/* ==========================================================
   components.css
   Reusable UI components: navigation (desktop + mobile),
   buttons, shared card tokens (§2–§11), and all card
   component unique properties.
   Part of: Mohammed Shehzad Khan Portfolio v2.0
========================================================== */

/* ==========================================================
   HEADER & NAVIGATION
========================================================== */

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(24px);
    background: rgba(248,250,252,.97);
    border-bottom: 1px solid var(--border);
    transition: box-shadow var(--transition);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    min-height: 72px;
}

.logo {
    font-family: "Fraunces", serif;
    font-size: 1.1rem;
    font-weight: 600;
}

/* Logo is wrapped in an <a> for home navigation;
   preserve visual appearance, suppress link underline */
.logo a {
    color: inherit;
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none; /* Fixed bullets issue */
}

.nav-links a {
    color: var(--text-secondary);
    transition: color var(--transition);
}

.nav-links a:hover,
.nav-links a:focus-visible {
    color: var(--text);
}

/* ── Mobile hamburger toggle ─────────────────────────── */

.nav-toggle {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-sm);
    transition: background var(--transition);
}

.nav-toggle:hover {
    background: var(--accent-soft);
}

.hamburger-bar {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: transform var(--transition), opacity var(--transition);
    transform-origin: center;
}

/* Animate bars → × when menu is open */
.nav-toggle[aria-expanded="true"] .hamburger-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .hamburger-bar:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}
.nav-toggle[aria-expanded="true"] .hamburger-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.nav-links a[aria-current="page"] {
    color: var(--accent);
    position: relative;
}
.nav-links a[aria-current="page"]::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent-gradient);
    border-radius: 2px;
}

/* ==========================================================
   BUTTONS
========================================================== */

.button-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 14px 28px;
    border-radius: var(--radius-sm);
    font-family: "Manrope", sans-serif;
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 0.015em;
    transition: var(--transition);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-gradient));
    color: white;
    border: 1px solid var(--accent);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(30,58,95,.28);
}

.btn-secondary {
    color: var(--text-secondary);
    border: 1.5px solid var(--border-strong);
}

.btn-secondary:hover {
    color: var(--accent);
    border-color: var(--accent);
    background: var(--accent-soft);
}

/* Inline SVG icons (replaces emoji — premium, consistent,
   no icon font). Sits inline with button / meta text. */
.ic {
    width: 1.1em;
    height: 1.1em;
    flex-shrink: 0;
    vertical-align: -0.15em;
}

/* ── Recruiter Action Bar ───────────────────────────────
   Sits directly beneath the navigation (non-sticky) so it is
   visible on load but scrolls away — never collides with
   content on small screens. Flexbox + tokens only; no
   absolute positioning or fixed-pixel sizing. */
.recruiter-bar {
    background: var(--accent-soft);
    border-bottom: 1px solid var(--border);
}

.recruiter-bar__inner {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    flex-wrap: wrap;
    gap: var(--space-1) var(--space-2);
    padding: 0.7rem 0;
}

/* Compact variant for the action bar */
.btn-sm {
    padding: 9px 18px;
    font-size: 0.85rem;
}

/* Keyboard focus visibility for the bar's actions */
.recruiter-bar .btn:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* ==========================================================
   SHARED COMPONENT TOKENS (§2–§11)
   Consolidated declarations extracted from individual
   component rules. Rules below contain ONLY what is unique
   to that component.
========================================================== */

/* §2: White card base */
.stat-card,
.edu-card,
.cert-card,
.wc-card,
.contact-link,
.tl-card,
.research-card {
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
}

/* A 3 + A 4: Shared card shadows */
.tl-card,
.research-card {
    box-shadow: var(--shadow-card);
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

/* A 3b: Shared hover state */
.tl-card:hover,
.cert-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card-hover);
    border-color: var(--accent-soft);
}

/* §5: Shared card heading typography */
.edu-deg,
.cert-name,
.pd-card h4 {
    font-family: "Fraunces", serif;
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

/* §6: Shared organisation / issuer text */
.edu-sch,
.cert-issuer,
.tl-org,
.cval {
    font-weight: 600;
    color: var(--accent);
}

/* §7: Shared muted small text */
.tl-date,
.tl-loc,
.edu-yr,
.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* §8: Shared uppercase label style */
.stat-label,
.skill-cluster h3,
.clabel {
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* §9: Shared auto-grid base */
.edu-grid,
.pd-grid,
.stats-grid {
    display: grid;
    gap: 1.5rem;
}

.certs-grid,
.skill-clusters {
    display: grid;
    gap: 2rem;
}

/* §11: Badge-group utility */
.research-meta-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

/* ==========================================================
   COMPONENTS — UNIQUE PROPERTIES ONLY
========================================================== */

/* ── Stats grid ───────────────────────────────────────── */

.stats-grid {
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    margin-bottom: 4rem;
}
.stat-card {
    padding: 1.5rem;
    text-align: center;
    background: white;
    box-shadow: var(--shadow-subtle);
    display: flex;
    flex-direction: column;
    border-top: 3px solid var(--accent);
    border-image: linear-gradient(to right, var(--accent), var(--accent-gradient)) 1;
}
.stat-num {
    order: -1;
    font-family: "Fraunces", serif;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent);
    line-height: 1;
}
.stat-label {
    font-weight: 600;
    margin-top: 0.5rem;
    margin-left: 0;
}

/* ── Skills ───────────────────────────────────────────── */

.skill-clusters {
    grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
}
.skill-cluster h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--accent);
}
.chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}
.chip {
    font-size: 0.85rem;
    font-weight: 500;
    padding: 0.4rem 0.8rem;
    border-radius: 9999px;
    border: 1px solid var(--accent-tint);
    background: var(--accent-tint);
    color: var(--accent);
    transition: var(--transition);
}
.chip:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-soft);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(30,58,95,.15);
}

/* ── Credentials: Education ───────────────────────────── */

.edu-grid {
    grid-template-columns: repeat(auto-fill, minmax(min(280px, 100%), 1fr));
}
.edu-card {
    padding: 1.5rem;
    border-top: 3px solid var(--warm-accent);
}
.edu-yr {
    display: block;
    margin-bottom: 1rem;
}

/* ── Credentials: Certifications ─────────────────────── */

.certs-grid {
    grid-template-columns: repeat(auto-fill, minmax(min(250px, 100%), 1fr));
}
.cert-card {
    padding: 1.5rem;
    transition: transform var(--transition);
    border-top: 3px solid var(--warm-accent);
}
.cert-card:hover {
    transform: translateY(-4px);
}
.cert-thumb {
    width: 100%;
    aspect-ratio: 4 / 3;
    background: var(--bg);
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border);
}
.cert-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.cert-issuer {
    margin-bottom: 0.75rem;
}

/* ── Credentials: Professional Development ────────────── */

.pd-grid {
    grid-template-columns: repeat(auto-fill, minmax(min(220px, 100%), 1fr));
}
.pd-card {
    border: 1.5px dashed var(--border-strong);
    border-radius: var(--radius-sm);
    padding: 1.5rem;
}
.pd-card p {
    font-size: 0.9rem;
}

/* ── WeChat card ──────────────────────────────────────── */

.wc-card {
    display: flex;
    align-items: center;
    gap: 2rem;
    padding: 1.5rem;
}
.wc-qr {
    max-width: 220px;
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 10px 15px -3px rgba(15,23,42,0.1);
    flex-shrink: 0;
}
.wc-qr img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 12px;
}
.wc-info {
    flex: 1;
}
.direct-contact-numbers {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}
.contact-link--qr {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}
.contact-link-text {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    flex: 1;
}
.direct-contact-qr-thumb {
    width: 64px;
    height: 64px;
    border-radius: 8px;
    box-shadow: 0 4px 8px -2px rgba(15,23,42,0.15);
    flex-shrink: 0;
}
.wc-name {
    font-family: "Fraunces", serif;
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}
.wc-hint {
    font-size: 0.95rem;
    line-height: 1.5;
    color: var(--text-secondary);
}

/* ── Image fallback ──────────────────────────────────── */
/* Shown by initImageFallbacks() when an <img> fails to load
   (e.g. a certificate / portrait asset not yet supplied).
   Keeps the layout intact — no broken-image icon. */
.img-fallback {
    width: 100%;
    height: 100%;
    min-height: 120px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem;
    background: var(--bg);
    color: var(--text-muted);
    text-align: center;
    border-radius: var(--radius-sm);
}

.img-fallback__icon {
    font-size: 1.75rem;
    line-height: 1;
}

.img-fallback__label {
    font-family: "Manrope", sans-serif;
    font-size: 0.8rem;
    max-width: 28ch;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.certs-grid, .edu-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(320px, 100%), 1fr));
    gap: 1.75rem;
    margin-bottom: 2.5rem;
}

.cert-card, .edu-card {
    background: #FFFFFF;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    position: relative;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.cert-card[data-gallery], .edu-card[data-gallery] {
    cursor: pointer;
}

.cert-card[data-gallery]:hover, .edu-card[data-gallery]:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 32px -8px rgba(15, 23, 42, 0.12);
    border-color: var(--accent);
}

.cert-thumb {
    width: 100%;
    aspect-ratio: 4 / 3;
    background: #F8FAFC;
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 1.25rem;
    border: 1px solid var(--border);
    position: relative;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.4);
}

.cert-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.cert-card[data-gallery]:hover .cert-thumb img,
.edu-card[data-gallery]:hover .cert-thumb img {
    transform: scale(1.03);
}

.cert-thumb-overlay {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background: rgba(15, 23, 42, 0.75);
    color: #FFFFFF;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.72rem;
    font-weight: 600;
    backdrop-filter: blur(4px);
    opacity: 0;
    transition: opacity 0.2s ease;
    display: flex;
    align-items: center;
    gap: 4px;
}

.collection-badge {
    position: absolute;
    top: 8px;
    left: 8px;
    background: #002B49;
    color: #FFFFFF;
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.modal-tabs {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.modal-tab-btn {
    padding: 4px 12px;
    border-radius: 6px;
    border: 1px solid #CBD5E1;
    background: #FFFFFF;
    color: #475569;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.modal-tab-btn:hover {
    background: #F1F5F9;
    color: #0F172A;
}

.modal-tab-btn.is-active {
    background: #1E3A5F;
    color: #FFFFFF;
    border-color: #1E3A5F;
}

.cert-card[data-gallery]:hover .cert-thumb-overlay,
.edu-card[data-gallery]:hover .cert-thumb-overlay {
    opacity: 1;
}

.cert-title, .edu-deg {
    font-family: "Fraunces", serif;
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.35;
    margin-bottom: 0.35rem;
}

.cert-issuer, .edu-sch {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 0.25rem;
}

.cert-period, .edu-yr {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    display: inline-block;
}

.cert-desc {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 1rem;
    flex-grow: 1;
}

/* ── Credentials Lightbox Modal & Zoom Controls ───────── */

.credential-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 9999;
    display: none;
    align-items: center;
    justify-content: center;
    background: rgba(15, 23, 42, 0.88);
    backdrop-filter: blur(8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
}

.credential-modal.is-active {
    display: flex;
    opacity: 1;
    pointer-events: auto;
}

.modal-box {
    background: #FFFFFF;
    max-width: 960px;
    width: 94%;
    max-height: 92vh;
    border-radius: 16px;
    overflow-y: auto;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.4);
    display: flex;
    flex-direction: column;
    position: relative;
    animation: modalSlideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalSlideUp {
    from { transform: translateY(16px) scale(0.98); opacity: 0; }
    to { transform: translateY(0) scale(1); opacity: 1; }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 1.25rem 1.75rem;
    border-bottom: 1px solid #E2E8F0;
    background: #F8FAFC;
}

.modal-title-group h3 {
    font-family: "Fraunces", serif;
    font-size: 1.25rem;
    font-weight: 700;
    color: #0F172A;
    margin-bottom: 2px;
}

.modal-title-group p {
    font-size: 0.85rem;
    color: #64748B;
}

.modal-close {
    background: #E2E8F0;
    border: none;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    font-size: 1.4rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #475569;
    transition: background 0.2s, color 0.2s;
}

.modal-close:hover {
    background: #0F172A;
    color: #FFFFFF;
}

.modal-body {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    align-items: center;
}

.modal-viewport {
    position: relative;
    width: 100%;
    max-height: 520px;
    overflow: auto;
    display: flex;
    justify-content: center;
    align-items: center;
    background: #F1F5F9;
    border-radius: 8px;
    border: 1px solid #E2E8F0;
}

.modal-img {
    max-width: 100%;
    max-height: 500px;
    object-fit: contain;
    transition: transform 0.25s ease, cursor 0.25s ease;
    cursor: zoom-in;
}

.modal-img.is-zoomed {
    max-width: none;
    max-height: none;
    transform: scale(1.4);
    cursor: zoom-out;
}

.modal-zoom-controls {
    position: absolute;
    bottom: 12px;
    right: 12px;
    display: flex;
    gap: 4px;
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(4px);
    padding: 4px;
    border-radius: 6px;
    z-index: 10;
}

.modal-zoom-btn {
    background: transparent;
    border: none;
    color: #FFFFFF;
    padding: 4px 8px;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    border-radius: 4px;
    transition: background 0.2s;
}

.modal-zoom-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.cert-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    margin-bottom: 0.85rem;
}

.cert-tag {
    font-size: 0.72rem;
    font-weight: 600;
    padding: 2px 8px;
    background: #F1F5F9;
    color: #334155;
    border-radius: 4px;
    border: 1px solid #E2E8F0;
}

.modal-info-panel {
    width: 100%;
    background: #F8FAFC;
    border: 1px solid #E2E8F0;
    border-radius: 12px;
    padding: 1.25rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.museum-exhibit-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(220px, 100%), 1fr));
    gap: 1.25rem;
    padding-top: 0.75rem;
    border-top: 1px solid #E2E8F0;
}

.exhibit-block {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.exhibit-label {
    font-family: "Manrope", sans-serif;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: #64748B;
}

.exhibit-value {
    font-size: 0.88rem;
    font-weight: 600;
    color: #0F172A;
}

.modal-supporting-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    font-size: 0.8rem;
    color: #334155;
}

.modal-supporting-list li.avail-tag {
    font-style: italic;
    color: #059669;
    font-weight: 600;
    margin-top: 0.25rem;
}

.modal-privacy-box {
    background: #F1F5F9;
    border-left: 3px solid #64748B;
    padding: 0.75rem 1rem;
    border-radius: 0 6px 6px 0;
    font-size: 0.78rem;
    color: #475569;
    line-height: 1.45;
}

/* ── Evidence Standards Modal ────────────────────────────── */

.evidence-standards-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 10000;
    display: none;
    align-items: center;
    justify-content: center;
    background: rgba(15, 23, 42, 0.88);
    backdrop-filter: blur(8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease, display 0.25s ease;
}

.evidence-standards-modal.is-active {
    display: flex;
    opacity: 1;
    pointer-events: auto;
}

.standards-box {
    background: #FFFFFF;
    max-width: 640px;
    width: 90%;
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.4);
    position: relative;
    animation: modalSlideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.standards-box h3 {
    font-family: "Fraunces", serif;
    font-size: 1.4rem;
    font-weight: 700;
    color: #0F172A;
    margin-bottom: 1rem;
    border-bottom: 2px solid #C5A059;
    padding-bottom: 0.5rem;
}

.standards-box p {
    font-size: 0.92rem;
    line-height: 1.6;
    color: #334155;
    margin-bottom: 1rem;
}

.standards-box ul {
    margin: 1rem 0;
    padding-left: 1.25rem;
    font-size: 0.88rem;
    color: #475569;
    line-height: 1.6;
}

.standards-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: #E2E8F0;
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #475569;
}

.modal-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background: #FFFFFF;
    border-top: 1px solid #E2E8F0;
}

.modal-nav-btns {
    display: flex;
    gap: 0.5rem;
}

.modal-nav-btn {
    padding: 0.5rem 1rem;
    border-radius: 6px;
    background: #F1F5F9;
    color: #1E293B;
    font-weight: 600;
    font-size: 0.85rem;
    border: 1px solid #CBD5E1;
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
}

.modal-nav-btn:hover {
    background: #1E3A5F;
    color: #FFFFFF;
    border-color: #1E3A5F;
}

.modal-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background: #FFFFFF;
    border-top: 1px solid #E2E8F0;
}

.modal-nav-btns {
    display: flex;
    gap: 0.5rem;
}

.modal-nav-btn {
    padding: 0.5rem 1rem;
    border-radius: 6px;
    background: #F1F5F9;
    color: #1E293B;
    font-weight: 600;
    font-size: 0.85rem;
    border: 1px solid #CBD5E1;
    cursor: pointer;
    transition: background 0.2s;
}

.modal-nav-btn:hover {
    background: #1E3A5F;
    color: #FFFFFF;
    border-color: #1E3A5F;
}