/* ============================================
   Meet Patel — Portfolio Site Styles
   Light theme · teal accent · Outfit / DM Sans
   ============================================ */

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    /* Surfaces */
    --bg: #ffffff;
    --bg-raised: #f4f7fa;      /* alt sections, currently strip, mobile menu */
    --bg-card: #ffffff;

    /* Text */
    --text: #0f172a;           /* slate-900, soft near-black */
    --text-muted: #566173;     /* slate, AA on white */

    /* Accent — dual teal for contrast safety */
    --accent: #0d9488;         /* brand teal: fills, borders, decorative */
    --accent-ink: #0f766e;     /* darker teal: small text on light */
    --accent-2: #0891b2;       /* cyan partner for gradients */
    --accent-dim: rgba(13, 148, 136, 0.09);
    --accent-glow: rgba(13, 148, 136, 0.18);

    --border: #e4e9f0;

    /* Elevation */
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04), 0 2px 6px rgba(15, 23, 42, 0.05);
    --shadow-md: 0 6px 16px rgba(15, 23, 42, 0.07), 0 14px 34px rgba(15, 23, 42, 0.08);
    --shadow-accent: 0 10px 30px rgba(13, 148, 136, 0.18);

    --font-heading: 'Outfit', sans-serif;
    --font-body: 'DM Sans', sans-serif;
    --max-w: 1120px;
    --px: 1.5rem;
}

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-body);
    background: var(--bg);
    color: var(--text);
    line-height: 1.65;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

a { color: var(--accent-ink); text-decoration: none; transition: opacity 0.2s, color 0.2s; }
a:hover { opacity: 0.85; }

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

/* ——— NAV ——— */
nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    background: rgba(255, 255, 255, 0.78);
    backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 1px 12px rgba(15, 23, 42, 0.03);
}
nav .container {
    display: flex; align-items: center; justify-content: space-between;
    height: 58px;
}
nav .logo {
    font-family: var(--font-heading); font-weight: 700; font-size: 1.15rem;
    color: var(--text); text-decoration: none; letter-spacing: -0.01em;
}
nav .logo span { color: var(--accent); }
nav .nav-links { display: flex; align-items: center; gap: 1.5rem; list-style: none; }
nav .nav-links a {
    color: var(--text-muted); font-size: 0.875rem; font-weight: 500;
    transition: color 0.2s;
}
nav .nav-links a:hover { color: var(--accent-ink); opacity: 1; }
.mobile-toggle {
    display: none; background: none; border: none;
    color: var(--text); cursor: pointer; font-size: 1.5rem;
}

/* ——— HERO ——— */
.hero {
    padding: 8rem 0 3.5rem;
    min-height: 56vh;
    display: flex; align-items: center;
    position: relative; overflow: hidden;
    background:
        radial-gradient(1100px 480px at 12% -12%, rgba(13, 148, 136, 0.12), transparent 60%),
        radial-gradient(900px 460px at 92% 4%, rgba(8, 145, 178, 0.10), transparent 55%);
}
.hero-inner { width: 100%; position: relative; z-index: 1; }
.hero-label {
    display: inline-flex; align-items: center; gap: 0.45rem;
    font-size: 0.78rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase;
    color: var(--accent-ink);
    background: var(--accent-dim);
    border: 1px solid rgba(13, 148, 136, 0.18);
    padding: 0.35rem 0.85rem; border-radius: 100px;
    margin-bottom: 1.25rem;
    opacity: 0; animation: fadeUp 0.6s 0.1s forwards;
}
.hero-label::before {
    content: ''; width: 7px; height: 7px; border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.18);
}
.hero h1 {
    font-family: var(--font-heading); font-weight: 800;
    font-size: clamp(2.6rem, 5.5vw, 3.9rem);
    line-height: 1.1; letter-spacing: -0.02em;
    margin-bottom: 1rem;
    background: linear-gradient(118deg, #0f172a 0%, #134e4a 42%, var(--accent) 100%);
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent; color: transparent;
    opacity: 0; animation: fadeUp 0.6s 0.25s forwards;
}
.hero .tagline {
    font-size: 1.2rem; color: var(--text-muted);
    max-width: 580px; margin-bottom: 2rem;
    opacity: 0; animation: fadeUp 0.6s 0.4s forwards;
}
.hero-links {
    display: flex; gap: 0.75rem; flex-wrap: wrap;
    opacity: 0; animation: fadeUp 0.6s 0.55s forwards;
}
.hero-links a {
    display: inline-flex; align-items: center; gap: 0.4rem;
    padding: 0.6rem 1.15rem; border-radius: 10px;
    font-size: 0.875rem; font-weight: 500;
    border: 1px solid var(--border); color: var(--text);
    background: var(--bg-card);
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s, border-color 0.2s, color 0.2s, box-shadow 0.2s;
}
.hero-links a:hover {
    border-color: var(--accent); color: var(--accent-ink);
    transform: translateY(-2px); opacity: 1;
    box-shadow: var(--shadow-md);
}
.hero-links a.primary {
    background: linear-gradient(120deg, var(--accent) 0%, var(--accent-ink) 100%);
    color: #ffffff; border-color: transparent; font-weight: 600;
    box-shadow: var(--shadow-accent);
}
.hero-links a.primary:hover { color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-accent), var(--shadow-md); }

/* ——— SECTIONS ——— */
section { padding: 4.75rem 0; }
.section-label {
    display: inline-block;
    font-family: var(--font-heading); font-size: 0.75rem; font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.1em;
    color: var(--accent-ink); margin-bottom: 0.6rem;
}
section h2 {
    font-family: var(--font-heading); font-weight: 700;
    font-size: 1.9rem; letter-spacing: -0.01em;
    color: var(--text); margin-bottom: 1rem;
}
section p.section-desc {
    color: var(--text-muted); max-width: 620px; margin-bottom: 2rem;
}

/* ——— CURRENTLY ——— */
.currently {
    background: var(--bg-raised);
    border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
    padding: 3rem 0;
}
.currently-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.25rem;
}
.currently-item {
    display: flex; align-items: flex-start; gap: 0.75rem;
    font-size: 0.95rem; color: var(--text-muted);
}
.currently-item .icon {
    flex-shrink: 0; width: 30px; height: 30px;
    background: var(--accent-dim); border: 1px solid rgba(13, 148, 136, 0.16);
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    font-size: 0.9rem;
}

/* ——— CARDS ——— */
.card-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: 1.25rem;
}
.card {
    background: var(--bg-card); border: 1px solid var(--border); border-radius: 14px;
    padding: 1.6rem; transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
    text-decoration: none; display: block;
    box-shadow: var(--shadow-sm);
    position: relative; overflow: hidden;
}
.card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    opacity: 0; transition: opacity 0.25s;
}
.card:hover {
    border-color: rgba(13, 148, 136, 0.35);
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
    opacity: 1;
}
.card:hover::before { opacity: 1; }
.card h3 {
    font-family: var(--font-heading); font-weight: 600;
    font-size: 1.15rem; color: var(--text); margin-bottom: 0.5rem;
    letter-spacing: -0.01em;
}
.card p {
    font-size: 0.9rem; color: var(--text-muted);
    margin-bottom: 1rem; line-height: 1.55;
}
.card .tags { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.card .tag {
    font-size: 0.72rem; font-weight: 600;
    padding: 0.22rem 0.62rem; border-radius: 100px;
    background: var(--accent-dim); color: var(--accent-ink);
}

/* ——— WRITING LIST ——— */
.writing-list { list-style: none; }
.writing-list li { border-bottom: 1px solid var(--border); padding: 1rem 0; }
.writing-list li:last-child { border-bottom: none; }
.writing-list a {
    display: flex; justify-content: space-between; align-items: center;
    color: var(--text); font-weight: 500; transition: color 0.2s;
}
.writing-list a:hover { color: var(--accent-ink); opacity: 1; }
.writing-list .arrow { color: var(--text-muted); transition: transform 0.2s, color 0.2s; }
.writing-list a:hover .arrow { transform: translateX(4px); color: var(--accent-ink); }
.writing-meta { font-size: 0.8rem; color: var(--text-muted); margin-top: 0.25rem; }
.hashnode-cta {
    display: inline-flex; align-items: center; gap: 0.4rem;
    margin-top: 1.5rem; font-weight: 600; font-size: 0.95rem;
    color: var(--accent-ink);
}

/* ——— HASHNODE POSTS PREVIEW (horizontal scroll) ——— */
.hashnode-scroll {
    display: flex; gap: 1rem;
    overflow-x: auto;
    scroll-snap-type: x proximity;
    padding-bottom: 1rem;
    -webkit-overflow-scrolling: touch;
    margin: 0 calc(-1 * var(--px));
    padding-left: var(--px);
    padding-right: var(--px);
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
}
.hashnode-scroll::-webkit-scrollbar { height: 8px; }
.hashnode-scroll::-webkit-scrollbar-track { background: transparent; }
.hashnode-scroll::-webkit-scrollbar-thumb { background: var(--border); border-radius: 100px; }
.hashnode-scroll::-webkit-scrollbar-thumb:hover { background: var(--accent); }

.hashnode-card {
    flex: 0 0 300px;
    scroll-snap-align: start;
    display: flex; flex-direction: column;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 14px;
    text-decoration: none; color: var(--text);
    transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}
.hashnode-card:hover {
    border-color: rgba(13, 148, 136, 0.35);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    opacity: 1;
}
.hashnode-cover {
    height: 150px;
    background-color: var(--bg-raised);
    background-size: cover; background-position: center;
    background-image: linear-gradient(135deg, rgba(13, 148, 136, 0.14) 0%, var(--bg-raised) 100%);
    flex-shrink: 0;
    border-bottom: 1px solid var(--border);
}
.hashnode-body {
    padding: 1rem 1.1rem 1.15rem;
    display: flex; flex-direction: column; flex: 1;
}
.hashnode-meta {
    font-family: var(--font-heading);
    font-size: 0.7rem; font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.06em;
    color: var(--accent-ink);
    margin-bottom: 0.5rem;
}
.hashnode-card h3 {
    font-family: var(--font-heading);
    font-weight: 600; font-size: 1rem;
    color: var(--text); line-height: 1.35;
    margin-bottom: 0.5rem;
}
.hashnode-card p {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.55;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
@media (max-width: 640px) {
    .hashnode-card { flex: 0 0 260px; }
    .hashnode-cover { height: 130px; }
}

/* ——— SKILLS ——— */
.skills-group { margin-bottom: 1.5rem; }
.skills-group h3 {
    font-family: var(--font-heading); font-weight: 700; font-size: 0.9rem;
    color: var(--text); margin-bottom: 0.6rem;
    text-transform: uppercase; letter-spacing: 0.06em;
}
.pills { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.pill {
    font-size: 0.8rem; font-weight: 500;
    padding: 0.38rem 0.8rem; border-radius: 100px;
    background: var(--bg-card); border: 1px solid var(--border);
    color: var(--text-muted); transition: all 0.2s;
    box-shadow: var(--shadow-sm);
}
.pill:hover {
    border-color: var(--accent); color: var(--accent-ink);
    transform: translateY(-2px) scale(1.02);
    box-shadow: var(--shadow-md);
}

/* ——— SECTION: ALT BG ——— */
.section-alt {
    background: var(--bg-raised);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

/* ——— FOOTER ——— */
footer { border-top: 1px solid var(--border); padding: 3rem 0; background: var(--bg-raised); }
.footer-grid {
    display: flex; justify-content: space-between; align-items: flex-start;
    flex-wrap: wrap; gap: 2rem;
}
.footer-left p { color: var(--text-muted); font-size: 0.875rem; }
.footer-links { display: flex; gap: 1.5rem; flex-wrap: wrap; }
.footer-links a { color: var(--text-muted); font-size: 0.875rem; }
.footer-links a:hover { color: var(--accent-ink); }

/* ——— ANIMATIONS ——— */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}
.reveal {
    opacity: 0; transform: translateY(20px);
    transition: opacity 0.5s, transform 0.5s;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ——— CASE STUDY PAGES ——— */
.case-hero {
    padding: 8rem 0 3rem;
    background: radial-gradient(900px 400px at 15% -20%, rgba(13, 148, 136, 0.10), transparent 60%);
}
.case-hero .breadcrumb {
    font-size: 0.8rem; color: var(--text-muted); margin-bottom: 1.5rem;
}
.case-hero .breadcrumb a { color: var(--text-muted); }
.case-hero .breadcrumb a:hover { color: var(--accent-ink); }
.case-hero .breadcrumb .sep { margin: 0 0.4rem; }
.case-hero h1 {
    font-family: var(--font-heading); font-weight: 800;
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    line-height: 1.2; color: var(--text); margin-bottom: 0.75rem;
    letter-spacing: -0.01em;
}
.case-hero .case-subtitle {
    font-size: 1.1rem; color: var(--text-muted); max-width: 600px;
    margin-bottom: 1.5rem;
}
.case-meta {
    display: flex; gap: 1.5rem; flex-wrap: wrap;
    font-size: 0.8rem; color: var(--text-muted);
}
.case-meta .meta-item { display: flex; align-items: center; gap: 0.35rem; }
.case-meta .meta-label { color: var(--accent-ink); font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; }

.case-body { padding: 3rem 0 5rem; }
.case-body h2 {
    font-family: var(--font-heading); font-weight: 700;
    font-size: 1.4rem; color: var(--text);
    margin-top: 2.5rem; margin-bottom: 0.75rem;
    padding-top: 1.5rem; border-top: 1px solid var(--border);
}
.case-body h2:first-child { margin-top: 0; padding-top: 0; border-top: none; }
.case-body p { margin-bottom: 1rem; color: var(--text); max-width: 680px; }
.case-body ul {
    list-style: none; padding: 0; margin-bottom: 1.5rem;
}
.case-body ul li {
    position: relative; padding-left: 1.25rem; margin-bottom: 0.6rem;
    color: var(--text-muted); font-size: 0.95rem;
}
.case-body ul li::before {
    content: ''; position: absolute; left: 0; top: 0.6em;
    width: 6px; height: 6px; border-radius: 50%;
    background: var(--accent);
}
.case-body .impact-item {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: 12px; padding: 1.25rem; margin-bottom: 0.75rem;
    box-shadow: var(--shadow-sm);
}
.case-body .impact-item p { margin-bottom: 0; color: var(--text-muted); font-size: 0.95rem; }
.case-body .doc-links {
    display: flex; gap: 0.75rem; flex-wrap: wrap; margin: 1.5rem 0;
}
.case-body .doc-link {
    display: inline-flex; align-items: center; gap: 0.4rem;
    padding: 0.5rem 1rem; border-radius: 8px;
    font-size: 0.85rem; font-weight: 500;
    border: 1px solid var(--border); color: var(--text-muted);
    background: var(--bg-card);
    transition: all 0.2s;
}
.case-body .doc-link:hover { border-color: var(--accent); color: var(--accent-ink); opacity: 1; }

.case-nav {
    border-top: 1px solid var(--border); padding: 2rem 0;
    display: flex; justify-content: space-between; align-items: center;
    flex-wrap: wrap; gap: 1rem;
}
.case-nav a {
    font-weight: 500; font-size: 0.9rem; color: var(--text-muted);
    display: flex; align-items: center; gap: 0.3rem;
}
.case-nav a:hover { color: var(--accent-ink); opacity: 1; }

/* ——— RESPONSIVE ——— */
@media (max-width: 640px) {
    .hero { padding: 7rem 0 3rem; min-height: auto; }
    .case-hero { padding: 6rem 0 2rem; }
    section { padding: 3rem 0; }
    .card-grid { grid-template-columns: 1fr; }
    nav .nav-links { display: none; }
    .mobile-toggle { display: block; }
    nav .nav-links.open {
        display: flex; flex-direction: column; align-items: flex-start;
        position: absolute; top: 58px; left: 0; right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
        padding: 1rem var(--px); gap: 1rem;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow-md);
    }
    .footer-grid { flex-direction: column; }
    .currently-grid { grid-template-columns: 1fr; }
    .case-meta { flex-direction: column; gap: 0.5rem; }
}