/* ==========================================================================
   Muhammad Mansoor — SaaS & AI Product Engineer
   Premium dark theme: strong typography, generous whitespace, thin borders,
   restrained motion. No external fonts or frameworks.
   ========================================================================== */

:root {
    --bg: #0A0D13;
    --bg-raised: #0D1119;
    --card: #10151F;
    --card-hover: #131926;
    --line: #1D2434;
    --line-strong: #2A3450;
    --text: #E9EDF4;
    --muted: #9AA6BB;
    --faint: #67748B;
    --accent: #5B9DFF;
    --accent-soft: #8FBDFF;
    --accent-btn: #2F6BE0;
    --accent-btn-hover: #3E7BFF;
    --accent-dim: rgba(91, 157, 255, .12);
    --green: #34D399;
    --red: #F87171;
    --radius: 14px;
    --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

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

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    font-size: 1.0625rem;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

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

.container { width: min(1120px, 92%); margin-inline: auto; }
.container-narrow { width: min(780px, 92%); }

.ic {
    width: 1.1em; height: 1.1em; flex: none;
    fill: none; stroke: currentColor; stroke-width: 2;
    stroke-linecap: round; stroke-linejoin: round;
}

.accent { color: var(--accent); }

::selection { background: rgba(91, 157, 255, .28); }

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

.skip-link {
    position: absolute; left: -999px; top: 0; z-index: 300;
    background: var(--accent-btn); color: #fff; padding: .6rem 1.2rem;
    border-radius: 0 0 10px 0; text-decoration: none; font-weight: 600;
}
.skip-link:focus { left: 0; }

/* ==========================================================================
   Header
   ========================================================================== */

.site-header {
    position: fixed; inset: 0 0 auto 0; z-index: 100;
    padding: 1rem 0;
    transition: background .25s ease, padding .25s ease, border-color .25s ease;
    border-bottom: 1px solid transparent;
}
.site-header.scrolled {
    background: rgba(10, 13, 19, .85);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom-color: var(--line);
    padding: .6rem 0;
}

.nav { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }

.brand { display: flex; align-items: center; gap: .65rem; text-decoration: none; }
.brand-mark {
    width: 38px; height: 38px; display: grid; place-items: center;
    background: linear-gradient(135deg, var(--accent-btn), var(--accent));
    color: #fff; font-weight: 800; font-size: 1.15rem; border-radius: 10px;
}
.brand-name { color: var(--text); font-weight: 700; letter-spacing: -.01em; }

.nav-menu { display: flex; align-items: center; gap: .2rem; list-style: none; }
.nav-menu a {
    display: inline-block; color: var(--muted); text-decoration: none;
    font-weight: 550; font-size: .95rem; padding: .5rem .8rem; border-radius: 8px;
    transition: color .2s;
}
.nav-menu a:hover { color: var(--text); }
.nav-menu a.active { color: var(--accent-soft); }
.nav-menu .nav-cta {
    background: var(--accent-btn); color: #fff; font-weight: 650;
    margin-left: .6rem; padding: .55rem 1.1rem; border-radius: 10px;
    transition: background .2s, transform .2s;
}
.nav-menu .nav-cta:hover { background: var(--accent-btn-hover); color: #fff; transform: translateY(-1px); }

.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: .5rem; z-index: 120; }
.nav-toggle span {
    display: block; width: 22px; height: 2px; background: var(--text);
    margin: 5px 0; border-radius: 2px; transition: transform .3s, opacity .3s;
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero { position: relative; overflow: hidden; padding: 10.5rem 0 6rem; }

.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.hero-bg::before {
    content: ""; position: absolute; inset: 0;
    background-image:
        linear-gradient(var(--line) 1px, transparent 1px),
        linear-gradient(90deg, var(--line) 1px, transparent 1px);
    background-size: 56px 56px;
    opacity: .35;
    mask-image: radial-gradient(ellipse 75% 65% at 50% 30%, #000 20%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse 75% 65% at 50% 30%, #000 20%, transparent 75%);
}
.hero-bg::after {
    content: ""; position: absolute; width: 640px; height: 640px;
    right: -180px; top: -220px; border-radius: 50%;
    background: radial-gradient(circle, rgba(91, 157, 255, .1), transparent 70%);
}

.hero-inner {
    position: relative;
    display: grid; grid-template-columns: 1.08fr .92fr;
    gap: 4rem; align-items: center;
}

.hero-eyebrow {
    display: inline-block;
    font-size: .82rem; font-weight: 650; letter-spacing: .14em; text-transform: uppercase;
    color: var(--accent-soft);
    border: 1px solid var(--line-strong); border-radius: 999px;
    padding: .38rem 1rem; margin-bottom: 1.4rem;
    background: var(--accent-dim);
}

.hero h1 {
    font-size: clamp(2.35rem, 5.2vw, 3.7rem);
    line-height: 1.08; letter-spacing: -.03em; font-weight: 750;
    margin-bottom: 1.2rem;
}

.hero-sub {
    color: var(--muted); font-size: clamp(1.05rem, 1.6vw, 1.2rem);
    max-width: 33rem; margin-bottom: 2rem;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: .9rem; margin-bottom: 1.8rem; }

.hero-cred {
    display: flex; align-items: flex-start; gap: .55rem;
    color: var(--faint); font-size: .95rem; max-width: 32rem;
}
.hero-cred .ic { color: var(--green); margin-top: .3em; }

/* Buttons */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: .55rem;
    font: inherit; font-weight: 650; font-size: 1rem; text-decoration: none;
    padding: .8rem 1.55rem; border-radius: 11px; cursor: pointer;
    border: 1px solid transparent;
    transition: transform .18s ease, background .18s ease, border-color .18s ease, color .18s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--accent-btn); color: #fff; }
.btn-primary:hover { background: var(--accent-btn-hover); }
.btn-ghost { color: var(--text); border-color: var(--line-strong); background: transparent; }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent-soft); }

/* --- Product engineering visual --- */
.hero-visual { display: flex; justify-content: center; }

.arch-panel {
    width: min(380px, 100%);
    display: flex; flex-direction: column; align-items: center;
    background:
        linear-gradient(var(--card), var(--card)) padding-box,
        linear-gradient(160deg, var(--line-strong), var(--line) 60%) border-box;
    border: 1px solid transparent; border-radius: 20px;
    padding: 2.2rem 1.8rem;
    position: relative;
}
.arch-panel::before {
    content: ""; position: absolute; inset: 0; border-radius: 20px; pointer-events: none;
    background-image:
        linear-gradient(rgba(255, 255, 255, .025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, .025) 1px, transparent 1px);
    background-size: 28px 28px;
}

.arch-node {
    position: relative; z-index: 1;
    font-size: .92rem; font-weight: 600; text-align: center;
    padding: .55rem 1.35rem; border-radius: 999px;
    border: 1px solid var(--line-strong); background: var(--bg-raised); color: var(--text);
}
.arch-start { border-style: dashed; color: var(--muted); background: transparent; }
.arch-mid { border-color: var(--line-strong); }
.arch-end { border-color: rgba(52, 211, 153, .45); color: var(--green); display: inline-flex; align-items: center; gap: .55rem; }

.live-dot {
    width: 8px; height: 8px; border-radius: 50%; background: var(--green);
    box-shadow: 0 0 0 0 rgba(52, 211, 153, .5);
    animation: pulse 2.4s ease-out infinite;
}
@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(52, 211, 153, .45); }
    70% { box-shadow: 0 0 0 9px rgba(52, 211, 153, 0); }
    100% { box-shadow: 0 0 0 0 rgba(52, 211, 153, 0); }
}

.arch-line {
    width: 1.5px; height: 26px; z-index: 1;
    background: linear-gradient(var(--line-strong), var(--accent));
    opacity: .8;
}

.arch-branches {
    list-style: none; z-index: 1;
    display: flex; flex-wrap: wrap; justify-content: center; gap: .45rem;
    padding: 0 .4rem;
}
.arch-branches li {
    font-size: .8rem; font-weight: 600; color: var(--accent-soft);
    border: 1px solid var(--line-strong); background: var(--accent-dim);
    padding: .3rem .8rem; border-radius: 8px;
}

/* ==========================================================================
   Sections
   ========================================================================== */

.section { padding: 6.5rem 0; }
.section-raised { background: var(--bg-raised); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

.page-hero { padding: 10.5rem 0 3.5rem; }

.section-eyebrow {
    font-size: .8rem; font-weight: 700; letter-spacing: .16em; text-transform: uppercase;
    color: var(--accent); margin-bottom: .7rem;
}

.section-title {
    font-size: clamp(1.75rem, 3.4vw, 2.5rem);
    letter-spacing: -.02em; line-height: 1.15; font-weight: 720;
    margin-bottom: 1rem;
}

.section-lead { color: var(--muted); max-width: 44rem; margin-bottom: 3rem; }

.section-more { margin-top: 2.5rem; }

.text-link {
    display: inline-flex; align-items: center; gap: .5rem;
    color: var(--accent-soft); font-weight: 650; text-decoration: none;
}
.text-link:hover { color: var(--accent); }
.text-link .ic { transition: transform .2s; }
.text-link:hover .ic { transform: translateX(3px); }

/* Cards */
.card {
    background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
    padding: 1.75rem;
    transition: transform .22s ease, border-color .22s ease, background .22s ease;
}
.card:hover { transform: translateY(-3px); border-color: var(--line-strong); background: var(--card-hover); }

.card-icon {
    display: inline-grid; place-items: center;
    width: 46px; height: 46px; border-radius: 12px; margin-bottom: 1.1rem;
    background: var(--accent-dim); color: var(--accent-soft);
    border: 1px solid var(--line-strong); font-size: 1.15rem;
}

.card h3 { font-size: 1.12rem; letter-spacing: -.01em; margin-bottom: .5rem; }
.card p { color: var(--muted); font-size: .96rem; }

/* Chips & tags */
.chip {
    display: inline-block; font-size: .8rem; font-weight: 600; white-space: nowrap;
    color: var(--accent-soft); background: var(--accent-dim);
    border: 1px solid var(--line-strong);
    padding: .28rem .8rem; border-radius: 999px;
}
.chip-muted { color: var(--faint); background: transparent; border-color: var(--line); }

.tag-list { list-style: none; display: flex; flex-wrap: wrap; gap: .45rem; }
.tag {
    font-size: .8rem; font-weight: 550; color: var(--muted);
    border: 1px solid var(--line); border-radius: 8px;
    padding: .26rem .7rem;
    transition: color .2s, border-color .2s;
}
.tag:hover { color: var(--accent-soft); border-color: var(--line-strong); }

/* ==========================================================================
   Services
   ========================================================================== */

.service-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.3rem; }

.service-card .area-list {
    list-style: none; display: flex; flex-wrap: wrap; gap: .4rem .9rem;
    margin-top: 1.1rem; padding-top: 1.1rem; border-top: 1px solid var(--line);
}
.area-list li {
    font-size: .84rem; font-weight: 550; color: var(--faint);
    display: inline-flex; align-items: center; gap: .45rem;
}
.area-list li::before {
    content: ""; width: 5px; height: 5px; border-radius: 50%;
    background: var(--accent); opacity: .8;
}

/* ==========================================================================
   Selected work
   ========================================================================== */

.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.3rem; }

.case-card { display: flex; flex-direction: column; }
.case-category {
    font-size: .76rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase;
    color: var(--accent); margin-bottom: .6rem;
}
.case-title { font-size: 1.18rem; }
.case-summary { flex: none; margin-bottom: 1.1rem; }

.case-areas {
    list-style: none; display: flex; flex-wrap: wrap; gap: .25rem .5rem;
    font-size: .84rem; color: var(--faint);
    margin-bottom: 1.1rem;
}
.case-areas li { display: inline-flex; align-items: center; gap: .5rem; }
.case-areas li:not(:last-child)::after { content: "·"; color: var(--line-strong); }

.case-card .tag-list { margin-top: auto; padding-top: 1rem; border-top: 1px solid var(--line); }

.case-link {
    display: inline-flex; align-items: center; gap: .5rem;
    margin-top: 1.2rem; color: var(--accent-soft); font-weight: 650;
    font-size: .95rem; text-decoration: none;
}
.case-link .ic { transition: transform .2s; }
.case-link:hover { color: var(--accent); }
.case-link:hover .ic { transform: translateX(3px); }

/* ==========================================================================
   Process
   ========================================================================== */

.process-grid {
    list-style: none; counter-reset: step;
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 2.5rem 2rem;
}
.process-step { border-top: 1px solid var(--line); padding-top: 1.4rem; position: relative; }
.process-step::before {
    content: ""; position: absolute; top: -1px; left: 0;
    width: 44px; height: 1.5px; background: var(--accent);
}
.process-number {
    font-size: .85rem; font-weight: 700; color: var(--accent);
    letter-spacing: .1em; display: block; margin-bottom: .6rem;
    font-variant-numeric: tabular-nums;
}
.process-step h3 { font-size: 1.08rem; margin-bottom: .4rem; letter-spacing: -.01em; }
.process-step p { color: var(--muted); font-size: .95rem; }

/* ==========================================================================
   Technical foundations
   ========================================================================== */

.skills-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.3rem; }

.skill-head { display: flex; align-items: center; justify-content: space-between; gap: .8rem; margin-bottom: 1.1rem; }
.skill-head h3 { font-size: 1.05rem; margin: 0; }

.skill-core { border-color: var(--line-strong); background: linear-gradient(180deg, rgba(91, 157, 255, .05), var(--card) 45%); }

.core-badge {
    font-size: .72rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase;
    color: var(--accent-soft); background: var(--accent-dim);
    border: 1px solid var(--line-strong);
    padding: .2rem .6rem; border-radius: 999px; flex: none;
}

/* ==========================================================================
   About
   ========================================================================== */

.about-grid {
    display: grid; grid-template-columns: 320px 1fr;
    gap: 3.5rem; align-items: start;
}

.about-photo img {
    border-radius: 18px; border: 1px solid var(--line);
    width: 100%; height: auto;
}
.about-principle {
    margin-top: 1.2rem; padding-left: 1rem; border-left: 2px solid var(--accent);
    font-weight: 700; letter-spacing: -.01em; line-height: 1.45; color: var(--text);
}

.about-copy p { color: var(--muted); margin-bottom: 1.15rem; max-width: 40rem; }
.about-copy p:nth-of-type(3) { color: var(--text); font-weight: 600; }

.about-location {
    display: flex; align-items: center; gap: .55rem;
    color: var(--faint); font-size: .95rem;
    padding-top: .6rem; border-top: 1px solid var(--line); max-width: 40rem;
}
.about-location .ic { color: var(--accent); }

/* ==========================================================================
   Experience
   ========================================================================== */

.exp-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.3rem; }

.exp-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; flex-wrap: wrap; margin-bottom: 1rem; }
.exp-company { color: var(--accent-soft); font-weight: 650; font-size: .93rem; }
.exp-meta { display: flex; flex-direction: column; align-items: flex-end; gap: .4rem; }

/* Timeline (full experience page) */
.timeline { list-style: none; position: relative; max-width: 860px; }
.timeline::before {
    content: ""; position: absolute; left: 22px; top: 10px; bottom: 10px; width: 1.5px;
    background: linear-gradient(var(--accent), var(--line) 70%, transparent);
}
.timeline-item { position: relative; padding-left: 70px; margin-bottom: 1.5rem; }
.timeline-marker {
    position: absolute; left: 0; top: 8px; width: 46px; height: 46px;
    display: grid; place-items: center; border-radius: 50%;
    background: var(--card); border: 1px solid var(--line-strong);
    color: var(--accent-soft); z-index: 1;
}
.timeline-role { font-size: 1.15rem; letter-spacing: -.01em; }

/* ==========================================================================
   Education & certifications
   ========================================================================== */

.edu-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 2rem; align-items: start; }
.edu-col-title { display: flex; align-items: center; gap: .6rem; font-size: 1.1rem; margin-bottom: 1.2rem; }
.edu-col-title .ic { color: var(--accent); width: 1.35em; height: 1.35em; }
.edu-card { margin-bottom: 1rem; }
.edu-card h4 { font-size: 1.02rem; margin-bottom: .3rem; }
.edu-card p { color: var(--muted); font-size: .92rem; margin-bottom: .8rem; }

.cert-list { list-style: none; display: grid; gap: 1rem; }
.cert-list li { display: flex; align-items: center; gap: .8rem; font-weight: 600; font-size: .98rem; }
.cert-list .ic { color: var(--green); }

/* ==========================================================================
   Case study detail
   ========================================================================== */

.case-detail { padding-top: 9.5rem; }

.breadcrumb { display: flex; align-items: center; gap: .6rem; font-size: .9rem; color: var(--faint); margin-bottom: 2rem; }
.breadcrumb a { color: var(--muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--accent-soft); }

.case-lead { color: var(--muted); font-size: 1.15rem; max-width: 42rem; margin-bottom: 1.6rem; }
.case-detail-tags { margin-bottom: 1rem; }

.case-detail section { margin-top: 3.2rem; }
.case-detail section h2 { font-size: 1.35rem; letter-spacing: -.01em; margin-bottom: 1rem; }
.case-detail section p { color: var(--muted); margin-bottom: 1rem; }

.case-insight {
    margin-top: 2.4rem; padding: 1.4rem 1.6rem;
    border-left: 3px solid var(--accent); border-radius: 0 var(--radius) var(--radius) 0;
    background: var(--card);
}
.case-insight p { color: var(--text); font-weight: 600; font-size: 1.05rem; }

.detail-list { list-style: none; display: grid; gap: .8rem; }
.detail-list li { display: flex; align-items: flex-start; gap: .7rem; color: var(--muted); }
.detail-list .ic { color: var(--green); margin-top: .32em; }

.detail-list-plain li { position: relative; display: block; padding-left: 1.3rem; }
.detail-list-plain li::before {
    content: ""; position: absolute; left: 0; top: .62em;
    width: 6px; height: 6px; border-radius: 50%; background: var(--accent);
}

/* ==========================================================================
   Contact
   ========================================================================== */

.contact-grid { display: grid; grid-template-columns: 1.45fr 1fr; gap: 2.5rem; align-items: start; }

.brief-form:hover { transform: none; }
.brief-form { padding: 2rem; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
.form-field { margin-bottom: 1.1rem; }

.form-field label {
    display: block; font-size: .9rem; font-weight: 650;
    margin-bottom: .45rem; color: var(--text);
}
.form-field .opt { color: var(--faint); font-weight: 500; }

.form-field input,
.form-field select,
.form-field textarea {
    width: 100%; font: inherit; font-size: .98rem;
    color: var(--text); background: var(--bg-raised);
    border: 1px solid var(--line-strong); border-radius: 10px;
    padding: .7rem .95rem;
    transition: border-color .2s;
}
.form-field textarea { resize: vertical; min-height: 120px; }
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus { outline: none; border-color: var(--accent); }
.form-field input::placeholder,
.form-field textarea::placeholder { color: var(--faint); }
.form-field select { appearance: none; -webkit-appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%); background-position: calc(100% - 20px) 50%, calc(100% - 15px) 50%; background-size: 5px 5px; background-repeat: no-repeat; }

.field-error { color: var(--red); font-size: .86rem; margin-top: .4rem; }
.form-field.invalid input,
.form-field.invalid textarea { border-color: var(--red); }

.form-note { color: var(--faint); font-size: .86rem; margin-bottom: 1.3rem; }
.form-actions { display: flex; flex-wrap: wrap; gap: .9rem; }
.form-status { margin-top: 1.1rem; color: var(--green); font-size: .93rem; }
.form-status a { color: var(--accent-soft); }

.contact-direct { padding-top: .4rem; }
.contact-direct h3 { font-size: 1.05rem; margin-bottom: 1.2rem; }

.direct-link {
    display: flex; align-items: center; gap: .75rem;
    color: var(--muted); text-decoration: none; font-weight: 550; font-size: .96rem;
    padding: .85rem 0; border-bottom: 1px solid var(--line);
    transition: color .2s;
    word-break: break-word;
}
.direct-link:hover { color: var(--accent-soft); }
.direct-link .ic { color: var(--accent); }

.direct-note {
    display: flex; align-items: center; gap: .75rem;
    color: var(--faint); font-size: .9rem; padding-top: 1.1rem;
}
.direct-note .ic { color: var(--faint); }

/* Page-level CTA (work / case study / experience pages) */
.page-cta {
    margin-top: 4.5rem; padding-top: 3rem; border-top: 1px solid var(--line);
    display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1.5rem;
}
.page-cta h2 { font-size: 1.4rem; letter-spacing: -.01em; }

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer { background: #080B10; border-top: 1px solid var(--line); padding: 3.5rem 0 2rem; }

.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 2.5rem; margin-bottom: 2.5rem; }

.footer-name { font-weight: 750; font-size: 1.1rem; letter-spacing: -.01em; }
.footer-role { color: var(--accent-soft); font-weight: 600; font-size: .92rem; margin: .25rem 0 .9rem; }
.footer-tag { color: var(--faint); font-size: .93rem; max-width: 22rem; }

.footer-head {
    font-size: .78rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase;
    color: var(--faint); margin-bottom: .9rem;
}
.footer-col { display: flex; flex-direction: column; align-items: flex-start; gap: .55rem; }
.footer-col a { color: var(--muted); text-decoration: none; font-size: .95rem; transition: color .2s; word-break: break-word; }
.footer-col a:hover { color: var(--accent-soft); }

.footer-base {
    display: flex; justify-content: space-between; flex-wrap: wrap; gap: .8rem;
    padding-top: 1.6rem; border-top: 1px solid var(--line);
    color: var(--faint); font-size: .88rem;
}

/* ==========================================================================
   Reveal animation
   ========================================================================== */

.reveal { opacity: 0; transform: translateY(22px); transition: opacity .6s ease, transform .6s ease; }
.reveal.visible { opacity: 1; transform: none; }

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

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 1080px) {
    .case-grid, .skills-grid, .exp-grid { grid-template-columns: repeat(2, 1fr); }
    .process-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 960px) {
    .hero { padding: 8.5rem 0 4.5rem; }
    .hero-inner { grid-template-columns: 1fr; gap: 3rem; }
    .hero-visual { order: 2; }
    .hero-sub { max-width: 38rem; }
    .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }
    .about-photo { max-width: 300px; }
    .edu-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; gap: 2rem; }
    .service-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
    .section { padding: 4.5rem 0; }
    .page-hero { padding: 8.5rem 0 2.5rem; }
    .case-detail { padding-top: 8rem; }
    .case-grid, .skills-grid, .exp-grid, .process-grid { grid-template-columns: 1fr; }
    .exp-meta { align-items: flex-start; }
    .form-row { grid-template-columns: 1fr; gap: 0; }
    .timeline::before { left: 16px; }
    .timeline-item { padding-left: 52px; }
    .timeline-marker { width: 34px; height: 34px; top: 10px; }
    .timeline-marker .ic { width: .95em; height: .95em; }
    .page-cta { flex-direction: column; align-items: flex-start; }

    /* Mobile navigation */
    .nav-toggle { display: block; }
    .nav-menu {
        position: fixed; inset: 0 0 auto 0; z-index: 110;
        flex-direction: column; align-items: stretch; gap: .25rem;
        background: rgba(8, 11, 16, .98);
        border-bottom: 1px solid var(--line);
        padding: 5.5rem 1.4rem 1.6rem;
        transform: translateY(-102%); transition: transform .32s ease;
    }
    .nav-menu.open { transform: none; }
    .nav-menu a { display: block; text-align: center; padding: .9rem; font-size: 1.05rem; }
    .nav-menu .nav-cta { margin: .5rem 0 0; }
    .nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .nav-toggle.open span:nth-child(2) { opacity: 0; }
    .nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
}

@media (max-width: 480px) {
    .hero-actions, .form-actions { flex-direction: column; align-items: stretch; }
    .hero-eyebrow { font-size: .72rem; letter-spacing: .1em; white-space: normal; text-align: center; }
    .arch-panel { padding: 1.8rem 1.1rem; }
    .brief-form { padding: 1.4rem; }
    .brand-name { font-size: .95rem; }
    .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
}

/* ==========================================================================
   /perfstats dashboard (private)
   ========================================================================== */

.stats-grid {
    display: grid; grid-template-columns: repeat(3, 1fr);
    gap: 1.1rem; margin-bottom: 1.5rem;
}
.stat-card:hover { transform: none; }
.stat-label {
    font-size: .76rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase;
    color: var(--faint); margin-bottom: .4rem;
}
.stat-value { font-size: 2.1rem; font-weight: 750; letter-spacing: -.02em; line-height: 1.1; color: var(--text); }
.stat-unit { font-size: 1rem; font-weight: 600; color: var(--muted); }
.delta { font-size: .82rem; font-weight: 600; margin-top: .5rem; color: var(--faint); }
.delta-up { color: var(--green); }
.delta-down { color: var(--red); }

.chart-card { margin-bottom: 1.5rem; }
.chart-card:hover { transform: none; }
.chart-head {
    display: flex; align-items: center; justify-content: space-between;
    flex-wrap: wrap; gap: 1rem; margin-bottom: 1.2rem;
}
.chart-head h2 { font-size: 1.15rem; letter-spacing: -.01em; }

.chart-legend { list-style: none; display: flex; gap: 1.2rem; font-size: .84rem; color: var(--muted); }
.chart-legend li { display: inline-flex; align-items: center; gap: .45rem; }
.legend-swatch { width: 14px; height: 8px; border-radius: 2px; display: inline-block; }
.legend-swatch-bar { background: var(--accent); opacity: .75; }
.legend-swatch-line { background: var(--green); height: 3px; }

.chart-toggle { display: inline-flex; border: 1px solid var(--line-strong); border-radius: 10px; overflow: hidden; }
.chart-toggle button {
    font: inherit; font-size: .88rem; font-weight: 650; cursor: pointer;
    color: var(--muted); background: transparent; border: 0;
    padding: .45rem 1rem; transition: background .2s, color .2s;
}
.chart-toggle button + button { border-left: 1px solid var(--line-strong); }
.chart-toggle button[aria-pressed="true"] { background: var(--accent-btn); color: #fff; }
.chart-toggle button:not([aria-pressed="true"]):hover { color: var(--text); }

.chart-panel svg { width: 100%; height: auto; display: block; }
.chart-bar { fill: var(--accent); opacity: .72; transition: opacity .15s; }
.chart-bar:hover { opacity: 1; }
.chart-line { stroke: var(--green); stroke-width: 2; stroke-linejoin: round; }
.chart-dot { fill: var(--green); }
.chart-grid { stroke: var(--line); stroke-width: 1; }
.chart-label { fill: var(--faint); font-size: 10px; font-family: var(--font); }

.rank-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; margin-bottom: 1.5rem; }
.rank-grid .card:hover, .table-card:hover { transform: none; }
.rank-title { font-size: 1.05rem; letter-spacing: -.01em; margin-bottom: 1.1rem; }
.rank-empty { color: var(--faint); font-size: .92rem; }
.rank-list { list-style: none; display: grid; gap: .7rem; }
.rank-row {
    display: grid; grid-template-columns: minmax(110px, 1.2fr) 1fr auto;
    align-items: center; gap: .9rem; font-size: .88rem;
}
.rank-label { color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.rank-bar { height: 6px; background: var(--bg-raised); border-radius: 999px; overflow: hidden; }
.rank-bar-fill { display: block; height: 100%; background: var(--accent); border-radius: 999px; opacity: .8; }
.rank-count { color: var(--text); font-weight: 650; font-variant-numeric: tabular-nums; }

.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 10px; }
.traffic-table { width: 100%; min-width: 820px; border-collapse: collapse; font-size: .84rem; }
.traffic-table th {
    text-align: left; font-size: .72rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase;
    color: var(--faint); padding: .65rem .8rem; border-bottom: 1px solid var(--line-strong);
    background: var(--bg-raised); white-space: nowrap;
}
.traffic-table td {
    padding: .55rem .8rem; border-bottom: 1px solid var(--line);
    color: var(--muted); vertical-align: top;
}
.traffic-table tr:last-child td { border-bottom: 0; }
.mono { font-family: ui-monospace, "Cascadia Mono", "SF Mono", Menlo, Consolas, monospace; font-size: .82rem; white-space: nowrap; }
.ua-cell { max-width: 260px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.status-chip {
    display: inline-block; font-weight: 700; font-size: .78rem;
    padding: .12rem .55rem; border-radius: 999px; border: 1px solid;
    font-variant-numeric: tabular-nums;
}
.st-ok { color: var(--green); border-color: rgba(52, 211, 153, .4); }
.st-redir { color: var(--accent-soft); border-color: var(--line-strong); }
.st-warn { color: #FBBF24; border-color: rgba(251, 191, 36, .4); }
.st-err { color: var(--red); border-color: rgba(248, 113, 113, .4); }

.stats-note { color: var(--faint); font-size: .86rem; max-width: 46rem; }

/* ==========================================================================
   Error page
   ========================================================================== */

.error-hero { padding-top: 11rem; text-align: center; }
.error-code {
    font-size: clamp(3.5rem, 10vw, 6rem); font-weight: 800; line-height: 1;
    color: var(--accent); opacity: .35; letter-spacing: -.04em; margin-bottom: .6rem;
}
.error-hero .section-lead { margin-inline: auto; }
.error-actions { justify-content: center; margin-top: 1rem; }

@media (max-width: 900px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .rank-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr; }
    .rank-row { grid-template-columns: 1fr auto; }
    .rank-bar { display: none; }
    .error-actions { flex-direction: column; align-items: stretch; }
}