawer-backdrop { position: fixed; inset: 0; background: rgba(0, 0, 0, .6); z-index: 90; animation: fade .15s; backdrop-filter: blur(2px); }
.drawer {
    position: fixed; top: 0; right: 0; bottom: 0;
    width: min(460px, 100%);
    background: var(--surface);
    border-left: 1px solid var(--glass-border);
    z-index: 100;
    display: flex; flex-direction: column;
    box-shadow: -8px 0 40px rgba(0, 0, 0, .35);
    animation: slide .18s ease-out;
}
.drawer-head { display: flex; justify-content: space-between; align-items: center; padding: 1rem 1.25rem; border-bottom: 1px solid var(--card-border); }
.drawer-head h2 { margin: 0; }
.drawer-body { padding: 1.25rem; overflow-y: auto; flex: 1; }
.drawer-foot { padding: 1rem 1.25rem; border-top: 1px solid var(--card-border); display: flex; gap: .5rem; justify-content: space-between; }
@keyframes slide { from { transform: translateX(30px); opacity: 0; } }
@keyframes fade { from { opacity: 0; } }

/* ─── Auth pages ─── */

.auth-wrap { min-height: 100vh; display: grid; place-items: center; padding: 1.5rem; }
.auth-card { width: min(420px, 100%); box-shadow: var(--shadow), var(--shadow-glow); }
.auth-card .brand { justify-content: center; padding-bottom: 1.25rem; font-size: 1.15rem; }

/* ─── Blazor plumbing ─── */

.validation-message { color: var(--danger); font-size: .88rem; font-weight: 600; }
.blazor-error-boundary { background: var(--danger-soft); color: var(--danger); padding: 1rem; border-radius: var(--radius-sm); }
.blazor-error-boundary::after { content: "Something went wrong on this part of the page."; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(var(--accent-rgb), .25); border-radius: 10px; border: 2px solid transparent; background-clip: padding-box; }
::-webkit-scrollbar-thumb:hover { background: rgba(var(--accent-rgb), .45); background-clip: padding-box; border: 2px solid transparent; }

/* ─── Reports and tables ─── */
.report-table { width: 100%; border-collapse: collapse; font-size: .95rem; }
.report-table th, .report-table td { text-align: left; padding: .5rem .6rem; border-bottom: 1px solid var(--card-border); vertical-align: top; }
.report-table th { color: var(--text-muted); font-weight: 600; font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; }
.report-table td.num, .report-table th.num { text-align: right; white-space: nowrap; }
.table-wrap { overflow-x: auto; }
.rag-mini { display: inline-flex; gap: .35rem; white-space: nowrap; }
.report-note { min-height: 4rem; padding: .75rem; border: 1px dashed var(--card-border); border-radius: 10px; white-space: pre-wrap; outline: none; }
.report-note:empty::before { content: attr(data-placeholder); color: var(--text-muted); }
.chat { display: flex; flex-direction: column; gap: .5rem; }
.chat .bubble { max-width: 85%; padding: .6rem .85rem; border-radius: 14px; white-space: pre-wrap; line-height: 1.45; }
.chat .bubble.me { align-self: flex-end; background: var(--accent); color: var(--on-accent); border-bottom-right-radius: 4px; }
.chat .bubble.tutor { align-self: flex-start; background: var(--bg-tertiary); border: 1px solid var(--card-border); border-bottom-left-radius: 4px; }

/* Printing (e.g. a progress report saved as PDF): plain black on white, no navigation or buttons. */
.print-only { display: none; }
@media print {
    :root, :root[data-theme] {
        --bg-primary: #fff; --bg-secondary: #fff; --bg-tertiary: #f4f4f4; --bg-base: #fff;
        --text-primary: #111; --text-secondary: #333; --text-muted: #555; --card-border: #ccc;
        --accent: #c2410c; --on-accent: #fff;
    }
    body { background: #fff !important; color: #111; font-size: 11pt; }
    body::before, .sidenav, .no-print, #blazor-error-ui, #components-reconnect-modal { display: none !important; }
    .shell { display: block; }
    .main { padding: 0; max-width: none; }
    .card { box-shadow: none !important; background: #fff !important; border: 1px solid #ccc; break-inside: avoid; }
    .print-only { display: block; }
    .report-note { border: 0; padding: 0; }
    .report-note:empty { display: none; }
    a { color: inherit; text-decoration: none; }
}
