/* ══════════════════════════════════════════════════════════════════════════
   DigintoTech.Web — Global Stylesheet
   Inspired by pixam.io & logic.diginto.tech — clean, precise, professional
   ══════════════════════════════════════════════════════════════════════════ */

/* ── Design Tokens ──────────────────────────────────────────────────────── */
:root {
    /* Brand — Indigo (PIXAM) */
    --dt-primary:         #4f46e5;
    --dt-primary-hover:   #4338ca;
    --dt-primary-active:  #3730a3;
    --dt-primary-light:   #ede9fe;
    --dt-primary-muted:   rgba(79,70,229,.14);
    --dt-primary-glow:    rgba(79,70,229,.22);

    /* Secondary — Sky (precision / tech) */
    --dt-blue:            #0284c7;
    --dt-blue-light:      #e0f2fe;
    --dt-blue-muted:      rgba(2,132,199,.12);

    /* GNSS / Accent — Orange */
    --dt-orange:          #ea580c;
    --dt-orange-light:    #ffedd5;
    --dt-orange-muted:    rgba(234,88,12,.12);

    /* News — Amber (warmth / journalism) */
    --dt-amber:           #d97706;
    --dt-amber-light:     #fef3c7;
    --dt-amber-muted:     rgba(217,119,6,.12);

    /* Danger / REEF */
    --dt-red:             #dc2626;
    --dt-red-light:       #fee2e2;

    /* Neutrals — deep navy family */
    --dt-navy:            #0c1220;   /* navbar */
    --dt-navy-mid:        #0e1829;   /* mobile nav panel */
    --dt-dark:            #0f172a;   /* darkest hero */
    --dt-dark-2:          #1e293b;   /* medium dark */
    --dt-dark-3:          #334155;   /* lighter dark */
    --dt-slate:           #475569;

    /* Surfaces (light side) */
    --dt-surface:         #f8fafc;   /* lightest section bg */
    --dt-surface-2:       #f1f5f9;   /* cards / inputs */
    --dt-surface-3:       #e2e8f0;   /* dividers */
    --dt-white:           #ffffff;

    /* Text */
    --dt-text:            #0f172a;
    --dt-text-muted:      #64748b;
    --dt-text-sub:        #94a3b8;
    --dt-text-inverse:    #ffffff;

    /* Borders */
    --dt-border:          rgba(0,0,0,.065);
    --dt-border-dark:     rgba(255,255,255,.085);

    /* Shadows */
    --dt-shadow-xs:       0 1px 2px rgba(0,0,0,.06);
    --dt-shadow-sm:       0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
    --dt-shadow:          0 4px 16px rgba(0,0,0,.09);
    --dt-shadow-md:       0 6px 24px rgba(0,0,0,.11);
    --dt-shadow-lg:       0 12px 40px rgba(0,0,0,.14);
    --dt-shadow-indigo:   0 8px 32px rgba(79,70,229,.20);
    --dt-shadow-orange:   0 8px 32px rgba(234,88,12,.20);

    /* Radius */
    --dt-radius-sm:       .4rem;
    --dt-radius:          .65rem;
    --dt-radius-lg:       .85rem;
    --dt-radius-xl:       1.25rem;
    --dt-radius-pill:     9999px;

    /* Transitions */
    --dt-ease:            .22s ease;
    --dt-ease-slow:       .35s ease;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont,
                 'Helvetica Neue', Arial, sans-serif;
    color: var(--dt-text);
    background: var(--dt-white);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Section headings — tighter tracking on display sizes */
h1, h2, h3, h4, h5, h6 {
    letter-spacing: -.015em;
    line-height: 1.25;
}
.display-4, .display-5, .display-6 { letter-spacing: -.02em; }

/* Overline / eyebrow label (e.g. "Open Hardware" above h2) */
.dt-overline {
    font-size: .72rem;
    font-weight: 600;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--dt-orange);
}

/* Section eyebrow overlines — all uppercase/semibold/small <p> labels → orange.
   Overrides Bootstrap text-muted / text-secondary on all pages globally. */
p.text-uppercase.fw-semibold.small,
p.text-uppercase.text-muted.fw-semibold.small,
p.text-uppercase.text-secondary.fw-semibold.small {
    color: var(--dt-orange) !important;
}

/* ── Bootstrap Overrides ───────────────────────────────────────────────── */

/* Primary button — indigo */
.btn-primary {
    background-color: var(--dt-primary);
    border-color:     var(--dt-primary);
    color: #fff;
}
.btn-primary:hover, .btn-primary:focus {
    background-color: var(--dt-primary-hover);
    border-color:     var(--dt-primary-hover);
    color: #fff;
}
.btn-primary:active {
    background-color: var(--dt-primary-active) !important;
    border-color:     var(--dt-primary-active) !important;
}

/* Card — tighter, cleaner default */
.card {
    border-color: var(--dt-border);
}

/* ── Section Backgrounds ───────────────────────────────────────────────── */
.dt-bg-surface  { background: var(--dt-surface); }
.dt-bg-surface2 { background: var(--dt-surface-2); }
.dt-bg-dark     { background: var(--dt-dark); }
.dt-bg-navy     { background: var(--dt-navy); }

/* ── Page Hero (inner pages) ───────────────────────────────────────────── */
.page-hero {
    background: linear-gradient(135deg, var(--dt-dark) 0%, #1a1a3e 55%, var(--dt-dark) 100%);
    position: relative;
    overflow: hidden;
}
.page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 60% 80% at 70% 50%, rgba(234,88,12,.15) 0%, transparent 70%);
    pointer-events: none;
}

/* Hero section (home) */
.hero-section {
    min-height: 78vh;
    background-size: cover;
    background-position: center;
    position: relative;
}
.hero-section .overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,.58);
}

/* ── Card images ───────────────────────────────────────────────────────── */
.card img {
    height: 220px;
    object-fit: cover;
}

/* ── Article / News content ─────────────────────────────────────────────── */
.article-content {
    max-width: 860px;
    line-height: 1.85;
    font-size: 1.05rem;
}
.article-content img       { max-width: 100%; height: auto; }
.article-content h2,
.article-content h3,
.article-content h4        { margin-top: 2rem; margin-bottom: 1rem; }

/* ── Footer ─────────────────────────────────────────────────────────────── */
footer a { text-decoration: none; }
footer a:hover { text-decoration: underline; }

/* ── News / Articles ─────────────────────────────────────────────────────── */

/* Featured card lift */
.news-featured-card {
    transition: box-shadow var(--dt-ease);
    border-radius: var(--dt-radius-lg) !important;
    overflow: hidden;
}
.news-featured-card:hover { box-shadow: var(--dt-shadow-lg) !important; }

/* Article grid card */
.news-card {
    border-radius: var(--dt-radius-lg) !important;
    overflow: hidden;
    transition: transform var(--dt-ease), box-shadow var(--dt-ease);
}
.news-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--dt-shadow-md) !important;
}

/* Card image wrapper */
.news-card-img-wrap {
    position: relative;
    height: 200px;
    overflow: hidden;
}
.news-card-img {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform var(--dt-ease-slow);
}
.news-card:hover .news-card-img { transform: scale(1.04); }

.news-card-badge {
    position: absolute;
    bottom: .65rem;
    left: .75rem;
    font-size: .7rem;
    letter-spacing: .04em;
}

/* Title clamp */
.news-card-title {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.45;
}

/* "Read more" arrow */
.news-read-link .bi-arrow-right {
    transition: transform .2s ease;
    display: inline-block;
}
.news-read-link:hover .bi-arrow-right { transform: translateX(4px); }

/* Pagination */
.sticky-top::-webkit-scrollbar { display: none; }
.pagination .page-link {
    font-size: .875rem;
    min-width: 2.1rem;
    text-align: center;
    border-radius: var(--dt-radius-sm) !important;
}
.pagination .active .page-link {
    background: var(--dt-primary) !important;
    border-color: var(--dt-primary) !important;
}

/* ── PIXAM Stories ──────────────────────────────────────────────────────── */

/* Deep indigo hero */
.pixam-hero {
    background: linear-gradient(135deg, #1e1b4b 0%, #312e81 60%, #1e1b4b 100%);
    position: relative;
    overflow: hidden;
}
.pixam-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 50% 80% at 30% 60%, rgba(165,180,252,.12) 0%, transparent 70%);
    pointer-events: none;
}

/* Featured story card */
.pixam-featured-card {
    border-radius: var(--dt-radius-lg) !important;
    overflow: hidden;
    transition: box-shadow var(--dt-ease);
}
.pixam-featured-card:hover { box-shadow: 0 12px 40px var(--dt-primary-glow) !important; }

/* Filter pills */
.pixam-filter-active {
    background: var(--dt-primary) !important;
    color: #fff !important;
    border-color: var(--dt-primary) !important;
}
.pixam-filter-active:hover {
    background: var(--dt-primary-hover) !important;
    border-color: var(--dt-primary-hover) !important;
}

/* Read link */
.pixam-read-link         { color: var(--dt-primary) !important; }
.pixam-read-link:hover   { color: var(--dt-primary-hover) !important; }

/* Pagination */
.pixam-page-active { background: var(--dt-primary) !important; }

/* Project strip links */
.pixam-proj-link {
    color: #a5b4fc;
    font-size: .875rem;
    font-weight: 500;
    transition: color var(--dt-ease);
}
.pixam-proj-link:hover { color: #fff; }

/* ── Home page ──────────────────────────────────────────────────────────── */

/* Hero robot tiles */
.home-hero-tile img { transition: transform var(--dt-ease-slow); }
.home-hero-tile:hover img { transform: scale(1.06); }

/* Platform pillar cards */
.home-pillar-card {
    border-radius: var(--dt-radius-lg) !important;
    transition: transform var(--dt-ease), box-shadow var(--dt-ease);
    border-color: var(--dt-border) !important;
}
.home-pillar-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--dt-shadow-md) !important;
}

/* Robot showcase cards */
.home-robot-card {
    border-radius: var(--dt-radius-lg) !important;
    transition: transform var(--dt-ease), box-shadow var(--dt-ease);
    border-color: var(--dt-border) !important;
}
.home-robot-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--dt-shadow-lg) !important;
}
.home-robot-card:hover .home-robot-img { transform: scale(1.06); }

/* News article cards */
.home-article-card {
    border-radius: var(--dt-radius-lg) !important;
    transition: transform var(--dt-ease), box-shadow var(--dt-ease);
    border-color: var(--dt-border) !important;
}
.home-article-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--dt-shadow-md) !important;
}
.home-article-card:hover img { transform: scale(1.05); }

/* PIXAM story cards */
.home-story-card {
    border-radius: var(--dt-radius-lg) !important;
    transition: transform var(--dt-ease), box-shadow var(--dt-ease);
}
.home-story-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 36px var(--dt-primary-glow) !important;
}
.home-story-card:hover img { transform: scale(1.05); }

/* Audience tiles */
.home-audience-card {
    border-radius: var(--dt-radius-lg) !important;
    transition: transform var(--dt-ease), box-shadow var(--dt-ease);
    border-color: var(--dt-border) !important;
}
.home-audience-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--dt-shadow-md) !important;
}

/* YouTube card */
.home-yt-card { border-radius: var(--dt-radius-lg); overflow: hidden; }
.home-yt-card:hover img          { transform: scale(1.05); }
.home-yt-card:hover > div        { background: rgba(0,0,0,.22) !important; }

/* ── Navbar ─────────────────────────────────────────────────────────────── */

.dt-navbar {
    background: var(--dt-navy);
    box-shadow: 0 1px 0 var(--dt-border-dark), 0 4px 24px rgba(0,0,0,.32);
    padding: .6rem 0;
    z-index: 1030;
}

/* Brand / logo */
.dt-brand {
    display: flex;
    align-items: center;
    gap: .45rem;
    text-decoration: none;
}
.dt-brand-icon {
    font-size: 1.4rem;
    line-height: 1;
    color: #fb923c;
    transition: color var(--dt-ease);
}
.dt-brand:hover .dt-brand-icon { color: #fdba74; }
.dt-brand-text {
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: -.015em;
    background: linear-gradient(90deg, #ffffff 40%, #94a3b8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Nav links */
.dt-navbar .nav-link {
    color: rgba(255,255,255,.72) !important;
    font-size: .875rem;
    font-weight: 500;
    padding: .45rem .7rem !important;
    border-radius: var(--dt-radius-sm);
    position: relative;
    transition: color var(--dt-ease), background var(--dt-ease);
    letter-spacing: .005em;
}
.dt-navbar .nav-link:hover {
    color: #fff !important;
    background: rgba(255,255,255,.09);
}

/* Active state — white text + orange underline */
.dt-navbar .nav-link.active {
    color: #fff !important;
    background: var(--dt-orange-muted);
}
.dt-navbar .nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: .7rem;
    right: .7rem;
    height: 2px;
    background: var(--dt-orange);
    border-radius: 1px;
}

/* YouTube link — red icon */
.dt-yt-link .bi-youtube { color: #ff3333; }

/* Dropdown menus */
.dt-dropdown {
    background: #131e31;
    border: 1px solid var(--dt-border-dark);
    border-radius: var(--dt-radius);
    padding: .35rem;
    box-shadow: 0 8px 32px rgba(0,0,0,.45);
    min-width: 200px;
}
.dt-dropdown .dropdown-item {
    color: rgba(255,255,255,.72);
    font-size: .875rem;
    font-weight: 450;
    padding: .48rem .8rem;
    border-radius: var(--dt-radius-sm);
    display: flex;
    align-items: center;
    gap: .5rem;
    transition: background var(--dt-ease), color var(--dt-ease);
}
.dt-dropdown .dropdown-item:hover,
.dt-dropdown .dropdown-item:focus  { background: rgba(255,255,255,.09); color: #fff; }
.dt-dropdown .dropdown-item:active { background: rgba(79,70,229,.25);   color: #fff; }

/* Robot colour dot */
.dt-dot {
    display: inline-block;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    flex-shrink: 0;
}

/* Hamburger */
.dt-toggler {
    border-color: rgba(255,255,255,.22);
    padding: .35rem .55rem;
}
.dt-toggler:focus { box-shadow: 0 0 0 .2rem var(--dt-primary-muted); }

/* Desktop hover dropdown */
@media (min-width: 992px) {
    .nav-hover-drop:hover > .dropdown-menu { display: block; margin-top: 0; }
    .nav-hover-drop > .nav-link::after     { display: none; }
}

/* Mobile: caret toggle */
.nav-drop-toggle {
    background: none;
    border: none;
    padding: .2rem .6rem;
    color: rgba(255,255,255,.6);
    cursor: pointer;
    font-size: .9rem;
    line-height: 1;
}
.nav-drop-toggle:hover,
.nav-drop-toggle:focus { color: #fff; outline: none; }

@media (max-width: 991.98px) {
    .dt-navbar .navbar-collapse {
        background: var(--dt-navy-mid);
        margin-top: .5rem;
        padding: .65rem .75rem;
        border-radius: var(--dt-radius);
        border: 1px solid rgba(255,255,255,.08);
    }
    .nav-hover-drop {
        display: flex !important;
        align-items: center;
        flex-wrap: wrap;
    }
    .nav-hover-drop > .nav-link      { flex: 1; }
    .nav-hover-drop > .dropdown-menu { flex-basis: 100%; }

    /* Mobile active: left accent bar */
    .dt-navbar .nav-link.active::after {
        bottom: auto;
        top: 50%;
        transform: translateY(-50%);
        left: 0;
        right: auto;
        width: 3px;
        height: 60%;
        border-radius: 0 2px 2px 0;
    }
}

/* ── Refined Footer ─────────────────────────────────────────────────────── */

.dt-footer {
    background: var(--dt-navy);
    border-top: 1px solid rgba(255,255,255,.06);
    color: rgba(255,255,255,.62);
}

.dt-footer-brand {
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: -.01em;
    color: #fff;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: .45rem;
}
.dt-footer-brand:hover { color: #e2e8f0; text-decoration: none; }
.dt-footer-brand .bi { color: #fb923c; font-size: 1.3rem; }

.dt-footer-tagline {
    font-size: .875rem;
    color: rgba(255,255,255,.45);
    margin-top: .5rem;
    line-height: 1.6;
    max-width: 280px;
}

.dt-footer-heading {
    font-size: .7rem;
    font-weight: 700;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: rgba(255,255,255,.35);
    margin-bottom: .9rem;
}

.dt-footer-link {
    display: block;
    color: rgba(255,255,255,.55);
    text-decoration: none;
    font-size: .875rem;
    padding: .18rem 0;
    transition: color var(--dt-ease);
}
.dt-footer-link:hover { color: #fff; text-decoration: none; }

.dt-footer-social {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: var(--dt-radius-sm);
    background: rgba(255,255,255,.07);
    color: rgba(255,255,255,.6);
    font-size: 1rem;
    text-decoration: none;
    transition: background var(--dt-ease), color var(--dt-ease);
}
.dt-footer-social:hover {
    background: rgba(255,255,255,.14);
    color: #fff;
    text-decoration: none;
}

.dt-footer-divider {
    border-color: rgba(255,255,255,.07);
    margin: 2rem 0 1.5rem;
}

.dt-footer-bottom {
    font-size: .8rem;
    color: rgba(255,255,255,.32);
}
.dt-footer-bottom a {
    color: rgba(255,255,255,.45);
    text-decoration: none;
    transition: color var(--dt-ease);
}
.dt-footer-bottom a:hover { color: rgba(255,255,255,.75); text-decoration: none; }

/* ── Admin Panel ────────────────────────────────────────────────────────── */

/* Sub-navigation bar */
.dt-admin-nav {
    background: var(--dt-white);
    border-bottom: 1px solid var(--dt-border);
    position: sticky;
    top: 57px;
    z-index: 900;
}
.dt-admin-nav-inner {
    display: flex;
    gap: .1rem;
    overflow-x: auto;
    padding: .35rem 0;
    scrollbar-width: none;
}
.dt-admin-nav-inner::-webkit-scrollbar { display: none; }

.dt-admin-nav-link {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    padding: .38rem .75rem;
    border-radius: var(--dt-radius-sm);
    color: var(--dt-text-muted);
    text-decoration: none;
    font-size: .82rem;
    font-weight: 500;
    white-space: nowrap;
    transition: background var(--dt-ease), color var(--dt-ease);
    border: 1px solid transparent;
}
.dt-admin-nav-link:hover {
    background: var(--dt-surface);
    color: var(--dt-text);
    text-decoration: none;
}
.dt-admin-nav-link.active {
    background: var(--dt-primary-light);
    color: var(--dt-primary);
    border-color: rgba(79,70,229,.15);
    text-decoration: none;
}
.dt-admin-nav-link .bi { font-size: .8rem; opacity: .75; }
.dt-admin-nav-link.active .bi { opacity: 1; }

/* Nav divider */
.dt-admin-nav-sep {
    width: 1px;
    background: var(--dt-border);
    margin: .25rem .25rem;
    align-self: stretch;
    flex-shrink: 0;
}

/* Quick-toggle publish button in articles table */
.dt-pub-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: var(--dt-radius-sm);
    border: 1px solid transparent;
    cursor: pointer;
    transition: background var(--dt-ease), color var(--dt-ease);
    background: none;
    font-size: .85rem;
    padding: 0;
}
.dt-pub-toggle.published {
    color: #16a34a;
    background: #dcfce7;
    border-color: #bbf7d0;
}
.dt-pub-toggle.published:hover {
    background: #f0fdf4;
    color: #15803d;
}
.dt-pub-toggle.draft {
    color: var(--dt-text-muted);
    background: var(--dt-surface-2);
    border-color: var(--dt-surface-3);
}
.dt-pub-toggle.draft:hover {
    background: var(--dt-surface-3);
    color: var(--dt-text);
}

/* Stats card accent bar */
.dt-stat-card {
    border-radius: var(--dt-radius-lg) !important;
    border: 1px solid var(--dt-border) !important;
    transition: box-shadow var(--dt-ease);
    overflow: hidden;
}
.dt-stat-card:hover { box-shadow: var(--dt-shadow-md) !important; }
.dt-stat-card-bar {
    height: 3px;
    width: 100%;
}

/* Admin table tweaks */
.dt-admin-table th {
    font-size: .72rem;
    font-weight: 600;
    letter-spacing: .06em;
    text-transform: uppercase;
    color: var(--dt-text-muted);
    border-bottom: 1px solid var(--dt-border) !important;
    background: var(--dt-surface);
    padding: .75rem 1rem;
}
.dt-admin-table td {
    padding: .75rem 1rem;
    vertical-align: middle;
    border-bottom: 1px solid var(--dt-border);
}
.dt-admin-table tr:last-child td { border-bottom: none; }