/*
Theme Name:   IAS UM6P
Theme URI:    https://ias.um6p.ma
Description:  Official theme for the IAS – Institute for Advanced Studies at UM6P.
              Lightweight, academic, accessible. Compatible with Elementor and the
              IAS Academic System plugin. Provides safe fallback templates for all
              existing content types before any redesign is applied.
Version:      1.0.0
Author:       Jabran Elalwani
Author URI:   https://www.linkedin.com/in/jabran-elalwani/
Text Domain:  ias-um6p
Requires PHP: 7.4
Requires at least: 6.0
Tested up to: 6.9
License:      GNU General Public License v2 or later
License URI:  https://www.gnu.org/licenses/gpl-2.0.html
Tags:         accessibility-ready, custom-colors, custom-logo, custom-menu,
              editor-style, featured-images, full-site-editing, block-styles,
              wide-blocks, translation-ready
*/

/* ─── CSS Custom Properties ───────────────────────────────────────────────── */
:root {
    /* Brand */
    --ias-navy:       #0A1628;
    --ias-dark:       #111827;
    --ias-blue:       #1A3BBF;
    --ias-blue-light: #3658D4;
    --ias-gold:       #C8940A;
    --ias-gold-light: #F0B429;
    --ias-white:      #FFFFFF;
    --ias-off-white:  #F8F9FA;

    /* Neutrals */
    --ias-gray-100: #F3F4F6;
    --ias-gray-200: #E5E7EB;
    --ias-gray-300: #D1D5DB;
    --ias-gray-400: #9CA3AF;
    --ias-gray-500: #6B7280;
    --ias-gray-600: #4B5563;
    --ias-gray-700: #374151;
    --ias-gray-800: #1F2937;
    --ias-gray-900: #111827;

    /* Typography */
    --ias-font-sans:  'Nunito Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --ias-font-serif: 'Nunito Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --ias-font-mono:  'JetBrains Mono', 'Fira Code', monospace;

    /* Scale */
    --ias-radius:    6px;
    --ias-radius-lg: 12px;
    --ias-shadow-sm: 0 1px 3px rgba(0,0,0,.08);
    --ias-shadow:    0 4px 12px rgba(0,0,0,.10);
    --ias-shadow-lg: 0 8px 32px rgba(0,0,0,.14);

    /* Layout */
    --ias-content-width:  1120px;
    --ias-wide-width:     1400px;
    --ias-sidebar-width:  280px;
}

/* ─── Reset / Base ────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    font-family: var(--ias-font-sans);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--ias-gray-700);
    background: var(--ias-white);
    -webkit-font-smoothing: antialiased;
}

img, video { max-width: 100%; height: auto; display: block; }
a {
    color: var(--ias-blue);
    text-decoration: none;
    transition: color 0.18s ease;
}
a:hover { color: var(--ias-navy); }
a:focus-visible {
    outline: 3px solid var(--ias-gold);
    outline-offset: 2px;
    border-radius: 2px;
}

/* ─── Layout ──────────────────────────────────────────────────────────────── */
.site {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.site-content { flex: 1; }

.container {
    max-width: var(--ias-content-width);
    margin: 0 auto;
    padding: 0 24px;
}

.container--wide {
    max-width: var(--ias-wide-width);
}

/* ─── Header ──────────────────────────────────────────────────────────────── */
.site-header {
    background: var(--ias-navy);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--ias-shadow);
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    max-width: var(--ias-wide-width);
    margin: 0 auto;
    padding: 0 24px;
}

.site-header__logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.site-header__logo img {
    height: 44px;
    width: auto;
}

.site-header__logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.site-header__logo-text .name {
    font-size: 15px;
    font-weight: 700;
    color: var(--ias-white);
    letter-spacing: 0.02em;
}

.site-header__logo-text .tagline {
    font-size: 11px;
    color: var(--ias-gray-400);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

/* ─── Primary Navigation ──────────────────────────────────────────────────── */
.primary-nav ul {
    display: flex;
    align-items: center;
    gap: 4px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.primary-nav a {
    display: block;
    padding: 8px 14px;
    font-size: 14px;
    font-weight: 500;
    color: var(--ias-gray-300);
    text-decoration: none;
    border-radius: var(--ias-radius);
    transition: background 0.15s, color 0.15s;
}

.primary-nav a:hover,
.primary-nav .current-menu-item > a,
.primary-nav .current-page-ancestor > a {
    background: rgba(255,255,255,0.08);
    color: var(--ias-white);
}

/* Sub-menus */
.primary-nav .sub-menu {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    min-width: 220px;
    background: var(--ias-dark);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--ias-radius);
    box-shadow: var(--ias-shadow-lg);
    display: none;
    z-index: 200;
    padding: 6px;
}

.primary-nav li:hover > .sub-menu,
.primary-nav li:focus-within > .sub-menu {
    display: block;
}

.primary-nav li { position: relative; }
.primary-nav .sub-menu a { border-radius: var(--ias-radius); }
.primary-nav .sub-menu li { padding: 0; }

/* Mobile toggle */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--ias-white);
    font-size: 24px;
    padding: 8px;
    border-radius: var(--ias-radius);
}

.nav-toggle:hover { background: rgba(255,255,255,0.1); }

/* ─── Hero / Banner ───────────────────────────────────────────────────────── */
.ias-hero {
    background: var(--ias-navy);
    color: var(--ias-white);
    padding: 80px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.ias-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 60% 40%, rgba(26,59,191,0.25) 0%, transparent 70%);
    pointer-events: none;
}

.ias-hero__title {
    font-family: var(--ias-font-sans);
    font-size: clamp(2rem, 4vw, 3.25rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin: 0 0 20px;
    position: relative;
}

.ias-hero__subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--ias-gray-400);
    max-width: 640px;
    margin: 0 auto 32px;
    position: relative;
}

/* ─── Content Area ────────────────────────────────────────────────────────── */
.site-main {
    padding: 56px 0;
}

/* ─── Entry Content ───────────────────────────────────────────────────────── */
.entry-content {
    max-width: 720px;
    margin: 0 auto;
}

.entry-content h1,
.entry-content h2,
.entry-content h3,
.entry-content h4 {
    font-family: var(--ias-font-sans);
    color: var(--ias-gray-900);
    line-height: 1.2;
    letter-spacing: -0.02em;
    font-weight: 800;
    margin-top: 2em;
    margin-bottom: 0.6em;
}

.entry-content h1 { font-size: 2.25rem; }
.entry-content h2 { font-size: 1.75rem; }
.entry-content h3 { font-size: 1.375rem; }
.entry-content h4 { font-size: 1.125rem; }

.entry-content p { margin-bottom: 1.4em; }

.entry-content a,
.entry-summary a,
.wp-block-post-content a,
.comment-content a {
    color: var(--ias-blue);
    text-decoration: underline;
    text-decoration-thickness: 1.5px;
    text-underline-offset: 0.18em;
}

.entry-content a:hover,
.entry-summary a:hover,
.wp-block-post-content a:hover,
.comment-content a:hover {
    color: var(--ias-blue-light);
}

.site-main [class^="ias-"] a,
.site-main [class*=" ias-"] a {
    text-decoration: none;
}

.entry-content blockquote {
    border-left: 4px solid var(--ias-gold);
    margin: 2em 0;
    padding: 1em 1.5em;
    background: var(--ias-gray-100);
    border-radius: 0 var(--ias-radius) var(--ias-radius) 0;
    font-style: italic;
    color: var(--ias-gray-600);
}

.entry-content code {
    font-family: var(--ias-font-mono);
    background: var(--ias-gray-100);
    padding: 0.15em 0.4em;
    border-radius: 3px;
    font-size: 0.875em;
}

.entry-content pre {
    background: var(--ias-gray-900);
    color: var(--ias-gray-100);
    padding: 1.5em;
    border-radius: var(--ias-radius);
    overflow-x: auto;
    font-family: var(--ias-font-mono);
    font-size: 0.875rem;
}

.entry-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 2em 0;
    font-size: 0.9375rem;
}

.entry-content th {
    background: var(--ias-navy);
    color: var(--ias-white);
    padding: 10px 14px;
    text-align: left;
    font-weight: 600;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.entry-content td {
    padding: 10px 14px;
    border-bottom: 1px solid var(--ias-gray-200);
}

.entry-content tr:nth-child(even) td { background: var(--ias-gray-100); }

/* ─── Buttons ─────────────────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 11px 24px;
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--ias-radius);
    border: 2px solid transparent;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.15s, color 0.15s, border-color 0.15s, transform 0.1s;
    white-space: nowrap;
}

.btn:focus-visible {
    outline: 3px solid var(--ias-gold);
    outline-offset: 2px;
}

.btn:active { transform: translateY(1px); }

.btn--primary {
    background: var(--ias-blue);
    color: var(--ias-white);
    border-color: var(--ias-blue);
}

.btn--primary:hover {
    background: #1734A7;
    color: var(--ias-white);
    border-color: #1734A7;
}

.btn--outline {
    background: transparent;
    color: var(--ias-blue);
    border-color: var(--ias-blue);
}

.btn--outline:hover {
    background: var(--ias-blue);
    color: var(--ias-white);
}

.btn--gold {
    background: var(--ias-gold);
    color: var(--ias-white);
    border-color: var(--ias-gold);
}

.btn--gold:hover {
    background: var(--ias-gold-light);
    border-color: var(--ias-gold-light);
    color: var(--ias-navy);
}

/* ─── Cards ───────────────────────────────────────────────────────────────── */
.card {
    background: var(--ias-white);
    border: 1px solid var(--ias-gray-200);
    border-radius: var(--ias-radius-lg);
    overflow: hidden;
    transition: box-shadow 0.2s, transform 0.2s;
}

.card:hover {
    box-shadow: var(--ias-shadow-lg);
    transform: translateY(-2px);
}

.card__img {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
}

.card__body {
    padding: 20px 24px;
}

.card__title {
    font-size: 1.125rem;
    font-weight: 700;
    margin: 0 0 8px;
    color: var(--ias-gray-900);
    line-height: 1.4;
}

.card__meta {
    font-size: 12px;
    color: var(--ias-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 10px;
}

.card__excerpt {
    font-size: 14px;
    color: var(--ias-gray-600);
    line-height: 1.6;
    margin: 0;
}

/* ─── Post Grid ───────────────────────────────────────────────────────────── */
.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 28px;
}

/* ─── Pagination ──────────────────────────────────────────────────────────── */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 6px;
    margin-top: 48px;
    flex-wrap: wrap;
}

.pagination .page-numbers {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--ias-radius);
    border: 1px solid var(--ias-gray-300);
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
    color: var(--ias-gray-700);
    transition: background 0.15s, color 0.15s;
}

.pagination .page-numbers.current,
.pagination .page-numbers:hover {
    background: var(--ias-blue);
    border-color: var(--ias-blue);
    color: var(--ias-white);
}

/* ─── Footer ──────────────────────────────────────────────────────────────── */
.site-footer {
    background: var(--ias-navy);
    color: var(--ias-gray-400);
    padding: 56px 0 24px;
}

.site-footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 48px;
}

.site-footer__brand .logo {
    margin-bottom: 16px;
}

.site-footer__brand p {
    font-size: 14px;
    line-height: 1.7;
    max-width: 300px;
}

.site-footer__col h3 {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--ias-white);
    margin-bottom: 16px;
}

.site-footer__col ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.site-footer__col ul li { margin-bottom: 10px; }

.site-footer__col a {
    color: var(--ias-gray-400);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.15s;
}

.site-footer__col a:hover { color: var(--ias-white); }

.site-footer__bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    flex-wrap: wrap;
    gap: 12px;
}

/* ─── Breadcrumbs ─────────────────────────────────────────────────────────── */
.breadcrumbs {
    font-size: 13px;
    color: var(--ias-gray-500);
    padding: 12px 0;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
}

.breadcrumbs a { color: var(--ias-gray-500); text-decoration: none; }
.breadcrumbs a:hover { color: var(--ias-blue); }
.breadcrumbs .sep { color: var(--ias-gray-400); }

/* ─── Page Header ─────────────────────────────────────────────────────────── */
.page-header {
    background: var(--ias-off-white);
    border-bottom: 1px solid var(--ias-gray-200);
    padding: 40px 0;
    margin-bottom: 48px;
}

.page-header__title {
    font-family: var(--ias-font-serif);
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    color: var(--ias-gray-900);
    margin: 0;
}

.page-header__subtitle {
    font-size: 1.0625rem;
    color: var(--ias-gray-500);
    margin: 8px 0 0;
}

/* ─── Sidebar ─────────────────────────────────────────────────────────────── */
.content-sidebar-wrap {
    display: grid;
    grid-template-columns: 1fr var(--ias-sidebar-width);
    gap: 48px;
    align-items: start;
}

.widget {
    margin-bottom: 32px;
}

.widget-title {
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--ias-gray-900);
    border-bottom: 2px solid var(--ias-blue);
    padding-bottom: 10px;
    margin-bottom: 16px;
}

/* ─── Tag / Badge ─────────────────────────────────────────────────────────── */
.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 100px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.badge--blue   { background: #EEF2FF; color: var(--ias-blue); }
.badge--gold   { background: #FEF9C3; color: #92400E; }
.badge--green  { background: #ECFDF5; color: #065F46; }
.badge--gray   { background: var(--ias-gray-100); color: var(--ias-gray-600); }
.badge--navy   { background: var(--ias-navy); color: var(--ias-white); }

/* ─── Skip link (accessibility) ──────────────────────────────────────────── */
.skip-link {
    position: absolute;
    left: -9999px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
    z-index: 9999;
}

.skip-link:focus {
    left: 12px;
    top: 12px;
    width: auto;
    height: auto;
    background: var(--ias-gold);
    color: var(--ias-navy);
    font-weight: 700;
    padding: 10px 20px;
    border-radius: var(--ias-radius);
    text-decoration: none;
}

/* ─── Elementor Integration ───────────────────────────────────────────────── */
.elementor-page .site-main {
    padding: 0;
}

.elementor-page .page-header { display: none; }

/* ─── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
    .site-footer__grid {
        grid-template-columns: 1fr 1fr;
    }

    .content-sidebar-wrap {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .primary-nav {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--ias-navy);
        border-top: 1px solid rgba(255,255,255,0.1);
        padding: 12px 16px;
    }

    .primary-nav.is-open { display: block; }

    .primary-nav ul {
        flex-direction: column;
        align-items: stretch;
    }

    .primary-nav .sub-menu {
        position: static;
        box-shadow: none;
        border: none;
        background: rgba(255,255,255,0.04);
        display: none;
        padding-left: 16px;
    }

    .primary-nav li.is-open > .sub-menu { display: block; }

    .nav-toggle { display: flex; }

    .site-header { position: relative; }

    .site-footer__grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .site-footer__bottom {
        flex-direction: column;
        text-align: center;
    }

    .posts-grid {
        grid-template-columns: 1fr;
    }

    .ias-hero { padding: 56px 0; }
}

@media (max-width: 480px) {
    .container { padding: 0 16px; }
    .entry-content h1 { font-size: 1.75rem; }
    .entry-content h2 { font-size: 1.375rem; }
}

/* ─── WordPress Core Classes ──────────────────────────────────────────────── */
.alignleft  { float: left; margin: 0 24px 16px 0; }
.alignright { float: right; margin: 0 0 16px 24px; }
.aligncenter { display: block; margin: 0 auto 16px; }
.alignwide   { margin-left: -80px; margin-right: -80px; }
.alignfull   { margin-left: calc(50% - 50vw); margin-right: calc(50% - 50vw); width: 100vw; }

.wp-caption { max-width: 100%; }
.wp-caption-text { font-size: 13px; color: var(--ias-gray-500); text-align: center; margin-top: 6px; }

.screen-reader-text {
    border: 0;
    clip: rect(1px, 1px, 1px, 1px);
    clip-path: inset(50%);
    height: 1px;
    margin: -1px;
    overflow: hidden;
    padding: 0;
    position: absolute;
    width: 1px;
    word-wrap: normal !important;
}