/* Beyza Tuncel portfolio — "detection" theme */
:root {
    --bg: #eef0f8;
    --surface: #ffffff;
    --ink: #15173b;
    --muted: #5d6086;
    --line: #d9dcf0;
    --violet: #5b3df5;
    --coral: #ff5a4d;
    --mint: #1fa88a;
    --radius: 18px;
    --font-display: "Bricolage Grotesque", "Segoe UI", system-ui, sans-serif;
    --font-body: "DM Sans", "Segoe UI", system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: var(--font-body);
    font-size: 17px;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
a:focus-visible, .btn:focus-visible { outline: 3px solid var(--violet); outline-offset: 3px; }

/* ---------- Top bar ---------- */
.topbar {
    position: sticky; top: 0; z-index: 20;
    display: flex; justify-content: space-between; align-items: center;
    padding: 14px clamp(20px, 5vw, 64px);
    background: rgba(238, 240, 248, .85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line);
}
.brand { font-family: var(--font-display); font-weight: 800; font-size: 1.15rem; text-decoration: none; }
.nav { display: flex; gap: 6px; align-items: center; }
.nav a { text-decoration: none; padding: 8px 14px; border-radius: 999px; font-weight: 500; color: var(--muted); transition: background .2s, color .2s; }
.nav a:hover { background: var(--surface); color: var(--ink); }
.nav .nav-cta { background: var(--ink); color: #fff; }
.nav .nav-cta:hover { background: var(--violet); color: #fff; }

/* ---------- Layout ---------- */
main { max-width: 1120px; margin: 0 auto; padding: 0 clamp(20px, 5vw, 40px); }
.section { padding: clamp(56px, 9vw, 110px) 0 0; }
.section h2 {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: clamp(1.9rem, 4vw, 2.7rem);
    letter-spacing: -0.02em;
    line-height: 1.1;
    margin: 0 0 28px;
}

/* ---------- Hero ---------- */
.hero {
    display: grid;
    grid-template-columns: 1.25fr .75fr;
    gap: clamp(32px, 6vw, 80px);
    align-items: center;
    padding-top: clamp(40px, 7vw, 90px);
}
.hero-hello { color: var(--violet); font-weight: 700; margin: 0 0 14px; }
.hero h1 {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: clamp(2.5rem, 6.2vw, 4.7rem);
    line-height: 1.04;
    letter-spacing: -0.035em;
    margin: 0 0 24px;
}
.detect {
    position: relative;
    display: inline-block;
    padding: 0 .18em;
    margin: 0 .04em;
    border: 3px solid var(--coral);
    border-radius: 6px;
    background: rgba(255, 90, 77, .08);
}
.tag {
    font-family: var(--font-body);
    font-style: normal;
    font-size: .8rem;
    font-weight: 700;
    letter-spacing: 0;
    line-height: 1;
    color: #fff;
    background: var(--coral);
    padding: 5px 8px;
    border-radius: 4px 4px 4px 0;
}
.detect .tag { position: absolute; left: -3px; bottom: 100%; margin-bottom: 3px; border-radius: 4px 4px 4px 0; white-space: nowrap; }
.hero-sub { max-width: 54ch; color: var(--muted); font-size: 1.12rem; margin: 0 0 32px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

.btn {
    display: inline-block;
    text-decoration: none;
    font-weight: 700;
    padding: 14px 26px;
    border-radius: 999px;
    border: 2px solid var(--ink);
    transition: transform .2s, background .2s, color .2s, border-color .2s;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover { background: var(--violet); border-color: var(--violet); }
.btn-ghost { background: transparent; color: var(--ink); }
.btn-ghost:hover { background: var(--ink); color: #fff; }

.social { display: flex; gap: 10px; margin-top: 30px; }
.social a {
    width: 44px; height: 44px;
    display: grid; place-items: center;
    font-size: 1.25rem;
    text-decoration: none;
    border-radius: 50%;
    background: var(--surface);
    border: 1px solid var(--line);
    transition: background .2s, color .2s;
}
.social a:hover { background: var(--violet); color: #fff; border-color: var(--violet); }

/* Photo frame with detection corners */
.frame { position: relative; margin: 0; aspect-ratio: 4 / 5; border-radius: var(--radius); overflow: visible; }
.frame img { width: 100%; height: 100%; object-fit: cover; border-radius: var(--radius); background: var(--line); }
.corner { position: absolute; width: 34px; height: 34px; border: 4px solid var(--violet); }
.c1 { top: -12px; left: -12px; border-right: 0; border-bottom: 0; border-top-left-radius: 10px; }
.c2 { top: -12px; right: -12px; border-left: 0; border-bottom: 0; border-top-right-radius: 10px; }
.c3 { bottom: -12px; left: -12px; border-right: 0; border-top: 0; border-bottom-left-radius: 10px; }
.c4 { bottom: -12px; right: -12px; border-left: 0; border-top: 0; border-bottom-right-radius: 10px; }
.tag-photo { position: absolute; left: -12px; top: -34px; background: var(--violet); }
.scan {
    position: absolute; left: 0; right: 0; top: 0; height: 3px;
    background: var(--violet);
    box-shadow: 0 0 22px 6px rgba(91, 61, 245, .45);
    animation: scan 3.2s ease-in-out 1 .4s both;
    opacity: 0;
}
@keyframes scan {
    0% { top: 0; opacity: 1; }
    100% { top: 100%; opacity: 0; }
}

/* ---------- About ---------- */
.about-body { columns: 2; column-gap: 48px; color: var(--muted); max-width: 900px; }
.about-body p { margin: 0 0 1em; break-inside: avoid; }

/* ---------- Skills ---------- */
.skills { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 12px; }
.skills li {
    display: flex; align-items: center; gap: 10px;
    padding: 12px 20px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 999px;
    font-weight: 500;
    transition: border-color .2s, transform .2s;
}
.skills li:hover { border-color: var(--violet); transform: translateY(-2px); }
.skills i { color: var(--violet); width: 1.1em; text-align: center; }

/* ---------- Projects ---------- */
.projects { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.project {
    display: flex; flex-direction: column;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    transition: border-color .25s, transform .25s;
}
.project:hover { border-color: var(--coral); transform: translateY(-4px); }
.shot { aspect-ratio: 16 / 10; overflow: hidden; background: var(--ink); }
.shot img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.project:hover .shot img { transform: scale(1.05); }
.project-body { display: flex; flex-direction: column; flex: 1; padding: 22px; }
.project h3 { font-family: var(--font-display); font-size: 1.3rem; line-height: 1.2; margin: 0 0 10px; }
.project p { color: var(--muted); margin: 0 0 16px; font-size: .98rem; }
.chips { list-style: none; padding: 0; margin: 0 0 20px; display: flex; flex-wrap: wrap; gap: 8px; }
.chips li { font-size: .82rem; font-weight: 700; color: var(--violet); background: rgba(91, 61, 245, .1); padding: 4px 11px; border-radius: 999px; }
.link { margin-top: auto; font-weight: 700; text-decoration: none; border-bottom: 2px solid var(--coral); align-self: flex-start; padding-bottom: 2px; }
.link:hover { color: var(--coral); }

/* ---------- Education ---------- */
.edu {
    display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap;
    padding: 28px 32px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-left: 6px solid var(--mint);
    border-radius: var(--radius);
}
.edu h3 { font-family: var(--font-display); font-size: 1.4rem; margin: 0 0 4px; }
.edu p { margin: 0; color: var(--muted); }
.years { font-weight: 700; color: var(--mint); }

/* ---------- Contact ---------- */
.contact {
    margin-top: clamp(56px, 9vw, 110px);
    padding: clamp(40px, 7vw, 80px);
    background: var(--ink);
    color: #fff;
    border-radius: 28px;
}
.contact h2 { max-width: 16ch; }
.contact p { color: #b9bce0; margin: 0 0 28px; }
.contact .btn-primary { background: var(--coral); border-color: var(--coral); }
.contact .btn-primary:hover { background: #fff; border-color: #fff; color: var(--ink); }
.contact .btn-ghost { color: #fff; border-color: #fff; }
.contact .btn-ghost:hover { background: #fff; color: var(--ink); }

.footer { text-align: center; color: var(--muted); font-size: .9rem; padding: 40px 20px; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
    .hero { grid-template-columns: 1fr; }
    .frame { max-width: 340px; margin: 24px 12px 0; }
    .projects { grid-template-columns: 1fr; }
    .about-body { columns: 1; }
}
@media (max-width: 600px) {
    .nav a:not(.nav-cta) { display: none; }
}
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    * { transition: none !important; }
    .scan { animation: none; }
}