/* ===== Nour Salepan — Portfolio | Neon Theme (Light + Dark) ===== */

:root {
  --mono: "JetBrains Mono", "Fira Code", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --radius: 12px;
  --max-width: 1040px;

  /* Dark theme (default) */
  --bg: #07070d;
  --bg-alt: #0b0b16;
  --surface: #10101c;
  --surface-2: #14141f;
  --border: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text: #e9e9f4;
  --text-dim: #9d9db4;
  --text-faint: #62627a;

  --accent: #00f0ff;      /* cyan */
  --accent-2: #ff3df5;    /* magenta */
  --accent-3: #7c5cff;    /* violet */
  --accent-4: #39ff9d;    /* green */

  --glow-accent: 0 0 20px rgba(0, 240, 255, 0.35);
  --glow-accent-2: 0 0 20px rgba(255, 61, 245, 0.3);
  --glow-soft: 0 0 40px rgba(0, 240, 255, 0.12);

  --card-bg: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01));
}

html[data-theme="light"] {
  --bg: #f3f4fb;
  --bg-alt: #ffffff;
  --surface: #ffffff;
  --surface-2: #f8f8ff;
  --border: rgba(20, 20, 40, 0.1);
  --border-strong: rgba(20, 20, 40, 0.18);
  --text: #14141f;
  --text-dim: #4c4d63;
  --text-faint: #83849c;

  --accent: #0891b2;
  --accent-2: #c026d3;
  --accent-3: #6d28d9;
  --accent-4: #059669;

  --glow-accent: 0 0 20px rgba(8, 145, 178, 0.18);
  --glow-accent-2: 0 0 20px rgba(192, 38, 211, 0.15);
  --glow-soft: 0 0 40px rgba(8, 145, 178, 0.08);

  --card-bg: linear-gradient(180deg, rgba(20,20,40,0.02), rgba(20,20,40,0.005));
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  background-image:
    radial-gradient(circle at 12% -5%, rgba(0, 240, 255, 0.10) 0%, transparent 40%),
    radial-gradient(circle at 88% 10%, rgba(255, 61, 245, 0.08) 0%, transparent 38%),
    radial-gradient(circle at 50% 100%, rgba(124, 92, 255, 0.07) 0%, transparent 45%);
  background-attachment: fixed;
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color 0.3s ease, color 0.3s ease;
}

a { color: inherit; text-decoration: none; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}

::selection { background: var(--accent); color: #06060c; }

/* ===== Header / Nav ===== */
header {
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: blur(14px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo {
  font-family: var(--mono);
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}

.logo .prompt {
  color: var(--accent);
  text-shadow: 0 0 12px var(--accent);
}

nav { display: flex; align-items: center; gap: 18px; }

nav ul {
  list-style: none;
  display: flex;
  gap: 26px;
  font-family: var(--mono);
  font-size: 0.85rem;
}

nav a {
  color: var(--text-dim);
  transition: color 0.15s ease;
  position: relative;
  padding: 4px 0;
}

nav a:hover { color: var(--text); }

nav a.active { color: var(--accent); text-shadow: 0 0 10px var(--accent); }

nav a.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -6px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  box-shadow: 0 0 8px var(--accent);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  padding: 6px 10px;
  font-family: var(--mono);
  cursor: pointer;
}

/* Theme toggle switch */
.theme-toggle {
  position: relative;
  width: 52px;
  height: 28px;
  border-radius: 20px;
  border: 1px solid var(--border-strong);
  background: var(--surface-2);
  cursor: pointer;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  padding: 3px;
  transition: box-shadow 0.2s ease;
}

.theme-toggle:hover { box-shadow: var(--glow-accent); }

.theme-toggle .knob {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-3));
  box-shadow: 0 0 10px var(--accent);
  transition: transform 0.25s cubic-bezier(.4,0,.2,1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
}

html[data-theme="light"] .theme-toggle .knob { transform: translateX(24px); }

/* ===== Main / sections ===== */
main { flex: 1; }

section {
  padding: 64px 0;
  border-bottom: 1px solid var(--border);
}

section:last-of-type { border-bottom: none; }

.eyebrow {
  font-family: var(--mono);
  color: var(--accent);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  text-shadow: 0 0 12px color-mix(in srgb, var(--accent) 50%, transparent);
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--accent);
  box-shadow: 0 0 6px var(--accent);
}

h1, h2, h3 {
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
}

h1 { font-size: 2.6rem; line-height: 1.12; margin-bottom: 18px; }
h2 { font-size: 1.7rem; margin-bottom: 28px; }
h3 { font-size: 1.1rem; margin-bottom: 8px; }

p { color: var(--text-dim); }

.lead {
  font-size: 1.12rem;
  color: var(--text-dim);
  max-width: 640px;
}

.gradient-text {
  background: linear-gradient(90deg, var(--accent), var(--accent-3) 45%, var(--accent-2));
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: gradientShift 6s ease-in-out infinite;
}

@keyframes gradientShift {
  0%, 100% { background-position: 0% center; }
  50% { background-position: 100% center; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in { animation: fadeInUp 0.6s ease both; }

@keyframes floatY {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-8px); }
}

@keyframes pulseGlow {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

/* ===== Hero ===== */
.hero {
  padding: 84px 0 60px;
  position: relative;
}

.hero .tag {
  font-family: var(--mono);
  color: var(--accent);
  font-size: 0.95rem;
  margin-bottom: 16px;
}

.hero .location {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--text-faint);
  margin-top: 22px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.dot-live {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-4);
  box-shadow: 0 0 8px var(--accent-4);
  animation: pulseGlow 2s ease-in-out infinite;
}

.btn-row {
  display: flex;
  gap: 14px;
  margin-top: 32px;
  flex-wrap: wrap;
}

.btn {
  font-family: var(--mono);
  font-size: 0.88rem;
  padding: 12px 22px;
  border-radius: var(--radius);
  border: 1px solid var(--border-strong);
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-3));
  color: #050508;
  border-color: transparent;
  font-weight: 700;
  box-shadow: 0 0 0 rgba(0,240,255,0);
}

.btn-primary:hover {
  box-shadow: 0 0 26px color-mix(in srgb, var(--accent) 55%, transparent);
  transform: translateY(-2px);
}

.btn-outline { color: var(--text); }

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: var(--glow-accent);
  transform: translateY(-2px);
}

/* Stat strip */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 52px;
}

.stat-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 18px;
  text-align: left;
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.stat-card:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
  box-shadow: var(--glow-soft);
}

.stat-num {
  font-family: var(--mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
  text-shadow: 0 0 16px color-mix(in srgb, var(--accent) 45%, transparent);
}

.stat-label {
  font-size: 0.78rem;
  color: var(--text-faint);
  margin-top: 4px;
  font-family: var(--mono);
}

/* ===== Cards / grids ===== */
.grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
  position: relative;
}

.card:hover {
  border-color: color-mix(in srgb, var(--accent) 50%, var(--border));
  transform: translateY(-4px);
  box-shadow: var(--glow-soft);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 10px;
  gap: 10px;
}

.card .status {
  font-family: var(--mono);
  font-size: 0.72rem;
  padding: 3px 10px;
  border-radius: 20px;
  background: color-mix(in srgb, var(--accent-4) 15%, transparent);
  color: var(--accent-4);
  border: 1px solid color-mix(in srgb, var(--accent-4) 35%, transparent);
  white-space: nowrap;
}

.card .status.ongoing {
  background: color-mix(in srgb, var(--accent-3) 15%, transparent);
  color: var(--accent-3);
  border-color: color-mix(in srgb, var(--accent-3) 35%, transparent);
}

.card p { font-size: 0.92rem; margin-bottom: 14px; }

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.tag-chip {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--accent-3);
  background: color-mix(in srgb, var(--accent-3) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent-3) 28%, transparent);
  padding: 3px 9px;
  border-radius: 5px;
  transition: box-shadow 0.15s ease;
}

.tag-chip:hover { box-shadow: 0 0 10px color-mix(in srgb, var(--accent-3) 45%, transparent); }

.card-links { display: flex; gap: 16px; flex-wrap: wrap; }

.card-links a {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--text);
  border-bottom: 1px solid var(--text-faint);
  padding-bottom: 1px;
  transition: color 0.15s ease, border-color 0.15s ease, text-shadow 0.15s ease;
}

.card-links a:hover {
  color: var(--accent);
  border-color: var(--accent);
  text-shadow: 0 0 10px color-mix(in srgb, var(--accent) 60%, transparent);
}

/* ===== Case study / project detail ===== */
.case-study {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 36px;
  margin-bottom: 32px;
  position: relative;
  overflow: hidden;
}

.case-study::before {
  content: "";
  position: absolute;
  top: -60%;
  right: -20%;
  width: 60%;
  height: 220%;
  background: radial-gradient(circle, color-mix(in srgb, var(--accent) 12%, transparent), transparent 70%);
  pointer-events: none;
}

.case-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}

.case-header h3 { font-size: 1.35rem; margin-bottom: 4px; }

.case-meta {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--text-faint);
  margin-bottom: 20px;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin: 24px 0;
}

.metric-box {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 14px;
  text-align: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.metric-box:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: var(--glow-soft);
}

.metric-num {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--accent-2);
  text-shadow: 0 0 14px color-mix(in srgb, var(--accent-2) 45%, transparent);
  display: block;
}

.metric-label {
  font-size: 0.72rem;
  color: var(--text-faint);
  margin-top: 4px;
}

.case-section-title {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 22px 0 10px;
}

.finding-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.finding-list li {
  padding-left: 22px;
  position: relative;
  font-size: 0.93rem;
  color: var(--text-dim);
}

.finding-list li::before {
  content: "▹";
  position: absolute;
  left: 0;
  color: var(--accent);
  text-shadow: 0 0 8px var(--accent);
}

.finding-list strong { color: var(--text); }

.callout {
  background: color-mix(in srgb, var(--accent-2) 8%, var(--surface-2));
  border: 1px solid color-mix(in srgb, var(--accent-2) 30%, transparent);
  border-radius: 10px;
  padding: 16px 18px;
  margin: 18px 0;
  font-size: 0.9rem;
}

.callout strong { color: var(--accent-2); }

/* ===== Skills page ===== */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 20px;
}

.tool-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 22px;
  transition: transform 0.25s cubic-bezier(.4,0,.2,1), border-color 0.25s ease, box-shadow 0.25s ease;
  position: relative;
  overflow: hidden;
}

.tool-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, var(--accent), transparent 40%, var(--accent-2));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.25s ease;
  pointer-events: none;
}

.tool-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--glow-soft);
}

.tool-card:hover::after { opacity: 1; }

.tool-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 16px;
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  color: var(--accent);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.tool-card:hover .tool-icon {
  transform: rotate(-6deg) scale(1.08);
  box-shadow: 0 0 20px color-mix(in srgb, var(--accent) 50%, transparent);
}

.tool-card h3 { font-size: 1.05rem; }

.tool-card p { font-size: 0.86rem; margin-bottom: 14px; }

.proficiency {
  height: 5px;
  border-radius: 4px;
  background: var(--border);
  overflow: hidden;
  margin-top: 12px;
}

.proficiency-fill {
  height: 100%;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--accent), var(--accent-3));
  box-shadow: 0 0 10px color-mix(in srgb, var(--accent) 50%, transparent);
  width: 0%;
  transition: width 1.1s cubic-bezier(.4,0,.2,1);
}

.proficiency-label {
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--text-faint);
  margin-top: 6px;
}

.skill-group { margin-bottom: 36px; }

.skill-group h3 {
  font-family: var(--mono);
  color: var(--accent);
  font-size: 0.95rem;
  margin-bottom: 16px;
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.pill {
  font-family: var(--mono);
  font-size: 0.85rem;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 9px 15px;
  border-radius: 8px;
  color: var(--text);
  transition: all 0.2s ease;
  cursor: default;
}

.pill:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: var(--glow-accent);
  transform: translateY(-2px);
}

/* ===== Experience / timeline ===== */
.timeline-item {
  padding: 26px 0;
  border-bottom: 1px solid var(--border);
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: 24px;
  position: relative;
}

.timeline-item:last-child { border-bottom: none; }

.timeline-date {
  font-family: var(--mono);
  color: var(--text-faint);
  font-size: 0.8rem;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.timeline-date::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  margin-top: 5px;
  flex-shrink: 0;
}

.timeline-role { font-weight: 700; color: var(--text); margin-bottom: 4px; font-size: 1.02rem; }

.timeline-org { color: var(--accent); font-size: 0.9rem; margin-bottom: 10px; font-family: var(--mono); }

.timeline-item ul {
  margin-top: 8px;
  padding-left: 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.timeline-item ul li { font-size: 0.9rem; color: var(--text-dim); }

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 10px;
}

.badge {
  font-family: var(--mono);
  font-size: 0.75rem;
  padding: 5px 12px;
  border-radius: 20px;
  border: 1px solid color-mix(in srgb, var(--accent-4) 35%, transparent);
  color: var(--accent-4);
  background: color-mix(in srgb, var(--accent-4) 10%, transparent);
}

.lang-row { display: flex; gap: 28px; margin-top: 8px; flex-wrap: wrap; }

.lang-item { display: flex; flex-direction: column; gap: 6px; min-width: 160px; }

.lang-name { font-family: var(--mono); font-size: 0.88rem; color: var(--text); }

.lang-level { font-size: 0.76rem; color: var(--text-faint); }

.placeholder-note {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--text-faint);
  background: var(--surface);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-top: 8px;
}

/* ===== Blog ===== */
.blog-item {
  padding: 22px 0;
  border-bottom: 1px solid var(--border);
}

.blog-item:last-child { border-bottom: none; }

.blog-date {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--text-faint);
  margin-bottom: 6px;
}

/* ===== Contact ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-top: 30px;
}

.contact-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  display: flex;
  align-items: center;
  gap: 14px;
  transition: all 0.2s ease;
}

.contact-card:hover {
  border-color: color-mix(in srgb, var(--accent) 50%, var(--border));
  box-shadow: var(--glow-soft);
  transform: translateY(-3px);
}

.contact-icon {
  font-family: var(--mono);
  color: var(--accent);
  font-size: 1.2rem;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
  flex-shrink: 0;
}

.contact-label {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--text-faint);
  margin-bottom: 3px;
}

.contact-value { color: var(--text); font-size: 0.94rem; }

.availability-banner {
  margin-top: 36px;
  background: linear-gradient(120deg, color-mix(in srgb, var(--accent) 10%, transparent), color-mix(in srgb, var(--accent-2) 8%, transparent));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--mono);
  font-size: 0.88rem;
}

/* ===== Footer ===== */
footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
}

.footer-wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--text-faint);
}

.footer-wrap a { color: var(--text-dim); }
.footer-wrap a:hover { color: var(--accent); }

/* ===== Responsive ===== */
@media (max-width: 820px) {
  .tool-grid { grid-template-columns: repeat(2, 1fr); }
  .metrics-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
  .grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .tool-grid { grid-template-columns: 1fr; }
  .timeline-item { grid-template-columns: 1fr; gap: 6px; }
  h1 { font-size: 1.9rem; }
  .case-study { padding: 24px 18px; }
  nav ul {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-alt);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 16px 24px;
    display: none;
    gap: 16px;
  }
  nav ul.open { display: flex; }
  .nav-toggle { display: block; }
  .footer-wrap { flex-direction: column; gap: 10px; text-align: center; }
}