/* ==========================================================
   Nijat Guluzadə — şəxsi sayt
   Tipografiya: IBM Plex Sans Condensed (başlıq) / Sans (mətn) / Mono (etiket)
   ========================================================== */

:root {
    --bg: #EAEEF4;
    --surface: #FFFFFF;
    --surface-2: #F3F6FA;
    --ink: #10151E;
    --muted: #56637A;
    --line: #D2DAE6;
    --shadow: 0 1px 2px rgba(16, 21, 30, .06), 0 12px 30px rgba(16, 21, 30, .07);
    --radius: 14px;
    --maxw: 1080px;
}

html[data-theme="dark"] {
    --bg: #0C0F14;
    --surface: #141922;
    --surface-2: #1A2029;
    --ink: #E6ECF6;
    --muted: #93A1B6;
    --line: #262F3C;
    --shadow: 0 1px 2px rgba(0, 0, 0, .5), 0 16px 34px rgba(0, 0, 0, .35);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 88px; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
    font-size: 17px;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    transition: background .25s ease, color .25s ease;
}

h1, h2, h3, h4 {
    font-family: "IBM Plex Sans Condensed", "IBM Plex Sans", sans-serif;
    line-height: 1.1;
    letter-spacing: -.01em;
    margin: 0;
}

a { color: inherit; }

img { max-width: 100%; display: block; }

.skip-link {
    position: absolute; left: -9999px; top: 0;
    background: var(--accent); color: #fff; padding: 10px 16px; z-index: 99;
}
.skip-link:focus { left: 12px; top: 12px; }

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-radius: 4px;
}

/* ---------- Üst panel ---------- */

.topbar {
    position: sticky; top: 0; z-index: 40;
    display: flex; align-items: center; gap: 20px;
    padding: 14px 24px;
    background: var(--bg);
    background: color-mix(in srgb, var(--bg) 86%, transparent);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line);
}

.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 600; }
.brand-mark {
    width: 14px; height: 14px; border-radius: 3px;
    background: var(--accent);

}
.brand-name { font-family: "IBM Plex Sans Condensed", sans-serif; font-size: 18px; }

.nav { display: flex; gap: 22px; margin-left: auto; }
.nav a {
    text-decoration: none; font-size: 14px; color: var(--muted);
    font-family: "IBM Plex Mono", monospace; letter-spacing: .01em;
    padding: 4px 0; border-bottom: 1px solid transparent;
}
.nav a:hover { color: var(--ink); border-bottom-color: var(--accent); }

/* Rejim düyməsi */
.theme-toggle {
    display: flex; align-items: center; gap: 10px;
    background: none; border: 1px solid var(--line); border-radius: 999px;
    padding: 5px 12px 5px 6px; cursor: pointer; color: var(--muted);
    font-family: "IBM Plex Mono", monospace; font-size: 12px;
}
.theme-toggle:hover { color: var(--ink); border-color: var(--accent); }
.theme-toggle-track {
    width: 38px; height: 20px; border-radius: 999px;
    background: var(--surface-2); border: 1px solid var(--line);
    position: relative; display: inline-block;
}
.theme-toggle-knob {
    position: absolute; top: 2px; left: 2px;
    width: 14px; height: 14px; border-radius: 50%;
    background: var(--accent);
    transition: transform .25s ease;
}
html[data-theme="dark"] .theme-toggle-knob { transform: translateX(18px); }

/* ---------- Hero ---------- */

.hero { padding: 96px 24px 72px; }
.hero-inner { max-width: var(--maxw); margin: 0 auto; }

.eyebrow {
    font-family: "IBM Plex Mono", monospace; font-size: 12px; letter-spacing: .14em;
    text-transform: uppercase; color: var(--muted); margin: 0 0 18px;
}

.hero-name {
    font-size: clamp(46px, 11vw, 104px);
    font-weight: 700;
    letter-spacing: -.03em;
    margin-bottom: 8px;
}
.hero-name::after {
    content: ""; display: block;
    width: 96px; height: 6px; margin-top: 18px;
    background: var(--accent);
    border-radius: 2px;
}

.hero-role {
    font-family: "IBM Plex Mono", monospace;
    font-size: 15px; color: var(--accent); margin: 22px 0 0;
}
.hero-tagline { font-size: 20px; color: var(--muted); max-width: 620px; margin: 12px 0 0; }

.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }

.btn {
    display: inline-block; text-decoration: none; cursor: pointer;
    font-family: "IBM Plex Sans", sans-serif; font-size: 15px; font-weight: 500;
    padding: 12px 22px; border-radius: 999px; border: 1px solid transparent;
    transition: transform .15s ease, background .2s ease, border-color .2s ease;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { transform: translateY(-2px); }
.btn-ghost { border-color: var(--line); background: var(--surface); color: var(--ink); }
.btn-ghost:hover { border-color: var(--accent); transform: translateY(-2px); }

.status-pill {
    display: inline-flex; align-items: center; gap: 9px;
    margin: 34px 0 0; padding: 7px 14px;
    border: 1px solid var(--line); border-radius: 999px;
    background: var(--surface);
    font-family: "IBM Plex Mono", monospace; font-size: 12px; color: var(--muted);
}
.status-pill .dot {
    width: 8px; height: 8px; border-radius: 50%; background: #17B26A;
    box-shadow: 0 0 0 4px rgba(23, 178, 106, .18);
}

/* ---------- Bölmə çərçivəsi ---------- */

.section { max-width: var(--maxw); margin: 0 auto; padding: 60px 24px; }

.section-head {
    display: flex; align-items: baseline; gap: 16px;
    padding-bottom: 16px; margin-bottom: 34px;
    border-bottom: 1px solid var(--line);
}
.section-tag {
    font-family: "IBM Plex Mono", monospace; font-size: 12px;
    color: var(--accent); letter-spacing: .1em;
}
.section-head h2 { font-size: clamp(28px, 5vw, 40px); font-weight: 700; }
.section-action {
    margin-left: auto; font-family: "IBM Plex Mono", monospace; font-size: 12px;
    text-decoration: none; color: var(--muted);
    border: 1px solid var(--line); border-radius: 999px; padding: 5px 12px;
}
.section-action:hover { color: var(--accent); border-color: var(--accent); }

/* ---------- Haqqımda ---------- */

.about-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 44px; align-items: start; }
.about-text p { margin: 0 0 18px; }
.about-text .lead { font-size: 21px; color: var(--ink); font-weight: 500; line-height: 1.45; }

.about-photo { border-radius: var(--radius); border: 1px solid var(--line); margin-bottom: 20px; }

.fact-list {
    margin: 0; padding: 6px 0;
    border-top: 1px solid var(--line);
}
.fact {
    display: flex; justify-content: space-between; gap: 16px;
    padding: 12px 0; border-bottom: 1px solid var(--line);
}
.fact dt { font-family: "IBM Plex Mono", monospace; font-size: 12px; color: var(--muted); }
.fact dd { margin: 0; font-size: 15px; text-align: right; }

/* ---------- Bacarıqlar ---------- */

.skill-groups { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }

.skill-group {
    background: var(--surface); border: 1px solid var(--line);
    border-radius: var(--radius); padding: 24px;
}
.skill-group h3 { font-size: 22px; margin-bottom: 4px; }
.muted-mono { font-family: "IBM Plex Mono", monospace; font-size: 12px; color: var(--muted); margin: 0; }

.skill-list { list-style: none; margin: 22px 0 0; padding: 0; }
.skill { padding: 11px 0; border-top: 1px solid var(--line); }
.skill-name { display: block; font-size: 15px; margin-bottom: 8px; }

.skill-meter { display: flex; gap: 4px; }
.skill-meter .tick {
    flex: 1; height: 6px; border-radius: 2px;
    background: var(--surface-2); border: 1px solid var(--line);
}
.skill-meter .tick.on { background: var(--accent); border-color: var(--accent); }

/* ---------- Saytlar ---------- */

.project-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; }

.project {
    background: var(--surface); border: 1px solid var(--line);
    border-radius: var(--radius); overflow: hidden;
    display: flex; flex-direction: column;
    transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.project:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--accent); }
.project.featured { border-color: var(--accent); }

.project-shot { background: var(--surface-2); border-bottom: 1px solid var(--line); }
.project-shot img { width: 100%; height: 190px; object-fit: cover; }

.project-body { padding: 22px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.project-year { font-family: "IBM Plex Mono", monospace; font-size: 12px; color: var(--muted); margin: 0; }
.project h3 { font-size: 24px; }
.project-summary { margin: 0; color: var(--muted); font-size: 15px; }

.tag-row { list-style: none; display: flex; flex-wrap: wrap; gap: 7px; margin: 4px 0 0; padding: 0; }
.tag-row li {
    font-family: "IBM Plex Mono", monospace; font-size: 11px;
    padding: 4px 9px; border-radius: 6px;
    background: var(--surface-2); border: 1px solid var(--line); color: var(--muted);
}

.project-link {
    margin-top: auto; padding-top: 12px;
    text-decoration: none; color: var(--accent);
    font-family: "IBM Plex Mono", monospace; font-size: 13px;
}
.project-link:hover { text-decoration: underline; }

/* ---------- CV ---------- */

.cv-heading {
    font-size: 20px; margin: 34px 0 16px;
    font-family: "IBM Plex Mono", monospace; font-weight: 500;
    letter-spacing: .06em; text-transform: uppercase; color: var(--muted);
}

.timeline { list-style: none; margin: 0; padding: 0 0 0 22px; border-left: 2px solid var(--line); }
.timeline li { position: relative; padding: 0 0 28px 22px; }
.timeline li::before {
    content: ""; position: absolute; left: -30px; top: 8px;
    width: 12px; height: 12px; border-radius: 50%;
    background: var(--bg); border: 3px solid var(--accent);
}
.timeline-dates { font-family: "IBM Plex Mono", monospace; font-size: 12px; color: var(--muted); }
.timeline-body h4 { font-size: 21px; margin: 4px 0 2px; }
.timeline-org { color: var(--accent); font-size: 14px; margin: 0 0 6px; }
.timeline-body p { margin: 0; color: var(--muted); font-size: 15px; }

.cert-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.cert-list li {
    display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px;
    background: var(--surface); border: 1px solid var(--line);
    border-radius: 10px; padding: 14px 18px;
}
.cert-list span { font-family: "IBM Plex Mono", monospace; font-size: 12px; color: var(--muted); }

/* ---------- Əlaqə ---------- */

.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 34px; align-items: start; }

.contact-line {
    display: flex; justify-content: space-between; align-items: center; gap: 14px;
    padding: 16px 0; border-bottom: 1px solid var(--line);
    text-decoration: none;
}
.contact-line span { font-family: "IBM Plex Mono", monospace; font-size: 12px; color: var(--muted); }
.contact-line strong { font-weight: 500; }
.contact-line:hover strong { color: var(--accent); }

.contact-form {
    background: var(--surface); border: 1px solid var(--line);
    border-radius: var(--radius); padding: 26px;
    display: grid; gap: 16px;
}
.contact-form label {
    display: grid; gap: 7px;
    font-family: "IBM Plex Mono", monospace; font-size: 12px; color: var(--muted);
}
.contact-form input, .contact-form textarea {
    font-family: "IBM Plex Sans", sans-serif; font-size: 15px;
    padding: 12px 14px; border-radius: 10px; resize: vertical;
    border: 1px solid var(--line); background: var(--surface-2); color: var(--ink);
}
.contact-form input:focus, .contact-form textarea:focus { border-color: var(--accent); outline: none; }
.contact-form .btn { justify-self: start; }
.honeypot { position: absolute; left: -9999px; opacity: 0; height: 0; }

.form-note {
    margin: 0; padding: 12px 14px; border-radius: 10px; font-size: 14px;
    border: 1px solid var(--line);
}
.form-note.ok { border-color: #17B26A; color: #0E8552; background: rgba(23, 178, 106, .1); }
.form-note.error { border-color: #E2504A; color: #C23B36; background: rgba(226, 80, 74, .1); }
html[data-theme="dark"] .form-note.ok { color: #5BD9A0; }
html[data-theme="dark"] .form-note.error { color: #FF8C86; }

/* ---------- Footer ---------- */

.footer {
    max-width: var(--maxw); margin: 40px auto 0; padding: 30px 24px 50px;
    border-top: 1px solid var(--line);
    display: flex; flex-wrap: wrap; gap: 10px 26px; align-items: center;
    font-size: 14px; color: var(--muted);
}
.footer p { margin: 0; }
.footer a { color: var(--muted); }
.footer a:hover { color: var(--accent); }
.footer p:last-child { margin-left: auto; }

/* ---------- Responsiv ---------- */

@media (max-width: 860px) {
    .about-grid, .contact-grid { grid-template-columns: 1fr; }
    .nav { display: none; }
    .theme-toggle { margin-left: auto; }
    .hero { padding: 64px 20px 48px; }
    .section { padding: 44px 20px; }
    .footer p:last-child { margin-left: 0; }
}

@media (prefers-reduced-motion: reduce) {
    * { animation: none !important; transition: none !important; }
    html { scroll-behavior: auto; }
}