/* =========================================================
   سامانه اساتید دانشگاه شمال - استایل مشترک طراحی جدید
   ========================================================= */

@font-face { font-family: Vazirmatn; src: url("../fonts/vazirmatn/Vazirmatn-Regular.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: Vazirmatn; src: url("../fonts/vazirmatn/Vazirmatn-Medium.woff2") format("woff2"); font-weight: 500; font-display: swap; }
@font-face { font-family: Vazirmatn; src: url("../fonts/vazirmatn/Vazirmatn-Bold.woff2") format("woff2"); font-weight: 700; font-display: swap; }
@font-face { font-family: Vazirmatn; src: url("../fonts/vazirmatn/Vazirmatn-ExtraBold.woff2") format("woff2"); font-weight: 800; font-display: swap; }

:root {
    --ink: #17212B;
    --text-2: #33404D;
    --muted: #5B6675;
    --line: #E2E8F0;
    --line-2: #D5DDE6;
    --line-soft: #EEF2F6;
    --bg: #F5F7FA;
    --surface: #FFFFFF;
    --surface-2: #F0F4F8;
    --primary: #0A5FA8;
    --primary-dark: #073F70;
    --primary-soft: #EAF2FB;
    --navy: #0B2A4A;
    --navy-line: #23415F;
    --navy-overlay: rgba(8, 31, 56, 0.72);
    --navy-overlay-strong: rgba(8, 31, 56, 0.84);
    --on-navy: #D3E3F3;
    --on-navy-muted: #9FB6CC;
    --sky: #9CC6EC;
    --photo-bg: #DCE7F3;
    --ok: #1E6B3A;
    --ok-bg: #EAF5EE;
    --warn: #9A3412;
    --warn-bg: #FDF0E7;
    --danger: #B42318;
    --danger-bg: #FDECEA;
    --radius-sm: 10px;
    --radius: 14px;
    --radius-lg: 20px;
    --font: Vazirmatn, Shabnam, Tahoma, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

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

body {
    margin: 0;
    font-family: var(--font);
    font-size: 15px;
    line-height: 1.8;
    color: var(--ink);
    background: var(--bg);
}

img { max-width: 100%; }
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
h1, h2, h3, h4 { line-height: 1.5; margin: 0; }
p { margin: 0; }

:focus-visible { outline: 3px solid var(--sky); outline-offset: 2px; }

.visually-hidden {
    position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.skip-link {
    position: absolute; inset-inline-start: 16px; top: -60px; z-index: 100;
    background: var(--navy); color: #fff; padding: 10px 16px; border-radius: var(--radius-sm);
}
.skip-link:focus { top: 12px; color: #fff; }

.container { max-width: 1200px; margin: 0 auto; padding-inline: 24px; }
@media (max-width: 600px) { .container { padding-inline: 16px; } }

.icon { width: 18px; height: 18px; flex: none; }
.icon-sm { width: 14px; height: 14px; flex: none; }

/* ---------- Header ---------- */
.site-header { background: var(--surface); border-bottom: 1px solid var(--line); }
.site-header__inner {
    display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
    gap: 12px 16px; padding-block: 12px;
}
.brand { display: flex; align-items: center; gap: 12px; color: var(--ink); }
.brand:hover { color: var(--ink); }
.brand__logo { height: 52px; width: auto; display: block; }
.brand__divider { width: 1px; height: 36px; background: var(--line-2); }
.brand__name { font-size: 15px; font-weight: 700; color: var(--navy); white-space: nowrap; }
@media (max-width: 600px) {
    .brand__logo { height: 42px; }
    .brand__divider, .brand__name { display: none; }
}

.site-nav { display: flex; flex-wrap: wrap; align-items: center; gap: 4px; }
.site-nav a, .site-nav button {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 9px 14px; border-radius: var(--radius-sm); font-size: 15px;
    color: var(--text-2); background: transparent; border: 0; cursor: pointer; min-height: 44px;
}
.site-nav a:hover, .site-nav button:hover { background: var(--surface-2); color: var(--ink); }
.site-nav a.is-active { background: var(--primary-soft); color: var(--primary); font-weight: 700; }
.site-nav .nav-cta { border: 1px solid var(--primary); color: var(--primary); font-weight: 700; margin-inline-start: 6px; }
.site-nav .nav-cta:hover { background: var(--primary); color: #fff; }
.site-nav form { margin: 0; }

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    min-height: 44px; padding: 10px 20px; border-radius: 12px; border: 1px solid transparent;
    font-size: 15px; font-weight: 700; cursor: pointer; text-align: center; line-height: 1.5;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); color: #fff; }
.btn-outline { background: var(--surface); border-color: var(--line-2); color: var(--ink); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-ghost { background: transparent; color: var(--primary); padding-inline: 8px; }
.btn-danger-outline { background: var(--surface); border-color: #F1C9B5; color: var(--warn); }
.btn-sm { min-height: 36px; padding: 6px 12px; font-size: 13px; border-radius: 8px; }
.btn[disabled], .btn.is-disabled { opacity: .5; pointer-events: none; }

/* ---------- Banners (campus photo) ---------- */
.banner { position: relative; overflow: hidden; background: var(--navy); color: #fff; }
.banner__photo { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center 55%; }
.banner__overlay { position: absolute; inset: 0; background: var(--navy-overlay-strong); }
.banner--hero .banner__overlay { background: var(--navy-overlay); }
.banner__content { position: relative; display: flex; flex-direction: column; gap: 10px; padding-block: 40px 76px; }
.banner--hero .banner__content { gap: 20px; padding-block: 88px 80px; }
.banner--slim .banner__content { padding-block: 24px 120px; }
.banner h1 { font-size: 34px; font-weight: 800; }
.banner--hero h1 { font-size: 44px; line-height: 1.35; max-width: 760px; }
.banner__lead { color: var(--on-navy); font-size: 16px; max-width: 640px; }
.banner--hero .banner__lead { font-size: 18px; line-height: 1.9; }
.banner__eyebrow { color: var(--sky); font-weight: 500; }
@media (max-width: 600px) {
    .banner h1 { font-size: 26px; }
    .banner--hero h1 { font-size: 30px; }
    .banner--hero .banner__content { padding-block: 56px 56px; }
    .stats { margin-top: 24px; }
}

.breadcrumb { display: flex; flex-wrap: wrap; gap: 8px; font-size: 14px; color: var(--sky); }
.breadcrumb a { color: var(--sky); }
.breadcrumb a:hover { color: #fff; }

/* ---------- Search ---------- */
.hero-search {
    margin-top: 12px; background: var(--surface); border-radius: 16px; padding: 8px;
    display: flex; flex-wrap: wrap; gap: 8px; max-width: 760px;
}
.segmented { display: flex; gap: 4px; background: var(--surface-2); border-radius: 12px; padding: 4px; }
.segmented label { position: relative; }
.segmented input { position: absolute; opacity: 0; inset: 0; cursor: pointer; }
.segmented span {
    display: block; border-radius: 9px; padding: 8px 16px; font-size: 15px; color: var(--muted); cursor: pointer;
}
.segmented input:checked + span { background: var(--surface); color: var(--navy); font-weight: 700; box-shadow: 0 1px 2px rgba(11, 42, 74, .12); }
.segmented input:focus-visible + span { outline: 3px solid var(--sky); }
.hero-search__input {
    flex: 1 1 240px; min-width: 0; border: 0; outline: none; font-size: 16px;
    padding: 12px 14px; color: var(--ink); background: transparent;
}
.chips-row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; font-size: 14px; color: var(--on-navy); }
.chip-link { padding: 6px 12px; border-radius: 999px; border: 1px solid #355577; color: #fff; }
.chip-link:hover { background: rgba(255, 255, 255, .1); color: #fff; }

/* ---------- Cards & sections ---------- */
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; }
.card-pad { padding: 20px; }
.section { padding-block: 56px 24px; display: flex; flex-direction: column; gap: 24px; }
.section-head { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 12px; }
.section-head h2 { font-size: 26px; font-weight: 800; }
.section-head p { color: var(--muted); }
.overlap { margin-top: -44px; position: relative; }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); margin-top: 32px; position: relative; }
.stats > div { padding: 22px 28px; display: flex; flex-direction: column; gap: 2px; }
.stats > div + div { border-inline-start: 1px solid var(--line); }
.stats strong { font-size: 30px; color: var(--navy); line-height: 1.4; }
.stats span { color: var(--muted); }
@media (max-width: 600px) { .stats > div + div { border-inline-start: 0; border-top: 1px solid var(--line); } }

.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.grid-4 { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 20px; }

.college-card { padding: 24px; display: flex; flex-direction: column; gap: 16px; color: var(--ink); }
.college-card:hover { border-color: var(--primary); color: var(--ink); }
.college-card__icon {
    width: 48px; height: 48px; border-radius: 12px; background: var(--primary-soft); color: var(--primary);
    display: flex; align-items: center; justify-content: center;
}
.college-card strong { font-size: 19px; }
.college-card__groups { font-size: 14px; color: var(--muted); }
.college-card__meta { display: flex; gap: 16px; font-size: 14px; color: var(--text-2); border-top: 1px solid var(--line-soft); padding-top: 14px; }

/* ---------- Faculty photo: one 3:4 ratio everywhere, never stretched ---------- */
.person-photo {
    display: block; aspect-ratio: 3 / 4; width: 90px; height: auto;
    object-fit: cover; object-position: center top;
    border-radius: 12px; background: var(--photo-bg); flex: none;
}
.person-photo--md { width: 120px; border-radius: 14px; }
.person-photo--lg { width: 180px; border-radius: 16px; }
.person-photo--sm { width: 72px; border-radius: 10px; }
@media (max-width: 600px) { .person-photo--lg { width: 132px; } }

.badge {
    display: inline-block; font-size: 12px; font-weight: 700; color: var(--primary);
    background: var(--primary-soft); border-radius: 999px; padding: 2px 10px; line-height: 1.8;
}
.badge-lg { font-size: 13px; padding: 3px 12px; }

.person-card { display: flex; gap: 16px; padding: 18px; color: var(--ink); height: 100%; }
.person-card:hover { border-color: var(--primary); color: var(--ink); }
.person-card__body { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 6px; }
.person-card__name { font-size: 17px; font-weight: 700; }
.person-card__row { display: flex; flex-wrap: wrap; gap: 6px 8px; align-items: center; font-size: 14px; color: var(--muted); }
.person-card__pos { font-size: 13px; color: var(--text-2); line-height: 1.7; }
.person-card__links { display: flex; flex-wrap: wrap; gap: 12px; margin-top: auto; padding-top: 4px; font-size: 12px; color: var(--muted); }
.person-card__links span { display: inline-flex; align-items: center; gap: 4px; }

.person-tile { padding: 24px 20px; display: flex; flex-direction: column; align-items: center; gap: 8px; text-align: center; color: var(--ink); }
.person-tile:hover { border-color: var(--primary); color: var(--ink); }
.person-tile strong { font-size: 17px; margin-top: 6px; }
.person-tile span.muted { font-size: 14px; color: var(--muted); }

.people-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 16px; }
@media (max-width: 420px) { .people-grid { grid-template-columns: 1fr; } }

.group-block { display: flex; flex-direction: column; gap: 14px; }
.group-block + .group-block { margin-top: 32px; }
.group-block__title { display: flex; align-items: baseline; gap: 10px; font-size: 19px; font-weight: 800; }
.group-block__title small { font-size: 14px; font-weight: 500; color: var(--muted); }

/* ---------- Filters ---------- */
.filters { padding: 16px; display: flex; flex-direction: column; gap: 14px; }
.filters__row { display: flex; flex-wrap: wrap; gap: 10px; }
.field-inline {
    display: flex; align-items: center; gap: 8px; border: 1px solid var(--line-2); border-radius: 12px;
    padding: 0 14px; font-size: 14px; color: var(--muted); background: var(--surface);
}
.field-inline--grow { flex: 1 1 300px; }
.field-inline input, .field-inline select {
    flex: 1; min-width: 0; border: 0; outline: none; font-size: 15px; padding: 11px 0;
    background: transparent; color: var(--ink);
}
.field-inline:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }
.pill-group { display: flex; flex-wrap: wrap; gap: 8px; }
.pill {
    display: inline-flex; align-items: center; gap: 4px; min-height: 44px; border: 1px solid var(--line-2);
    background: var(--surface); color: var(--text-2); border-radius: 999px; padding: 8px 16px; font-size: 14px;
}
.pill:hover { border-color: var(--navy); color: var(--navy); }
.pill.is-active { background: var(--navy); border-color: var(--navy); color: #fff; font-weight: 700; }
.pill .count { opacity: .75; }
.result-count { color: var(--muted); }
.result-count strong { color: var(--ink); }

.empty-state { padding: 48px 24px; text-align: center; color: var(--muted); display: flex; flex-direction: column; gap: 12px; align-items: center; }
.empty-state strong { color: var(--ink); font-size: 18px; }

/* ---------- Profile ---------- */
.identity { margin-top: -104px; position: relative; padding: 28px; display: flex; flex-wrap: wrap; gap: 28px; align-items: center; border-radius: var(--radius-lg); }
.identity__main { flex: 1 1 360px; min-width: 0; display: flex; flex-direction: column; gap: 10px; }
.identity__name { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.identity__name h1 { font-size: 30px; font-weight: 800; }
.identity__pos { font-size: 16px; color: var(--text-2); }
.identity__meta { display: flex; flex-wrap: wrap; gap: 8px 18px; font-size: 14px; color: var(--muted); }
.identity__meta span { display: inline-flex; align-items: center; gap: 6px; }
.identity__actions { flex: 1 1 260px; display: flex; flex-wrap: wrap; gap: 10px; justify-content: flex-end; }
@media (max-width: 700px) {
    .identity { padding: 20px; gap: 18px; }
    .identity__name h1 { font-size: 24px; }
    .identity__actions { justify-content: flex-start; }
}

.profile-body { padding-block: 24px 72px; display: flex; flex-wrap: wrap; gap: 24px; align-items: flex-start; }
.profile-main { flex: 999 1 560px; min-width: 0; display: flex; flex-direction: column; gap: 16px; }
.profile-side { flex: 1 1 300px; min-width: 0; display: flex; flex-direction: column; gap: 16px; }

.tabs { display: flex; flex-wrap: wrap; gap: 6px; padding: 6px; border-radius: var(--radius); }
.tab {
    border: 0; background: transparent; color: var(--text-2); border-radius: var(--radius-sm);
    padding: 9px 14px; font-size: 15px; cursor: pointer; min-height: 44px; display: inline-flex; align-items: center; gap: 6px;
}
.tab:hover { background: var(--surface-2); }
.tab[aria-selected="true"] { background: var(--navy); color: #fff; font-weight: 700; }
.tab__count { font-size: 12px; background: var(--line-soft); color: var(--text-2); border-radius: 999px; padding: 0 8px; }
.tab[aria-selected="true"] .tab__count { background: #23476B; color: #fff; }
.tab-panel { display: flex; flex-direction: column; gap: 12px; }
.tab-panel[hidden] { display: none; }

.item { padding: 20px; display: flex; flex-direction: column; gap: 10px; }
.item h3 { font-size: 17px; font-weight: 700; line-height: 1.8; }
.item__date { font-size: 13px; color: var(--muted); }
.item__text { color: var(--text-2); line-height: 1.9; white-space: pre-line; }
.item__row { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 16px; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; font-size: 13px; color: var(--text-2); }
.tags span { background: var(--surface-2); border-radius: 8px; padding: 3px 10px; }
.facts { margin: 0; display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; font-size: 14px; }
.facts dt { color: var(--muted); }
.facts dd { margin: 0; color: var(--ink); }

.timeline-item { padding: 20px; display: flex; gap: 16px; }
.timeline-item__year { flex: none; width: 64px; font-weight: 800; color: var(--primary); }
.timeline-item__body { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.timeline-item__body strong { font-size: 16px; }

.table-wrap { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 520px; }
.table th { background: var(--bg); color: var(--muted); font-weight: 700; text-align: start; padding: 12px 16px; }
.table td { padding: 13px 16px; border-top: 1px solid var(--line-soft); }

.gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 12px; }
.gallery a { display: block; border-radius: 12px; overflow: hidden; background: var(--photo-bg); aspect-ratio: 4 / 3; }
.gallery img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .2s; }
.gallery a:hover img { transform: scale(1.03); }

.lightbox { border: 0; padding: 0; background: transparent; max-width: 92vw; max-height: 92vh; }
.lightbox::backdrop { background: rgba(8, 18, 30, .85); }
.lightbox img { max-width: 92vw; max-height: 86vh; display: block; border-radius: 10px; }
.lightbox button { margin: 10px auto 0; display: flex; }

/* ---------- Forms ---------- */
.form-stack { display: flex; flex-direction: column; gap: 12px; }
.field { display: flex; flex-direction: column; gap: 6px; font-size: 14px; color: var(--text-2); }
.field .hint { font-size: 12px; color: var(--muted); }
.input, .select, .textarea {
    width: 100%; border: 1px solid var(--line-2); border-radius: var(--radius-sm); padding: 10px 12px;
    font-size: 15px; color: var(--ink); background: var(--surface);
}
.input:focus, .select:focus, .textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }
.input[disabled] { background: var(--bg); color: var(--muted); border-color: var(--line); }
.textarea { resize: vertical; min-height: 110px; }
.field-error { font-size: 13px; color: var(--danger); }
.is-invalid { border-color: var(--danger) !important; }

.alert { border-radius: 12px; padding: 12px 16px; font-size: 14px; }
.alert-success { background: var(--ok-bg); color: var(--ok); }
.alert-danger { background: var(--danger-bg); color: var(--danger); }
.alert ul { margin: 0; padding-inline-start: 18px; }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy); color: var(--on-navy); margin-top: auto; }
.site-footer a { color: var(--on-navy); }
.site-footer a:hover { color: #fff; }
.site-footer__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 28px; padding-block: 44px 24px; font-size: 14px; }
.site-footer__grid > div { display: flex; flex-direction: column; gap: 8px; }
.site-footer__grid strong { color: #fff; font-size: 16px; }
.site-footer__logo { height: 52px; width: auto; align-self: flex-start; background: #fff; border-radius: 10px; padding: 4px 10px; }
.site-footer__bottom {
    border-top: 1px solid var(--navy-line); padding-block: 16px 24px; font-size: 13px; color: var(--on-navy-muted);
    display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 24px;
}
.site-footer__bottom a { color: var(--on-navy-muted); }

.page { min-height: 100vh; display: flex; flex-direction: column; }
.page main { flex: 1; }
.muted { color: var(--muted); }
.ltr { direction: ltr; unicode-bidi: isolate; }