/* =====================================================================
   Fawzi Harami — Portfolio
   Redesigned stylesheet (vanilla CSS, light + dark themes)
   ===================================================================== */

/* ---------- Design tokens ---------- */
:root {
  --bg: #f6f7fb;
  --bg-alt: #edf0f7;
  --surface: #ffffff;
  --surface-2: #f1f3f9;
  --text: #15203a;
  --text-soft: #4a5670;
  --text-mute: #7a87a3;
  --border: #e2e7f1;
  --accent: #e8930c;
  --accent-2: #16b8a6;
  --navy: #0b1220;
  --shadow: 0 10px 30px rgba(20, 30, 60, 0.08);
  --shadow-lg: 0 18px 50px rgba(20, 30, 60, 0.14);
  --radius: 16px;
  --radius-sm: 10px;
  --maxw: 1160px;
  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-display: "Space Grotesk", var(--font);
  --t: 0.28s cubic-bezier(0.22, 1, 0.36, 1);
}

html[data-theme="dark"] {
  --bg: #0b1220;
  --bg-alt: #0f1830;
  --surface: #131d36;
  --surface-2: #18233f;
  --text: #eef2fb;
  --text-soft: #b9c3da;
  --text-mute: #8593b3;
  --border: #233152;
  --accent: #f5a623;
  --accent-2: #2dd4bf;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 18px 50px rgba(0, 0, 0, 0.5);
}

/* ---------- Reset & base ---------- */
*,
*::before,
*::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

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

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.18; font-weight: 700; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px; font-weight: 600; font-size: 0.95rem; cursor: pointer;
  padding: 13px 26px; border-radius: 999px; border: 1.5px solid transparent;
  transition: transform var(--t), background var(--t), color var(--t), box-shadow var(--t);
}
.btn-sm { padding: 9px 18px; font-size: 0.85rem; }
.btn-primary { background: var(--accent); color: #1a1206; box-shadow: 0 8px 22px rgba(230, 147, 12, 0.32); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 28px rgba(230, 147, 12, 0.45); }
.btn-ghost { border-color: var(--border); color: var(--text); background: transparent; }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-3px); }

/* ---------- Scroll progress ---------- */
.scroll-progress {
  position: fixed; top: 0; left: 0; height: 3px; width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  z-index: 1000;
}

/* ---------- Navbar ---------- */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 900;
  padding: 16px 0; transition: padding var(--t), background var(--t), box-shadow var(--t), border-color var(--t);
  border-bottom: 1px solid transparent;
}
.navbar.scrolled {
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  padding: 10px 0; box-shadow: var(--shadow); border-color: var(--border);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.brand { display: flex; align-items: center; gap: 10px; font-family: var(--font-display); font-weight: 700; font-size: 1.15rem; }
.brand-mark { width: 34px; height: 34px; }
.brand-accent { color: var(--accent); }

.nav-links { display: flex; gap: 6px; }
.nav-links a {
  position: relative; padding: 8px 14px; border-radius: 999px;
  font-size: 0.92rem; font-weight: 500; color: var(--text-soft); transition: color var(--t), background var(--t);
}
.nav-links a:hover, .nav-links a.active { color: var(--text); background: var(--surface-2); }
.nav-links a.active { color: var(--accent); }

.nav-actions { display: flex; align-items: center; gap: 10px; }
.theme-toggle {
  width: 40px; height: 40px; border-radius: 50%; border: 1.5px solid var(--border);
  background: var(--surface); color: var(--text); font-size: 1.1rem; cursor: pointer;
  display: grid; place-items: center; transition: var(--t);
}
.theme-toggle:hover { border-color: var(--accent); color: var(--accent); transform: rotate(20deg); }

.nav-burger { display: none; flex-direction: column; gap: 5px; width: 42px; height: 42px;
  border: 1.5px solid var(--border); border-radius: 10px; background: var(--surface); cursor: pointer;
  align-items: center; justify-content: center; }
.nav-burger span { width: 20px; height: 2px; background: var(--text); border-radius: 2px; transition: var(--t); }
.nav-burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-burger.open span:nth-child(2) { opacity: 0; }
.nav-burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center;
  padding: 120px 0 70px; overflow: hidden; }
.hero-bg {
  position: absolute; inset: 0; z-index: -2;
  background: url("../../images/hero-bg.jpg") center/cover no-repeat;
}
.hero-bg::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(100deg,
      color-mix(in srgb, var(--bg) 94%, transparent) 0%,
      color-mix(in srgb, var(--bg) 78%, transparent) 42%,
      color-mix(in srgb, var(--bg) 30%, transparent) 100%);
}
html[data-theme="dark"] .hero-bg::after {
  background: linear-gradient(100deg, rgba(11,18,32,0.93) 0%, rgba(11,18,32,0.78) 45%, rgba(11,18,32,0.35) 100%);
}

.hero-inner { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 50px; align-items: center; }
.eyebrow { text-transform: uppercase; letter-spacing: 3px; font-size: 0.78rem; font-weight: 600;
  color: var(--accent); margin-bottom: 14px; }
.hero-text h1 { font-size: clamp(2.4rem, 5.2vw, 3.9rem); margin-bottom: 8px; }
.hero-text .accent { color: var(--accent); }
.hero-sub { font-size: clamp(1.05rem, 2.4vw, 1.45rem); color: var(--text-soft); font-weight: 600;
  margin-bottom: 18px; }
.hero-lede { font-size: 1.05rem; color: var(--text-soft); max-width: 540px; margin-bottom: 28px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 26px; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 18px 26px; font-size: 0.9rem; color: var(--text-mute); }
.hero-meta li { display: flex; align-items: center; gap: 8px; }
.hero-meta .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent-2); }

.hero-card { background: color-mix(in srgb, var(--surface) 86%, transparent); border: 1px solid var(--border);
  border-radius: 24px; padding: 26px; box-shadow: var(--shadow-lg); backdrop-filter: blur(8px); }
.hero-portrait { border-radius: 18px; overflow: hidden; aspect-ratio: 1; margin-bottom: 20px;
  border: 1px solid var(--border); }
.hero-portrait img { width: 100%; height: 100%; object-fit: cover; }
.hero-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; text-align: center; }
.stat strong { display: block; font-family: var(--font-display); font-size: 1.7rem; color: var(--accent); }
.stat span { font-size: 0.72rem; color: var(--text-mute); }

.scroll-cue { position: absolute; bottom: 24px; left: 50%; transform: translateX(-50%); font-size: 1.4rem;
  color: var(--text-mute); animation: bob 1.8s ease-in-out infinite; }
@keyframes bob { 0%,100% { transform: translate(-50%,0); } 50% { transform: translate(-50%,8px); } }

/* ---------- Sections ---------- */
.section { padding: 96px 0; }
.section-alt { background: var(--bg-alt); }
.section-dark { background: var(--navy); color: #eef2fb; }
.section-dark .section-title, .section-dark h3 { color: #fff; }

.section-head { max-width: 720px; margin: 0 auto 54px; text-align: center; }
.kicker { display: inline-block; font-size: 0.78rem; font-weight: 700; letter-spacing: 2px;
  text-transform: uppercase; color: var(--accent); margin-bottom: 12px; }
.section-title { font-size: clamp(1.8rem, 4vw, 2.6rem); margin-bottom: 14px; }
.section-lede { color: var(--text-soft); font-size: 1.02rem; }
.section-dark .section-lede { color: #aebbd6; }

/* ---------- About ---------- */
.about-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 40px; align-items: start; }
.about-text p { color: var(--text-soft); margin-bottom: 16px; }
.about-info { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin: 26px 0; }
.about-info div { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 14px 16px; }
.about-info span { display: block; font-size: 0.74rem; text-transform: uppercase; letter-spacing: 1px;
  color: var(--text-mute); margin-bottom: 4px; }
.about-info strong { font-size: 0.98rem; }

.about-highlights { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px; box-shadow: var(--shadow); }
.about-highlights h3 { font-size: 1.2rem; margin-bottom: 16px; }
.check-list li { position: relative; padding-left: 30px; margin-bottom: 13px; color: var(--text-soft);
  font-size: 0.96rem; }
.check-list li::before { content: "\2713"; position: absolute; left: 0; top: 1px; width: 20px; height: 20px;
  background: color-mix(in srgb, var(--accent) 18%, transparent); color: var(--accent);
  border-radius: 50%; display: grid; place-items: center; font-size: 0.72rem; font-weight: 700; }

/* ---------- Skills ---------- */
.skills-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px 40px; margin-bottom: 52px; }
.skill-top { display: flex; justify-content: space-between; font-weight: 600; font-size: 0.95rem; margin-bottom: 8px; }
.skill-top em { font-style: normal; color: var(--accent); }
.bar { height: 9px; background: var(--surface-2); border-radius: 999px; overflow: hidden;
  border: 1px solid var(--border); }
.bar i { display: block; height: 100%; width: 0; border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2)); transition: width 1.2s ease; }

.tool-cloud { text-align: center; }
.tool-cloud h3 { font-size: 1.2rem; margin-bottom: 18px; }
.chips { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.chips span { background: var(--surface); border: 1px solid var(--border); color: var(--text-soft);
  padding: 8px 16px; border-radius: 999px; font-size: 0.85rem; font-weight: 500; transition: var(--t); }
.chips span:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-3px); }

/* ---------- Projects ---------- */
.project-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.project-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow); transition: transform var(--t), box-shadow var(--t); }
.project-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.project-img { aspect-ratio: 3 / 2; overflow: hidden; }
.project-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.project-card:hover .project-img img { transform: scale(1.07); }
.project-body { padding: 20px 22px 24px; }
.tag { display: inline-block; font-size: 0.72rem; font-weight: 700; letter-spacing: 1px; text-transform: uppercase;
  color: var(--accent-2); background: color-mix(in srgb, var(--accent-2) 14%, transparent);
  padding: 4px 10px; border-radius: 999px; margin-bottom: 12px; }
.project-body h3 { font-size: 1.12rem; margin-bottom: 10px; }
.project-body p { font-size: 0.92rem; color: var(--text-soft); }
.project-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
.project-links a { font-size: 0.82rem; font-weight: 600; color: var(--accent);
  border: 1.5px solid color-mix(in srgb, var(--accent) 45%, transparent); border-radius: 999px;
  padding: 5px 14px; transition: var(--t); }
.project-links a:hover { background: var(--accent); color: #1a1206; border-color: var(--accent); transform: translateY(-2px); }

/* ---------- Timeline ---------- */
.timeline { position: relative; max-width: 820px; margin: 0 auto; padding-left: 8px; }
.timeline::before { content: ""; position: absolute; left: 7px; top: 6px; bottom: 6px; width: 2px;
  background: linear-gradient(var(--accent), var(--accent-2)); opacity: 0.5; }
.t-item { position: relative; padding: 0 0 38px 40px; }
.t-item:last-child { padding-bottom: 0; }
.t-dot { position: absolute; left: 0; top: 6px; width: 16px; height: 16px; border-radius: 50%;
  background: var(--accent); box-shadow: 0 0 0 6px color-mix(in srgb, var(--accent) 26%, transparent); }
.t-content { background: color-mix(in srgb, #fff 6%, transparent); border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius); padding: 22px 24px; }
html[data-theme="light"] .t-content,
:root:not([data-theme="dark"]) .section-dark .t-content {
  background: rgba(255,255,255,0.06); border-color: rgba(255,255,255,0.14); }
.t-date { display: inline-block; font-size: 0.78rem; font-weight: 600; color: var(--accent);
  background: color-mix(in srgb, var(--accent) 16%, transparent); padding: 4px 12px; border-radius: 999px;
  margin-bottom: 10px; }
.t-content h3 { font-size: 1.15rem; margin-bottom: 2px; }
.t-content h4 { font-size: 0.95rem; color: var(--accent-2); font-weight: 600; margin-bottom: 10px; }
.t-content p { font-size: 0.93rem; color: #b9c3da; }

/* ---------- Education ---------- */
.edu-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.edu-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 26px; box-shadow: var(--shadow); transition: transform var(--t), box-shadow var(--t);
  border-top: 3px solid var(--accent); }
.edu-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.edu-year { display: inline-block; font-family: var(--font-display); font-size: 1.6rem; color: var(--accent);
  font-weight: 700; margin-bottom: 8px; }
.edu-card h3 { font-size: 1.08rem; margin-bottom: 4px; }
.edu-card h4 { font-size: 0.92rem; color: var(--accent-2); font-weight: 600; margin-bottom: 12px; }
.edu-card p { font-size: 0.92rem; color: var(--text-soft); }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.contact-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px 22px; text-align: center; box-shadow: var(--shadow);
  transition: transform var(--t), box-shadow var(--t), border-color var(--t); }
.contact-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--accent); }
.c-icon { display: grid; place-items: center; width: 48px; height: 48px; margin: 0 auto 14px;
  border-radius: 50%; background: color-mix(in srgb, var(--accent) 16%, transparent); color: var(--accent);
  font-size: 1.2rem; font-weight: 700; }
.c-label { display: block; font-size: 0.74rem; text-transform: uppercase; letter-spacing: 1px;
  color: var(--text-mute); margin-bottom: 4px; }
.contact-card strong { font-size: 0.95rem; word-break: break-word; }

/* ---------- Footer ---------- */
.footer { background: var(--navy); color: #cdd6ea; padding: 40px 0; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 18px; flex-wrap: wrap; }
.footer .brand { color: #fff; }
.footer-copy { font-size: 0.86rem; color: #9aa7c4; }
.footer-social { display: flex; gap: 10px; }
.footer-social a { width: 38px; height: 38px; border-radius: 50%; display: grid; place-items: center;
  background: rgba(255,255,255,0.08); color: #fff; font-weight: 700; font-size: 0.9rem; transition: var(--t); }
.footer-social a:hover { background: var(--accent); color: #1a1206; transform: translateY(-3px); }

/* ---------- Back to top ---------- */
.to-top { position: fixed; right: 22px; bottom: 22px; width: 46px; height: 46px; border-radius: 50%;
  background: var(--accent); color: #1a1206; display: grid; place-items: center; font-size: 1.2rem;
  box-shadow: var(--shadow-lg); opacity: 0; pointer-events: none; transform: translateY(12px);
  transition: var(--t); z-index: 800; }
.to-top.show { opacity: 1; pointer-events: auto; transform: translateY(0); }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* ---------- Engineering Tools ---------- */
.tools-wrap { max-width: 980px; margin: 0 auto; }
.tool-tabs { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-bottom: 26px; }
.tool-tab { font-family: var(--font); font-weight: 600; font-size: 0.9rem; cursor: pointer;
  padding: 10px 18px; border-radius: 999px; border: 1.5px solid var(--border);
  background: var(--surface); color: var(--text-soft); transition: var(--t); }
.tool-tab:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
.tool-tab.active { background: var(--accent); color: #1a1206; border-color: var(--accent);
  box-shadow: 0 8px 22px rgba(230, 147, 12, 0.32); }

.tool-panel { display: none; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); }
.tool-panel.active { display: block; animation: toolfade 0.4s ease; }
@keyframes toolfade { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

.tool-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: start; }
.tool-inputs h3 { font-size: 1.18rem; margin-bottom: 8px; }
.tool-desc { font-size: 0.88rem; color: var(--text-soft); margin-bottom: 18px; }
.tool-inputs label { display: block; font-size: 0.82rem; font-weight: 600; color: var(--text-soft);
  margin-bottom: 14px; }
.tool-inputs input, .tool-inputs select { width: 100%; margin-top: 6px; padding: 11px 13px;
  font-family: var(--font); font-size: 0.95rem; color: var(--text); background: var(--bg);
  border: 1.5px solid var(--border); border-radius: var(--radius-sm); transition: var(--t); }
.tool-inputs input:focus, .tool-inputs select:focus { outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(230, 147, 12, 0.18); }

.tool-results { background: var(--bg-alt); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 22px; min-height: 100%; }
.tool-results h4 { font-size: 0.78rem; letter-spacing: 1.5px; text-transform: uppercase; color: var(--accent);
  margin-bottom: 14px; }
.result-row { display: flex; align-items: baseline; justify-content: space-between; gap: 12px;
  padding: 9px 0; border-bottom: 1px dashed var(--border); }
.result-row:last-child { border-bottom: none; }
.result-row span { font-size: 0.86rem; color: var(--text-soft); }
.result-row strong { font-family: var(--font-display); font-size: 1.02rem; color: var(--text); text-align: right; }
.result-row.primary strong { color: var(--accent); font-size: 1.22rem; }
.result-hint { margin-top: 14px; font-size: 0.82rem; line-height: 1.5; color: var(--text-mute); }
.result-ok { color: var(--accent-2); font-weight: 700; }
.result-warn { color: #e2574c; font-weight: 700; }
.color-swatch { display: inline-block; width: 18px; height: 18px; border-radius: 4px; vertical-align: middle;
  margin-right: 8px; border: 1px solid rgba(0,0,0,0.25); }
.cc-preview { display: flex; align-items: center; justify-content: center; gap: 4px; margin-bottom: 16px;
  padding: 18px 10px; background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-sm); }
.cc-body { position: relative; width: 150px; height: 42px; background: #d8c9a3; border-radius: 8px;
  display: flex; align-items: center; justify-content: center; gap: 9px; box-shadow: inset 0 -6px 10px rgba(0,0,0,0.12); }
.cc-body::before, .cc-body::after { content: ""; position: absolute; top: 50%; width: 26px; height: 3px;
  background: var(--text-mute); transform: translateY(-50%); }
.cc-body::before { left: -26px; } .cc-body::after { right: -26px; }
.cc-band { width: 12px; height: 100%; border-radius: 2px; }

/* Cable sizing result table */
.cab-table-wrap { margin-top: 14px; overflow-x: auto; }
.cab-table { width: 100%; border-collapse: collapse; font-size: 0.82rem; }
.cab-table th, .cab-table td { padding: 6px 8px; text-align: right; border-bottom: 1px solid var(--border); }
.cab-table th { color: var(--text-mute); font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; font-size: 0.72rem; }
.cab-table td:first-child, .cab-table th:first-child { text-align: left; font-family: var(--font-display); color: var(--text); }
.cab-table tr.cab-pass td { color: var(--accent-2); }
.cab-table tr.cab-fail td { color: var(--text-mute); }
.cab-table tbody tr:hover { background: var(--bg); }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero-inner { grid-template-columns: 1fr; gap: 36px; }
  .hero-card { max-width: 420px; }
  .about-grid { grid-template-columns: 1fr; }
  .project-grid, .edu-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: repeat(2, 1fr); }
  .tool-grid { grid-template-columns: 1fr; gap: 20px; }
}

@media (max-width: 760px) {
  .nav-links {
    position: fixed; top: 64px; right: 14px; left: 14px;
    flex-direction: column; gap: 4px; background: var(--surface);
    border: 1px solid var(--border); border-radius: var(--radius); padding: 12px;
    box-shadow: var(--shadow-lg); transform: translateY(-12px); opacity: 0; pointer-events: none;
    transition: var(--t);
  }
  .nav-links.open { transform: none; opacity: 1; pointer-events: auto; }
  .nav-links a { padding: 12px 14px; }
  .nav-burger { display: flex; }
  .section { padding: 70px 0; }
  .skills-grid { grid-template-columns: 1fr; gap: 18px; }
}

@media (max-width: 560px) {
  .project-grid, .edu-grid, .contact-grid { grid-template-columns: 1fr; }
  .hero-text h1 { font-size: 2.3rem; }
  .about-info { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; text-align: center; }
}

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