/* =====================================================
   Mehedi Hasan — Portfolio | Dark Modern Premium Theme
   ===================================================== */
:root {
    --bg: #07070d;
    --bg-2: #0c0c16;
    --surface: #101018;
    --surface-2: #15151f;
    --border: rgba(255, 255, 255, .08);
    --text: #f2f2f7;
    --muted: #9a9ab0;
    --accent: #6c5ce7;
    --accent-2: #00d2ff;
    --grad: linear-gradient(135deg, #6c5ce7, #00d2ff);
    --radius: 18px;
    --font-h: 'Space Grotesk', sans-serif;
    --font-b: 'Inter', sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-b);
    line-height: 1.65;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { font-family: var(--font-h); line-height: 1.2; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); font-weight: 700; }
h2 { font-size: clamp(1.6rem, 3.4vw, 2.4rem); font-weight: 700; }
h3 { font-size: 1.25rem; font-weight: 600; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }

.container { width: min(1180px, 92%); margin: 0 auto; }
.muted { color: var(--muted); }
.grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.inline-link { color: var(--accent-2); font-weight: 600; }

/* ---------- background decor ---------- */
.bg-grid {
    position: fixed; inset: 0; z-index: -3; 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: 56px 56px;
    mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, #000 40%, transparent 100%);
}
.bg-glow { position: fixed; border-radius: 50%; filter: blur(120px); z-index: -2; pointer-events: none; opacity: .5; }
.glow-1 { width: 520px; height: 520px; top: -160px; left: -120px; background: rgba(108, 92, 231, .35); }
.glow-2 { width: 460px; height: 460px; top: 20%; right: -160px; background: rgba(0, 210, 255, .18); }

/* ---------- buttons ---------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
    padding: .9rem 1.8rem; border-radius: 999px; font-weight: 600; font-size: .95rem;
    border: 1px solid transparent; cursor: pointer; transition: transform .2s, box-shadow .2s, background .2s;
    font-family: var(--font-b);
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 8px 28px rgba(108, 92, 231, .4); }
.btn-primary:hover { box-shadow: 0 12px 36px rgba(108, 92, 231, .55); }
.btn-ghost { background: rgba(255,255,255,.05); border-color: var(--border); color: var(--text); }
.btn-ghost:hover { background: rgba(255,255,255,.1); }
.btn-sm { padding: .6rem 1.2rem; font-size: .85rem; }
.btn-block { width: 100%; }

/* ---------- nav ---------- */
.nav { position: sticky; top: 0; z-index: 100; backdrop-filter: blur(14px); background: rgba(7,7,13,.72); border-bottom: 1px solid var(--border); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo { font-family: var(--font-h); font-weight: 700; font-size: 1.35rem; display: flex; align-items: center; gap: .5rem; }
.logo-mark {
    width: 34px; height: 34px; border-radius: 10px; background: var(--grad);
    display: inline-flex; align-items: center; justify-content: center; font-weight: 700; color: #fff;
}
.logo-dot { color: var(--accent-2); }
.nav-links { display: flex; gap: 2rem; }
.nav-links a { color: var(--muted); font-weight: 500; font-size: .95rem; transition: color .2s; position: relative; }
.nav-links a:hover, .nav-links a.active { color: #fff; }
.nav-links a.active::after { content: ''; position: absolute; left: 0; right: 0; bottom: -8px; height: 2px; background: var(--grad); border-radius: 2px; }
.nav-cta { display: flex; align-items: center; gap: 1rem; }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; flex-direction: column; gap: 5px; padding: 6px; }
.nav-toggle span { width: 24px; height: 2px; background: #fff; border-radius: 2px; transition: .25s; }

/* ---------- hero ---------- */
.hero { padding: 5.5rem 0 4rem; }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 3.5rem; align-items: center; }
.pill {
    display: inline-flex; align-items: center; gap: .6rem; font-size: .82rem; font-weight: 500;
    padding: .45rem 1rem; border-radius: 999px; background: rgba(0,210,255,.08);
    border: 1px solid rgba(0,210,255,.25); color: #bfefff; margin-bottom: 1.4rem;
}
.pulse { width: 8px; height: 8px; border-radius: 50%; background: #00e676; box-shadow: 0 0 0 0 rgba(0,230,118,.6); animation: pulse 2s infinite; }
@keyframes pulse { 70% { box-shadow: 0 0 0 10px rgba(0,230,118,0); } 100% { box-shadow: 0 0 0 0 rgba(0,230,118,0); } }
.lead { color: var(--muted); font-size: 1.1rem; margin: 1.2rem 0 2rem; max-width: 560px; }
.hero-btns { display: flex; gap: 1rem; flex-wrap: wrap; }
.hero-meta { display: flex; gap: 1.6rem; margin-top: 1.8rem; color: var(--muted); font-size: .88rem; flex-wrap: wrap; }

.profile-card {
    background: linear-gradient(160deg, var(--surface-2), var(--surface));
    border: 1px solid var(--border); border-radius: 24px; padding: 2.4rem 2rem; text-align: center;
    box-shadow: 0 30px 80px rgba(0,0,0,.5); position: relative; overflow: hidden;
}
.profile-card::before { content: ''; position: absolute; inset: 0 0 auto 0; height: 120px; background: var(--grad); opacity: .25; filter: blur(40px); }
.avatar {
    width: 96px; height: 96px; border-radius: 50%; background: var(--grad); margin: 0 auto 1rem;
    display: flex; align-items: center; justify-content: center; font-family: var(--font-h);
    font-size: 2.4rem; font-weight: 700; color: #fff; border: 3px solid rgba(255,255,255,.2); position: relative;
}
.avatar-lg { width: 130px; height: 130px; font-size: 3.2rem; margin: 0; }
.avatar-img { object-fit: cover; padding: 0; }
.mini-stats { display: flex; justify-content: center; gap: 2rem; margin: 1.6rem 0; }
.mini-stats div { display: flex; flex-direction: column; }
.mini-stats strong { font-family: var(--font-h); font-size: 1.5rem; }
.mini-stats span { color: var(--muted); font-size: .78rem; }
.profile-card .btn-block { margin-top: .4rem; position: relative; }

/* ---------- sections ---------- */
.section { padding: 5rem 0; }
.section-alt { background: var(--bg-2); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 3rem; }
.section-head p { margin-top: .8rem; }
.kicker {
    display: inline-block; text-transform: uppercase; letter-spacing: .14em; font-size: .75rem; font-weight: 600;
    color: var(--accent-2); margin-bottom: .9rem;
}
.page-hero { padding: 4.5rem 0 3rem; text-align: center; }

/* ---------- cards ---------- */
.cards-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.6rem; }
.card {
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 2rem; transition: transform .25s, border-color .25s, box-shadow .25s; position: relative; overflow: hidden;
}
.card:hover { transform: translateY(-6px); border-color: rgba(108,92,231,.5); box-shadow: 0 20px 50px rgba(0,0,0,.45); }
.card-icon {
    width: 52px; height: 52px; border-radius: 14px; display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem; background: rgba(108,92,231,.14); border: 1px solid rgba(108,92,231,.3); margin-bottom: 1.2rem;
}
.card h3 { margin-bottom: .6rem; }
.card p { font-size: .94rem; margin-bottom: 1rem; }
.card-link { color: var(--accent-2); font-weight: 600; font-size: .9rem; }

/* ---------- stats ---------- */
.stats { padding: 2.5rem 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); background: rgba(255,255,255,.015); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; text-align: center; }
.stat strong { font-family: var(--font-h); font-size: 2.2rem; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; display: block; }
.stat span:last-child { color: var(--muted); font-size: .88rem; }

/* ---------- work cards ---------- */
.work-thumb { height: 150px; border-radius: 12px; margin: -0.5rem -0.5rem 1.2rem; display: flex; align-items: flex-end; padding: 1rem; }
.work-thumb span { background: rgba(0,0,0,.45); backdrop-filter: blur(6px); color: #fff; font-size: .75rem; font-weight: 600; padding: .3rem .8rem; border-radius: 999px; }
.tag-row { display: flex; gap: .5rem; flex-wrap: wrap; }
.tag { font-size: .75rem; padding: .28rem .75rem; border-radius: 999px; background: rgba(255,255,255,.06); border: 1px solid var(--border); color: var(--muted); }

/* ---------- steps ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.6rem; }
.step { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.8rem; }
.step-n { font-family: var(--font-h); font-size: 2rem; font-weight: 700; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.step h3 { margin: .8rem 0 .5rem; }
.step p { font-size: .9rem; }

/* ---------- testimonials ---------- */
.quote-card .stars { color: #fdcb6e; letter-spacing: .2em; margin-bottom: 1rem; }
.quote-by { margin-top: 1.2rem; display: flex; flex-direction: column; }
.quote-by span { font-size: .85rem; }

/* ---------- CTA panel ---------- */
.cta-panel {
    background: linear-gradient(160deg, rgba(108,92,231,.16), rgba(0,210,255,.07));
    border: 1px solid rgba(108,92,231,.35); border-radius: 28px; padding: 4rem 2rem; text-align: center;
    position: relative; overflow: hidden;
}
.cta-panel::before { content: ''; position: absolute; width: 400px; height: 400px; border-radius: 50%; background: rgba(108,92,231,.25); filter: blur(100px); top: -200px; left: 50%; transform: translateX(-50%); }
.cta-panel h2, .cta-panel p, .cta-panel .hero-btns { position: relative; }
.cta-panel p { max-width: 560px; margin: 1rem auto 2rem; }

/* ---------- about ---------- */
.about-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 3.5rem; align-items: start; }
.skills-list { display: grid; grid-template-columns: 1fr 1fr; gap: 1.4rem 3rem; max-width: 900px; margin: 0 auto; }
.skill-head { display: flex; justify-content: space-between; margin-bottom: .5rem; font-size: .95rem; }
.skill-head span { color: var(--accent-2); font-weight: 600; }
.skill-bar { height: 8px; border-radius: 99px; background: rgba(255,255,255,.07); overflow: hidden; }
.skill-bar i { display: block; height: 100%; background: var(--grad); border-radius: 99px; width: 0; transition: width 1.4s cubic-bezier(.2,.7,.2,1); }

.timeline { max-width: 760px; margin: 0 auto; position: relative; padding-left: 2rem; }
.timeline::before { content: ''; position: absolute; left: 7px; top: 6px; bottom: 6px; width: 2px; background: linear-gradient(var(--accent), var(--accent-2)); border-radius: 2px; }
.tl-item { position: relative; padding: 0 0 2.4rem 1.4rem; }
.tl-item::before { content: ''; position: absolute; left: -2rem; top: 6px; width: 16px; height: 16px; border-radius: 50%; background: var(--bg); border: 3px solid var(--accent-2); }
.tl-period { font-size: .78rem; font-weight: 600; color: var(--accent-2); text-transform: uppercase; letter-spacing: .08em; }
.tl-item h3 { margin: .4rem 0 .2rem; }
.tl-org { color: var(--muted); font-size: .9rem; margin-bottom: .5rem; }

/* ---------- services page ---------- */
.service-rows { display: flex; flex-direction: column; gap: 2rem; max-width: 1020px; margin: 0 auto; }
.service-row { display: grid; grid-template-columns: 1.2fr .8fr; gap: 2rem; align-items: stretch; }
.service-row.flip .service-main { order: 2; }
.service-main h2 { margin: 0 0 .8rem; }
.service-points h4 { margin-bottom: 1rem; color: var(--accent-2); }
.check-list { list-style: none; display: flex; flex-direction: column; gap: .7rem; }
.check-list li { padding-left: 1.8rem; position: relative; font-size: .94rem; color: var(--muted); }
.check-list li::before { content: '✓'; position: absolute; left: 0; color: #00e676; font-weight: 700; }

/* ---------- work filter ---------- */
.filter-row { display: flex; gap: .7rem; justify-content: center; flex-wrap: wrap; margin-bottom: 2.4rem; }
.filter-btn {
    padding: .55rem 1.3rem; border-radius: 999px; background: rgba(255,255,255,.05);
    border: 1px solid var(--border); color: var(--muted); font-weight: 500; cursor: pointer;
    font-family: var(--font-b); font-size: .88rem; transition: .2s;
}
.filter-btn:hover { color: #fff; border-color: rgba(108,92,231,.5); }
.filter-btn.active { background: var(--grad); color: #fff; border-color: transparent; }
.work-card.hide { display: none; }

/* ---------- contact ---------- */
.contact-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 2rem; align-items: start; }
.contact-card { display: flex; flex-direction: column; gap: .4rem; }
.contact-card h3, .card h3 { margin-bottom: 1.2rem; }
.contact-line { display: flex; gap: 1rem; align-items: flex-start; padding: .9rem 0; border-bottom: 1px solid var(--border); }
.contact-line:last-child { border-bottom: none; }
.contact-line .card-icon { margin-bottom: 0; flex-shrink: 0; }
.form-group { margin-bottom: 1.2rem; }
.form-group label { display: block; font-size: .85rem; font-weight: 600; margin-bottom: .45rem; color: var(--muted); }
.form-group input, .form-group select, .form-group textarea {
    width: 100%; padding: .85rem 1rem; border-radius: 12px; background: rgba(255,255,255,.04);
    border: 1px solid var(--border); color: #fff; font-family: var(--font-b); font-size: .95rem; transition: border-color .2s;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(108,92,231,.2); }
.form-group select option { background: var(--surface-2); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }
.alert { padding: 1rem 1.2rem; border-radius: 12px; margin-bottom: 1.4rem; font-size: .92rem; }
.alert-ok { background: rgba(0,230,118,.1); border: 1px solid rgba(0,230,118,.35); color: #7dffa8; }
.alert-err { background: rgba(255,80,80,.1); border: 1px solid rgba(255,80,80,.35); color: #ff9a9a; }

/* ---------- footer ---------- */
.footer { border-top: 1px solid var(--border); background: var(--bg-2); padding: 4rem 0 0; margin-top: 2rem; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 2.5rem; padding-bottom: 3rem; }
.footer-brand p { color: var(--muted); font-size: .9rem; margin: 1rem 0 1.4rem; max-width: 300px; }
.footer-col h4 { font-size: .85rem; text-transform: uppercase; letter-spacing: .1em; color: var(--muted); margin-bottom: 1.1rem; }
.footer-col a, .footer-col span { display: block; color: var(--muted); font-size: .92rem; margin-bottom: .6rem; transition: color .2s; }
.footer-col a:hover { color: #fff; }
.social-row { display: flex; gap: .7rem; }
.social-btn {
    width: 40px; height: 40px; border-radius: 12px; display: flex; align-items: center; justify-content: center;
    background: rgba(255,255,255,.05); border: 1px solid var(--border); color: var(--muted); transition: .2s;
}
.social-btn:hover { color: #fff; border-color: var(--accent); background: rgba(108,92,231,.2); transform: translateY(-2px); }
.footer-bottom { border-top: 1px solid var(--border); padding: 1.4rem 0; display: flex; justify-content: space-between; align-items: center; color: var(--muted); font-size: .85rem; flex-wrap: wrap; gap: .8rem; }
.status-dot { display: inline-flex; align-items: center; gap: .5rem; }
.status-dot i { width: 8px; height: 8px; border-radius: 50%; background: #00e676; box-shadow: 0 0 8px #00e676; }

/* ---------- reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s cubic-bezier(.2,.7,.2,1); }
.reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }

/* ---------- responsive ---------- */
@media (max-width: 960px) {
    .hero-grid, .about-grid, .contact-grid { grid-template-columns: 1fr; }
    .cards-3 { grid-template-columns: 1fr 1fr; }
    .steps { grid-template-columns: 1fr 1fr; }
    .service-row { grid-template-columns: 1fr; }
    .service-row.flip .service-main { order: 0; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .stats-grid { grid-template-columns: 1fr 1fr; gap: 1.8rem; }
}
@media (max-width: 640px) {
    .nav-links {
        position: fixed; top: 72px; left: 0; right: 0; background: rgba(7,7,13,.97); backdrop-filter: blur(14px);
        flex-direction: column; padding: 1.5rem 4%; gap: 1.2rem; border-bottom: 1px solid var(--border);
        transform: translateY(-130%); transition: transform .3s; z-index: 99;
    }
    .nav-links.open { transform: none; }
    .nav-toggle { display: flex; }
    .nav-cta .btn { display: none; }
    .cards-3, .steps { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .skills-list { grid-template-columns: 1fr; }
    .section { padding: 3.5rem 0; }
    .footer-grid { grid-template-columns: 1fr; }
}

/* Blog */
.post-meta{font-size:.82rem;color:#8f8fa8;margin-bottom:.7rem;letter-spacing:.03em;text-transform:uppercase}
.post-content{max-width:760px;margin:0 auto;font-size:1.06rem;line-height:1.85;color:#cfcfe0}
.post-content p{margin-bottom:1.4rem}
.post-content h2{font-size:1.35rem;margin:2.2rem 0 1rem;color:#fff}
.post-cta{max-width:760px;margin:3rem auto 0;padding:2rem;border-radius:18px;background:#101018;border:1px solid rgba(108,92,231,.35);text-align:center}
.post-cta h3{margin-bottom:.5rem}
.post-cta .btn{margin-top:1rem}
.work-thumb-img{padding:0;overflow:hidden;position:relative}
.work-thumb-img img{width:100%;height:100%;object-fit:cover;display:block}
.work-thumb-img span{position:absolute;left:1rem;bottom:1rem}
.quote-shot{width:100%;border-radius:12px;margin-top:1rem;border:1px solid rgba(255,255,255,.1);display:block}
.service-banner{width:100%;height:170px;object-fit:cover;border-radius:12px;margin-bottom:1rem;display:block}
a.card-click{display:block;color:inherit;text-decoration:none;transition:transform .25s ease,border-color .25s ease}
a.card-click:hover{transform:translateY(-4px);border-color:rgba(0,210,255,.4)}
.svc-title-link{color:inherit;text-decoration:none}
.svc-title-link:hover{color:#00d2ff}
.service-detail-banner{width:100%;max-height:360px;object-fit:cover;border-radius:16px;margin:1.2rem 0}
.card-mini-link{display:block;color:inherit;text-decoration:none}
.card-mini-link:hover{border-color:rgba(0,210,255,.4)}
.logo{display:inline-flex;align-items:center;gap:.45rem}
.logo-img{height:36px;width:36px;border-radius:10px;display:block}
.quote-head{display:flex;align-items:center;gap:.8rem;margin-bottom:.7rem}
.quote-avatar{width:52px;height:52px;border-radius:50%;object-fit:cover;flex-shrink:0;display:inline-flex;align-items:center;justify-content:center}
.quote-avatar-initial{background:linear-gradient(135deg,#7c3aed,#00d2ff);color:#fff;font-weight:700;font-size:1.35rem}