/* ========================================
   ANUSHREE CHANDRA — AI PRODUCT STRATEGIST
   Light editorial minimal
   ======================================== */

:root {
    --bg: #fcfcfa;
    --surface: #ffffff;
    --surface-alt: #f6f5f1;
    --text: #15161a;
    --muted: #6c7079;
    --faint: #a3a7af;
    --line: #e7e6e1;
    --accent: #4f46e5;
    --nav-bg: rgba(252, 252, 250, 0.7);
    --shadow-card: 0 26px 50px -18px rgba(31, 30, 80, 0.28);

    --serif: 'Fraunces', Georgia, 'Times New Roman', serif;
    --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    --maxw: 1040px;
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
    --bg: #0c0d11;
    --surface: #16181f;
    --surface-alt: #101116;
    --text: #f3f2ee;
    --muted: #9aa0ab;
    --faint: #696e78;
    --line: #25272f;
    --accent: #8e88f8;
    --nav-bg: rgba(12, 13, 17, 0.7);
    --shadow-card: 0 26px 50px -18px rgba(0, 0, 0, 0.6);
}

html { color-scheme: light dark; }
[data-theme="dark"] { color-scheme: dark; }

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

html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }

body {
    font-family: var(--sans);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    font-size: 16px;
    overflow-x: hidden;
    transition: background 0.35s ease, color 0.35s ease;
}

a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 32px; }

::selection { background: var(--accent); color: #fff; }

/* ========================================
   NAV
   ======================================== */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--nav-bg);
    backdrop-filter: saturate(180%) blur(14px);
    -webkit-backdrop-filter: saturate(180%) blur(14px);
    border-bottom: 1px solid transparent;
    transition: border-color var(--transition), background 0.35s ease;
}
.navbar.scrolled { border-bottom-color: var(--line); }

.nav-container {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 22px 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo { font-size: 15px; font-weight: 500; letter-spacing: -0.01em; }

.nav-menu { display: flex; align-items: center; gap: 32px; }
.nav-link {
    font-size: 14px; font-weight: 400; color: var(--muted);
    position: relative; transition: color var(--transition);
}
.nav-link:hover, .nav-link.active { color: var(--text); }
.nav-cta { color: var(--text); font-weight: 500; }

.nav-right { display: flex; align-items: center; gap: 10px; }

.theme-toggle {
    display: inline-flex; align-items: center; justify-content: center;
    width: 38px; height: 38px; border-radius: 50%;
    background: transparent; border: 1px solid var(--line);
    color: var(--text); cursor: pointer;
    transition: var(--transition);
}
.theme-toggle:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-1px); }
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .icon-moon { display: none; }
.theme-toggle .icon-sun { display: block; }
[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: block; }

.nav-toggle {
    display: none; flex-direction: column; gap: 5px;
    background: none; border: none; cursor: pointer; padding: 6px;
}
.nav-toggle span { width: 22px; height: 1.5px; background: var(--text); transition: var(--transition); }

/* ========================================
   HERO
   ======================================== */
.hero { padding: 80px 0 70px; }
.hero-grid {
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    gap: 48px;
    align-items: center;
}

.hero-meta {
    display: inline-flex; align-items: center; gap: 9px;
    font-size: 13px; font-weight: 500; color: var(--muted);
    letter-spacing: 0.01em; margin-bottom: 26px;
}
.hero-meta .dot {
    width: 7px; height: 7px; border-radius: 50%; background: #2f9e6b;
    box-shadow: 0 0 0 3px rgba(47, 158, 107, 0.16);
}

.hero-title {
    font-family: var(--serif);
    font-weight: 400;
    font-size: clamp(52px, 9vw, 128px);
    line-height: 0.94;
    letter-spacing: -0.03em;
    color: var(--text);
    max-width: 13ch;
    margin-bottom: 30px;
}
.hero-title em { font-style: italic; color: var(--accent); }

.hero-sub {
    font-size: clamp(17px, 2.2vw, 22px);
    line-height: 1.5;
    color: var(--muted);
    max-width: 44ch;
    margin-bottom: 38px;
}

.hero-actions { display: flex; align-items: center; gap: 28px; }

/* Hero portrait */
.hero-portrait {
    position: relative;
    aspect-ratio: 4 / 5;
    border-radius: 26px;
    overflow: hidden;
    isolation: isolate;
}
.hero-portrait img {
    width: 100%; height: 100%;
    object-fit: cover; object-position: center 18%;
    display: block;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
.hero-portrait:hover img { transform: scale(1.04); }
.portrait-glow {
    position: absolute; inset: auto -30% -40% -30%; height: 70%;
    background: radial-gradient(60% 70% at 50% 100%, rgba(79, 70, 229, 0.55), transparent 70%);
    z-index: -1; filter: blur(20px);
}
.hero-portrait::after {
    content: ''; position: absolute; inset: 0;
    border-radius: 26px; pointer-events: none;
    box-shadow: inset 0 0 0 1px rgba(21, 22, 26, 0.06);
}
.portrait-tag {
    position: absolute; left: 14px; bottom: 14px; z-index: 2;
    font-size: 12px; font-weight: 500; color: #15161a;
    padding: 7px 13px; border-radius: 100px;
    background: rgba(255, 255, 255, 0.78);
    backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(21, 22, 26, 0.12);
}

.link-primary {
    font-size: 15px; font-weight: 500; color: var(--text);
    padding-bottom: 4px;
    border-bottom: 1.5px solid var(--text);
    transition: var(--transition);
}
.link-primary:hover { color: var(--accent); border-color: var(--accent); }
.link-ghost {
    font-size: 15px; font-weight: 400; color: var(--muted);
    transition: color var(--transition);
}
.link-ghost:hover { color: var(--text); }

/* ========================================
   STATS
   ======================================== */
.stats { padding: 0 0 30px; }
.stats-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    padding: 44px 0;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}
.stat { display: flex; flex-direction: column; gap: 8px; }
.stat-num {
    font-family: var(--serif); font-weight: 400;
    font-size: clamp(34px, 5vw, 52px); line-height: 1;
    letter-spacing: -0.02em; color: var(--text);
}
.stat-cap { font-size: 13px; color: var(--muted); }

/* ========================================
   CONTENT BLOCKS
   ======================================== */
.block { padding: 110px 0; }
.block.alt { background: var(--surface-alt); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); transition: background 0.35s ease; }

.eyebrow {
    display: inline-block;
    font-size: 12px; font-weight: 500;
    text-transform: uppercase; letter-spacing: 0.12em;
    color: var(--faint); margin-bottom: 20px;
}

.block-title {
    font-family: var(--serif); font-weight: 400;
    font-size: clamp(30px, 4.6vw, 52px);
    line-height: 1.04; letter-spacing: -0.02em;
    color: var(--text); max-width: 18ch;
    margin-bottom: 56px;
}
.block-title em { font-style: italic; color: var(--accent); }

/* Cards grid */
.cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}
.tower-cards { grid-template-columns: repeat(2, 1fr); gap: 18px; }

/* Tower card */
.card {
    position: relative;
    display: flex; flex-direction: column;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 22px;
    padding: 28px 28px 26px;
    overflow: hidden;
    transition: transform 0.4s cubic-bezier(0.4,0,0.2,1), box-shadow 0.4s ease, border-color 0.4s ease, background 0.35s ease;
}
.card::before {
    content: ''; position: absolute; inset: 0;
    background: radial-gradient(120% 90% at 0% 0%, color-mix(in srgb, var(--accent) 8%, transparent), transparent 55%);
    opacity: 0; transition: opacity 0.4s ease;
}
.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-card);
    border-color: color-mix(in srgb, var(--accent) 38%, transparent);
}
.card:hover::before { opacity: 1; }

.card-head {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 20px;
}
.card-icon {
    display: inline-flex; align-items: center; justify-content: center;
    width: 46px; height: 46px; border-radius: 13px;
    background: linear-gradient(145deg, #6366f1, #4338ca);
    color: #fff;
    box-shadow: 0 8px 18px -6px rgba(79, 70, 229, 0.55);
}
.card-icon svg { width: 22px; height: 22px; }
.card-idx { font-size: 12px; color: var(--faint); font-variant-numeric: tabular-nums; }
.card-name {
    font-size: 20px; font-weight: 600; letter-spacing: -0.015em;
    line-height: 1.25; margin-bottom: 11px;
}
.card-desc { font-size: 14.5px; color: var(--muted); line-height: 1.6; flex-grow: 1; }

.card-foot {
    margin-top: 22px; padding-top: 18px;
    border-top: 1px solid var(--line);
    display: flex; flex-direction: column; align-items: flex-start; gap: 10px;
}
.card-impact {
    font-size: 11px; font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase;
    color: var(--accent); background: color-mix(in srgb, var(--accent) 11%, transparent);
    padding: 5px 12px; border-radius: 100px;
}
.card-role { font-size: 13px; font-weight: 500; color: var(--text); }

/* Partners */
.partners { margin-top: 80px; }
.partners .eyebrow { display: block; }
.partner-cards { grid-template-columns: repeat(3, 1fr); margin-bottom: 20px; }

.pcard {
    position: relative;
    display: flex; flex-direction: column;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 22px;
    padding: 26px 24px;
    transition: transform 0.4s cubic-bezier(0.4,0,0.2,1), box-shadow 0.4s ease, border-color 0.4s ease, background 0.35s ease;
}
.pcard:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-card);
    border-color: color-mix(in srgb, var(--accent) 38%, transparent);
}
.pcard-badge {
    align-self: flex-start;
    font-size: 11px; font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase;
    color: var(--accent); background: color-mix(in srgb, var(--accent) 11%, transparent);
    padding: 5px 11px; border-radius: 100px; margin-bottom: 18px;
}
.pcard-name { font-size: 21px; font-weight: 600; letter-spacing: -0.015em; margin-bottom: 8px; }
.pcard-desc { font-size: 14px; color: var(--muted); line-height: 1.5; margin-bottom: 20px; }
.pcard-link {
    margin-top: auto;
    font-size: 14px; font-weight: 500; color: var(--text);
    display: inline-flex; align-items: center; gap: 6px;
}
.pcard-ext { transition: transform 0.3s ease; }
.pcard:hover .pcard-ext { transform: translate(2px, -2px); }
.pcard:hover .pcard-link { color: var(--accent); }
.partner-note { font-size: 14px; color: var(--muted); }

/* About */
.prose {
    font-size: clamp(18px, 2.4vw, 23px);
    line-height: 1.55; color: var(--text);
    max-width: 30ch; max-width: 60ch;
    margin-bottom: 44px;
    font-weight: 400;
}
.tags { display: flex; flex-wrap: wrap; gap: 10px 10px; }
.tags li {
    font-size: 14px; color: var(--muted);
    padding: 8px 16px; border: 1px solid var(--line); border-radius: 100px;
    background: var(--surface); transition: var(--transition);
}
.tags li:hover { color: var(--text); border-color: var(--text); }

/* Experience timeline */
.timeline { border-top: 1px solid var(--line); }
.tl-row {
    display: grid;
    grid-template-columns: 160px 1fr 1.4fr;
    gap: 24px;
    align-items: baseline;
    padding: 26px 0;
    border-bottom: 1px solid var(--line);
}
.tl-year { font-size: 14px; color: var(--faint); font-variant-numeric: tabular-nums; }
.tl-co { font-size: clamp(18px, 2.2vw, 22px); font-weight: 500; letter-spacing: -0.01em; }
.tl-role { font-size: 15px; color: var(--muted); }

/* ========================================
   CONTACT
   ======================================== */
.contact { padding: 120px 0; text-align: center; }
.contact .eyebrow { margin-bottom: 28px; }
.contact-mail {
    display: inline-block;
    font-family: var(--serif); font-weight: 400;
    font-size: clamp(28px, 6vw, 64px);
    letter-spacing: -0.025em; line-height: 1.05;
    color: var(--text); word-break: break-word;
    border-bottom: 2px solid transparent;
    transition: var(--transition);
}
.contact-mail:hover { color: var(--accent); border-color: var(--accent); }
.contact-row {
    display: flex; justify-content: center; flex-wrap: wrap; gap: 28px;
    margin-top: 44px;
}
.contact-row a {
    font-size: 15px; color: var(--muted); transition: color var(--transition);
}
.contact-row a:hover { color: var(--text); }

/* ========================================
   FOOTER
   ======================================== */
.footer { border-top: 1px solid var(--line); padding: 32px 0; }
.footer .container { display: flex; justify-content: space-between; align-items: center; }
.footer span, .footer a { font-size: 13px; color: var(--faint); }
.footer a:hover { color: var(--text); }

/* ========================================
   ANIMATIONS
   ======================================== */
.fade-in { opacity: 0; transform: translateY(16px); transition: opacity 0.7s ease, transform 0.7s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }
.stats-row .stat:nth-child(2) { transition-delay: 0.06s; }
.stats-row .stat:nth-child(3) { transition-delay: 0.12s; }
.stats-row .stat:nth-child(4) { transition-delay: 0.18s; }

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 920px) {
    .cards { grid-template-columns: repeat(2, 1fr); }
    .partner-cards { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 820px) {
    .hero-grid { grid-template-columns: 1fr; gap: 40px; }
    .hero-portrait { max-width: 360px; aspect-ratio: 4 / 4.4; }
    .tl-row { grid-template-columns: 1fr; gap: 4px; }
}

@media (max-width: 640px) {
    .container, .nav-container { padding-left: 22px; padding-right: 22px; }
    .hero { padding: 48px 0 56px; }
    .block { padding: 72px 0; }
    .contact { padding: 80px 0; }
    .stats-row { grid-template-columns: repeat(2, 1fr); gap: 32px 20px; }
    .cards, .partner-cards { grid-template-columns: 1fr; }

    .nav-menu {
        position: fixed; inset: 0;
        background: var(--bg);
        flex-direction: column; justify-content: center; align-items: center;
        gap: 28px; opacity: 0; visibility: hidden;
        transition: var(--transition); z-index: 90;
    }
    .nav-menu.active { opacity: 1; visibility: visible; }
    .nav-menu .nav-link { font-size: 24px; font-family: var(--serif); }
    .nav-toggle { display: flex; z-index: 95; }
    .nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
    .nav-toggle.active span:nth-child(2) { opacity: 0; }
    .nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(4px, -4px); }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
    html { scroll-behavior: auto; }
    .fade-in { opacity: 1; transform: none; }
}