/* Manual de parapantă — stiluri proprii (fără framework CSS).
   Paleta e cea a manualului tipărit: mov ca accent, cerneală aproape neagră. */

:root {
    --accent: #6a4fb3;
    --accent-dark: #55409a;
    --accent-soft: #f2eff7;
    --ink: #1a1a1a;
    --muted: #6b6b6b;
    --line: #e2e0e8;
    --bg: #faf9fb;
    --card: #ffffff;
    --ok: #2a9d3b;
    --err: #d33630;
    --warn: #c2730e;
    --radius: 10px;
    --shadow: 0 1px 2px rgba(26, 26, 26, .06), 0 8px 24px rgba(26, 26, 26, .05);
}

@media (prefers-color-scheme: dark) {
    :root {
        --accent: #a48ce0;
        --accent-dark: #b9a5ea;
        --accent-soft: #2a2536;
        --ink: #ececf0;
        --muted: #a0a0aa;
        --line: #35323f;
        --bg: #17161c;
        --card: #201e27;
        --ok: #5ec46d;
        --err: #f0736d;
        --warn: #e0a441;
        --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .25);
    }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
          "Helvetica Neue", Arial, sans-serif;
}

a { color: var(--accent); }
a:hover { color: var(--accent-dark); }

h1, h2, h3, h4 { line-height: 1.25; margin: 0 0 .5em; font-weight: 700; }
h1 { font-size: 1.7rem; }
h2 { font-size: 1.35rem; }
h3 { font-size: 1.1rem; }

/* ------------------------------------------------------------- structură --- */

.container {
    width: 100%;
    max-width: 960px;
    margin: 0 auto;
    padding: 0 16px;
}

.site-header {
    background: var(--card);
    border-bottom: 1px solid var(--line);
    position: sticky;
    top: 0;
    z-index: 20;
}

.site-header .container {
    display: flex;
    align-items: center;
    gap: 20px;
    min-height: 58px;
    flex-wrap: wrap;
}

.brand {
    font-weight: 700;
    color: var(--ink);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 9px;
    white-space: nowrap;
}

.brand::before {
    content: "";
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--accent);
    flex: none;
}

.site-nav {
    display: flex;
    gap: 4px;
    margin-left: auto;
    align-items: center;
    flex-wrap: wrap;
}

.site-nav a,
.site-nav button {
    color: var(--muted);
    text-decoration: none;
    padding: 7px 11px;
    border-radius: 7px;
    font-size: .94rem;
    background: none;
    border: 0;
    cursor: pointer;
    font-family: inherit;
}

.site-nav a:hover,
.site-nav button:hover { background: var(--accent-soft); color: var(--accent); }
.site-nav a.activ { color: var(--accent); background: var(--accent-soft); font-weight: 600; }

.site-main { padding: 28px 0 60px; }

.site-footer {
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: .85rem;
    padding: 18px 0;
}

/* ------------------------------------------------------------------ card --- */

.card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 22px;
    box-shadow: var(--shadow);
}

.card + .card { margin-top: 18px; }
.card-title { margin-bottom: 4px; }
.card-sub { color: var(--muted); font-size: .92rem; margin: 0 0 18px; }

/* ------------------------------------------------------ ecran de login --- */

.auth-wrap {
    min-height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px 16px;
}

.auth-card { width: 100%; max-width: 400px; }

.auth-logo {
    text-align: center;
    margin-bottom: 22px;
}

.auth-logo strong { display: block; font-size: 1.15rem; }
.auth-logo span { color: var(--muted); font-size: .88rem; }

/* --------------------------------------------------------------- formulare --- */

.form-group { margin-bottom: 16px; }

label { display: block; font-weight: 600; font-size: .92rem; margin-bottom: 6px; }

input[type=text], input[type=email], input[type=password], select, textarea {
    width: 100%;
    padding: 10px 12px;
    font: inherit;
    color: var(--ink);
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 8px;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent);
}

.has-error input, .has-error select { border-color: var(--err); }
.help-block { color: var(--err); font-size: .86rem; margin: 6px 0 0; }
.hint { color: var(--muted); font-size: .86rem; margin: 6px 0 0; }

.form-check { display: flex; align-items: center; gap: 9px; }
.form-check label { margin: 0; font-weight: 400; }
.form-check input { width: auto; }

/* --------------------------------------------------------------- butoane --- */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    padding: 10px 18px;
    font: inherit;
    font-weight: 600;
    border: 1px solid transparent;
    border-radius: 8px;
    cursor: pointer;
    text-decoration: none;
    line-height: 1.3;
}

.btn-primar { background: var(--accent); color: #fff; }
.btn-primar:hover { background: var(--accent-dark); color: #fff; }
.btn-secundar { background: var(--card); color: var(--ink); border-color: var(--line); }
.btn-secundar:hover { background: var(--accent-soft); color: var(--accent); }
.btn-pericol { background: var(--card); color: var(--err); border-color: var(--line); }
.btn-pericol:hover { background: var(--err); color: #fff; }
.btn-bloc { width: 100%; }
.btn-mic { padding: 6px 12px; font-size: .88rem; }

/* ----------------------------------------------------------------- mesaje --- */

.alert {
    padding: 12px 15px;
    border-radius: 8px;
    margin-bottom: 18px;
    border: 1px solid;
    font-size: .94rem;
}

.alert-success { background: color-mix(in srgb, var(--ok) 12%, var(--card)); border-color: var(--ok); }
.alert-error   { background: color-mix(in srgb, var(--err) 12%, var(--card)); border-color: var(--err); }
.alert-info    { background: var(--accent-soft); border-color: var(--accent); }

/* ---------------------------------------------------------------- tabele --- */

.tabel-wrap { overflow-x: auto; }

table.tabel {
    width: 100%;
    border-collapse: collapse;
    font-size: .94rem;
}

table.tabel th, table.tabel td {
    text-align: left;
    padding: 11px 12px;
    border-bottom: 1px solid var(--line);
    vertical-align: middle;
}

table.tabel th {
    font-size: .8rem;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--muted);
    white-space: nowrap;
}

table.tabel tbody tr:hover { background: var(--accent-soft); }

/* --------------------------------------------------------------- etichete --- */

.eticheta {
    display: inline-block;
    padding: 2px 9px;
    border-radius: 999px;
    font-size: .78rem;
    font-weight: 600;
    border: 1px solid var(--line);
    color: var(--muted);
    white-space: nowrap;
}

.eticheta-admin { color: var(--accent); border-color: var(--accent); background: var(--accent-soft); }
.eticheta-activ { color: var(--ok); border-color: var(--ok); }
.eticheta-inactiv { color: var(--err); border-color: var(--err); }

/* --------------------------------------------------------------- utilitare --- */

.rand { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.rand-spatiu { justify-content: space-between; }
.mt { margin-top: 18px; }
.mt-mic { margin-top: 10px; }
.text-mut { color: var(--muted); }
.text-mic { font-size: .88rem; }
.text-centru { text-align: center; }

@media (max-width: 600px) {
    body { font-size: 15px; }
    .card { padding: 17px; }
    h1 { font-size: 1.4rem; }
}

/* ============================================================ manualul === */

.firimituri {
    font-size: .87rem;
    color: var(--muted);
    margin-bottom: 14px;
}

.firimituri a { color: var(--muted); text-decoration: none; }
.firimituri a:hover { color: var(--accent); text-decoration: underline; }

/* listele de materii și capitole */

.lista-materii, .lista-capitole {
    display: grid;
    gap: 10px;
}

.materie-card, .capitol-card {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 15px 17px;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--ink);
}

.materie-card:hover, .capitol-card:hover {
    border-color: var(--accent);
    color: var(--ink);
    box-shadow: var(--shadow);
}

.materie-numar, .capitol-numar {
    flex: none;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--accent-soft);
    color: var(--accent);
    font-weight: 700;
    font-size: .95rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.materie-text, .capitol-card > span:last-child { display: block; }
.materie-card strong, .capitol-card strong { display: block; margin-bottom: 2px; }
.materie-card span span, .capitol-card span span { display: block; line-height: 1.5; }

/* corpul capitolului — tipografie pentru citit lung */

.continut {
    font-size: 1.02rem;
    line-height: 1.75;
}

/* Textul se citește mai ușor pe coloană îngustă, dar ilustrațiile și tabelele
   merită toată lățimea — mai ales diagramele cu legendă. */
.continut > p,
.continut > ul,
.continut > ol,
.continut > h2,
.continut > h3,
.continut > h4,
.continut > blockquote { max-width: 68ch; }

.continut > *:first-child { margin-top: 0; }
.continut p { margin: 0 0 1.1em; }

.continut h2 {
    margin: 1.9em 0 .6em;
    padding-bottom: .3em;
    border-bottom: 1px solid var(--line);
    font-size: 1.3rem;
}

.continut h3 { margin: 1.6em 0 .5em; font-size: 1.08rem; }
.continut h4 { margin: 1.4em 0 .4em; font-size: 1rem; color: var(--muted); }

.continut ul, .continut ol { margin: 0 0 1.1em; padding-left: 1.4em; }
.continut li { margin-bottom: .45em; }

.continut .ilustratie {
    margin: 1.8em 0;
    text-align: center;
}

.continut img {
    display: block;
    max-width: 100%;
    height: auto;
    margin: 1.6em auto;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #fff;
}

.continut .ilustratie img { margin: 0 auto; }

.continut hr { border: 0; border-top: 1px solid var(--line); margin: 2em 0; }

/* «De reținut» și celelalte note din manual */
.continut blockquote {
    margin: 1.5em 0;
    padding: 14px 18px;
    background: var(--accent-soft);
    border-left: 3px solid var(--accent);
    border-radius: 0 8px 8px 0;
}

.continut blockquote > *:last-child { margin-bottom: 0; }

.continut code {
    background: var(--accent-soft);
    padding: .1em .35em;
    border-radius: 4px;
    font-size: .92em;
}

.continut table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5em 0;
    font-size: .94rem;
}

.continut th, .continut td {
    border: 1px solid var(--line);
    padding: 9px 11px;
    text-align: left;
    vertical-align: top;
}

.continut th { background: var(--accent-soft); font-size: .85rem; }

/* tabelele late capătă derulare proprie, ca pagina să nu se lățească */
.continut .tabel-lat { overflow-x: auto; margin: 1.5em 0; }
.continut .tabel-lat table { margin: 0; }

/* navigarea dintre capitole */

.navigare-capitole {
    display: flex;
    gap: 12px;
    margin-top: 36px;
    padding-top: 20px;
    border-top: 1px solid var(--line);
}

.nav-capitol {
    flex: 1;
    padding: 13px 16px;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--ink);
    min-width: 0;
}

.nav-capitol:hover { border-color: var(--accent); color: var(--ink); }
.nav-capitol span { display: block; margin-bottom: 3px; }
.nav-capitol strong { display: block; }
.nav-capitol-dreapta { text-align: right; }

@media (max-width: 600px) {
    .continut { font-size: 1rem; }
    .navigare-capitole { flex-direction: column; }
    .nav-capitol-dreapta { text-align: left; }
}

/* ============================================================== testele === */

.materie-card-static { cursor: default; }
.materie-card-static:hover { border-color: var(--line); box-shadow: none; }

.materie-actiuni {
    margin-left: auto;
    display: flex;
    gap: 8px;
    align-items: center;
    flex: none;
}

.materie-actiuni form { display: inline; }

/* bara de progres la învățare */
.progres {
    height: 6px;
    background: var(--line);
    border-radius: 999px;
    overflow: hidden;
}

.progres span { display: block; height: 100%; background: var(--accent); }

/* întrebarea */

.intrebare-cap { display: flex; gap: 12px; align-items: flex-start; }

.intrebare-numar {
    flex: none;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--accent-soft);
    color: var(--accent);
    font-weight: 700;
    font-size: .88rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.intrebare-enunt { margin: 2px 0 0; font-weight: 600; line-height: 1.5; }

.ilustratie-test { margin: 16px 0; text-align: center; }

.ilustratie-test img {
    max-width: 100%;
    height: auto;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #fff;
}

.variante { list-style: none; margin: 14px 0 0; padding: 0; }

.varianta {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 10px 12px;
    border: 1px solid var(--line);
    border-radius: 8px;
    margin-bottom: 8px;
}

.varianta:hover { border-color: var(--accent); }
.varianta input { flex: none; margin-top: .3em; width: auto; }
.varianta label { font-weight: 400; margin: 0; cursor: pointer; flex: 1; line-height: 1.5; }

.varianta-corecta { border-color: var(--ok); background: color-mix(in srgb, var(--ok) 10%, var(--card)); }
.varianta-gresita { border-color: var(--err); background: color-mix(in srgb, var(--err) 10%, var(--card)); }

.semn { font-weight: 700; flex: none; }
.semn-corect { color: var(--ok); }
.semn-gresit { color: var(--err); }

.explicatie {
    margin-top: 14px;
    padding: 12px 15px;
    background: var(--accent-soft);
    border-left: 3px solid var(--accent);
    border-radius: 0 8px 8px 0;
    font-size: .94rem;
    line-height: 1.6;
}

.verdict-bun { color: var(--ok); font-weight: 600; }
.verdict-rau { color: var(--err); font-weight: 600; }

/* bara de examen, cu cronometru */

.examen-bara {
    position: sticky;
    top: 58px;
    z-index: 15;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 11px 0;
    margin-bottom: 14px;
    box-shadow: var(--shadow);
}

.cronometru {
    font-variant-numeric: tabular-nums;
    font-weight: 700;
    font-size: 1.2rem;
    padding: 4px 12px;
    border-radius: 8px;
    background: var(--accent-soft);
    color: var(--accent);
}

.cronometru-urgent {
    background: color-mix(in srgb, var(--err) 15%, var(--card));
    color: var(--err);
}

/* rezultatul */

.rezultat { text-align: center; }
.rezultat-bun { border-color: var(--ok); }
.rezultat-rau { border-color: var(--err); }

.rezultat-scor { margin: 12px 0 6px; }

.rezultat-procent {
    display: block;
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.1;
}

.rezultat-bun .rezultat-procent { color: var(--ok); }
.rezultat-rau .rezultat-procent { color: var(--err); }
.rezultat-verdict { font-weight: 600; margin: 10px 0 0; }
.rezultat .rand { justify-content: center; }

details summary { cursor: pointer; padding: 8px 0; }

@media (max-width: 600px) {
    .materie-actiuni { margin-left: 0; width: 100%; padding-left: 42px; }
    .examen-bara { position: static; }
    .rezultat-procent { font-size: 2.4rem; }
}