/* ============================================================
   PORTFOLIO — Nand Taeymans
   Design: Deep Navy · Steel Blue · Syne + Outfit
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;500;600;700;800&family=Outfit:wght@300;400;500;600&display=swap');

/* ── Variables ─────────────────────────────────────────────── */
:root {
  --bg-primary:    #07101e;
  --bg-secondary:  #0b1829;
  --bg-card:       #0d1f35;
  --bg-card-hover: #102540;
  --accent:        #4a8fd4;
  --accent-light:  #6aaae2;
  --accent-dim:    rgba(74, 143, 212, 0.12);
  --accent-glow:   rgba(74, 143, 212, 0.25);
  --text:          #ddeaff;
  --text-muted:    #6b87ab;
  --text-faint:    #3a567a;
  --border:        rgba(74, 143, 212, 0.18);
  --border-subtle: rgba(74, 143, 212, 0.08);
  --radius:        12px;
  --radius-lg:     20px;
  --font-display:  'Syne', sans-serif;
  --font-body:     'Outfit', sans-serif;
  --transition:    0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow:        0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-accent: 0 8px 32px rgba(74, 143, 212, 0.15);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text);
  font-size: 1rem;
  line-height: 1.7;
  overflow-x: hidden;
}

::selection { background: var(--accent-dim); color: var(--accent-light); }

a { color: var(--accent-light); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--text); }

img { max-width: 100%; }

/* ── Typography ───────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  color: var(--text);
  line-height: 1.2;
  font-weight: 700;
}

.section-label {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-block;
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 800;
  color: var(--text);
  margin-bottom: 1rem;
}

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

/* ── Scrollbar ────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--text-faint); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* ── Navbar ───────────────────────────────────────────────── */
#mainNav {
  background: transparent;
  padding: 1.4rem 0;
  transition: background var(--transition), padding var(--transition), backdrop-filter var(--transition);
  border-bottom: 1px solid transparent;
  z-index: 1000;
}

#mainNav.scrolled {
  background: rgba(7, 16, 30, 0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.navbar-brand {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text) !important;
  letter-spacing: -0.02em;
}

.nav-link {
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted) !important;
  padding: 0.4rem 1rem !important;
  transition: color var(--transition);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 1rem;
  right: 1rem;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transition: transform var(--transition);
}

.nav-link:hover, .nav-link.active {
  color: var(--text) !important;
}

.nav-link:hover::after, .nav-link.active::after {
  transform: scaleX(1);
}

.nav-link.nav-cta {
  background: var(--accent-dim);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--accent-light) !important;
  margin-left: 0.5rem;
}

.nav-link.nav-cta:hover {
  background: var(--accent);
  color: #fff !important;
  border-color: var(--accent);
}

.nav-link.nav-cta::after { display: none; }

.navbar-toggler {
  border: 1px solid var(--border);
  padding: 0.3rem 0.6rem;
  border-radius: 6px;
}

.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(74, 143, 212, 0.9)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* ── Hero (Homepage) ──────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: var(--bg-primary);
  padding-top: 5rem;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(74, 143, 212, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(74, 143, 212, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 40%, transparent 100%);
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
}

.hero-orb-1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(74, 143, 212, 0.18), transparent 70%);
  top: -150px;
  right: -100px;
  animation: drift 10s ease-in-out infinite;
}

.hero-orb-2 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(20, 60, 120, 0.3), transparent 70%);
  bottom: -80px;
  left: -80px;
  animation: drift 8s ease-in-out infinite reverse;
}

@keyframes drift {
  0%, 100% { transform: translate(0, 0); }
  33%       { transform: translate(20px, -25px); }
  66%       { transform: translate(-15px, 15px); }
}

.hero-content { position: relative; z-index: 1; }

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--accent-dim);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 0.3rem 0.9rem;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--accent-light);
  margin-bottom: 1.5rem;
  animation: fadeUp 0.6s ease both;
}

.hero-tag .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s ease infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.7); }
}

.hero-name {
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  animation: fadeUp 0.6s 0.1s ease both;
}

.hero-name .line-2 {
  color: var(--accent);
  -webkit-text-stroke: 0;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--text-muted);
  max-width: 520px;
  margin: 1.2rem 0 2.2rem;
  font-weight: 300;
  animation: fadeUp 0.6s 0.2s ease both;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  animation: fadeUp 0.6s 0.3s ease both;
}

.hero-scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  color: var(--text-faint);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-family: var(--font-display);
  animation: fadeIn 1s 1s ease both;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scrollLine 2s ease infinite;
}

@keyframes scrollLine {
  0%   { transform: scaleY(0); transform-origin: top; opacity: 1; }
  50%  { transform: scaleY(1); transform-origin: top; opacity: 1; }
  51%  { transform: scaleY(1); transform-origin: bottom; opacity: 1; }
  100% { transform: scaleY(0); transform-origin: bottom; opacity: 0; }
}

/* ── Buttons ──────────────────────────────────────────────── */
.btn-primary-custom {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 0.75rem 1.8rem;
  border-radius: 8px;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn-primary-custom::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.12);
  opacity: 0;
  transition: opacity var(--transition);
}

.btn-primary-custom:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-accent);
  color: #fff;
}

.btn-primary-custom:hover::after { opacity: 1; }

.btn-outline-custom {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 0.75rem 1.8rem;
  border-radius: 8px;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
}

.btn-outline-custom:hover {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--text);
  transform: translateY(-2px);
}

/* ── Section Wrapper ──────────────────────────────────────── */
.section { padding: 6rem 0; }
.section-alt { background: var(--bg-secondary); }

.section-header { margin-bottom: 3.5rem; }

/* ── About Teaser (Homepage) ──────────────────────────────── */
.about-teaser-img {
  width: 100%;
  aspect-ratio: 1;
  max-width: 380px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
  position: relative;
  overflow: hidden;
}

.about-teaser-img::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top right, var(--accent-dim), transparent 70%);
}

.placeholder-initials {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 4rem;
  color: var(--accent);
  opacity: 0.6;
  position: relative;
  z-index: 1;
  letter-spacing: -0.05em;
}

.stat-row { display: flex; gap: 2rem; margin-top: 2rem; flex-wrap: wrap; }

.stat-item .stat-number {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent-light);
  line-height: 1;
}

.stat-item .stat-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 0.2rem;
}

/* ── Cards (Projects) ─────────────────────────────────────── */
.card-project {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.card-project:hover {
  border-color: var(--border);
  transform: translateY(-5px);
  box-shadow: var(--shadow-accent);
}

.card-project-header {
  height: 160px;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-project-icon {
  font-size: 2.5rem;
  z-index: 1;
  position: relative;
}

.card-project-bg {
  position: absolute;
  inset: 0;
  opacity: 0.15;
}

.card-project-body {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card-project-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text);
}

.card-project-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  flex: 1;
  margin-bottom: 1rem;
}

.tag-list { display: flex; gap: 0.4rem; flex-wrap: wrap; margin-bottom: 1.2rem; }

.tech-tag {
  background: var(--accent-dim);
  color: var(--accent-light);
  border: 1px solid rgba(74, 143, 212, 0.2);
  border-radius: 4px;
  padding: 0.15rem 0.6rem;
  font-size: 0.72rem;
  font-weight: 600;
  font-family: var(--font-display);
  letter-spacing: 0.04em;
}

.card-project-links { display: flex; gap: 0.75rem; }

.card-link {
  font-size: 0.8rem;
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--text-muted);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  transition: color var(--transition);
}

.card-link:hover { color: var(--accent-light); }

/* ── Skills ───────────────────────────────────────────────── */
.skill-bar-wrap { margin-bottom: 1.4rem; }

.skill-bar-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 0.4rem;
  font-family: var(--font-display);
}

.skill-bar-track {
  height: 5px;
  background: var(--bg-card);
  border-radius: 3px;
  overflow: hidden;
}

.skill-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-light));
  border-radius: 3px;
  width: 0;
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.skill-category-title {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.2rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

/* ── Timeline ─────────────────────────────────────────────── */
.timeline { position: relative; padding-left: 1.5rem; }

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(to bottom, var(--accent), transparent);
}

.timeline-item { position: relative; margin-bottom: 2.5rem; }

.timeline-item::before {
  content: '';
  position: absolute;
  left: -1.85rem;
  top: 5px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg-primary);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

.timeline-date {
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.3rem;
}

.timeline-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.2rem;
}

.timeline-sub {
  font-size: 0.83rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.timeline-body {
  font-size: 0.87rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ── Info Cards ───────────────────────────────────────────── */
.info-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 1.6rem;
  transition: border-color var(--transition);
}

.info-card:hover { border-color: var(--border); }

.info-card-icon {
  font-size: 1.6rem;
  margin-bottom: 1rem;
  display: block;
}

.info-card-title {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.3rem;
}

.info-card-text {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ── Contact Form ─────────────────────────────────────────── */
.contact-form-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
}

.form-group { margin-bottom: 1.3rem; }

.form-label {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  display: block;
  margin-bottom: 0.4rem;
}

.form-control-custom {
  width: 100%;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.92rem;
  padding: 0.75rem 1rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  appearance: none;
}

.form-control-custom::placeholder { color: var(--text-faint); }

.form-control-custom:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

textarea.form-control-custom { resize: vertical; min-height: 140px; }

/* ── Contact Info ─────────────────────────────────────────── */
.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.2rem;
  border-radius: var(--radius);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  margin-bottom: 1rem;
  transition: border-color var(--transition);
}

.contact-item:hover { border-color: var(--border); }

.contact-item-icon {
  font-size: 1.3rem;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.contact-item-label {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.2rem;
}

.contact-item-value {
  font-size: 0.9rem;
  color: var(--text);
}

/* ── Page Hero (inner pages) ──────────────────────────────── */
.page-hero {
  padding: 9rem 0 5rem;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(74, 143, 212, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(74, 143, 212, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}

.page-hero-tag {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.8rem;
}

.page-hero-title {
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 1rem;
}

.page-hero-sub {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 480px;
  font-weight: 300;
}

/* ── Internships Placeholder ──────────────────────────────── */
.placeholder-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 50vh;
  text-align: center;
  padding: 4rem 1rem;
}

.placeholder-icon {
  font-size: 4rem;
  margin-bottom: 1.5rem;
  opacity: 0.4;
}

.placeholder-title {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.75rem;
}

.placeholder-text {
  color: var(--text-muted);
  font-size: 0.95rem;
  max-width: 400px;
}

/* ── Divider ──────────────────────────────────────────────── */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
  margin: 0;
}

/* ── Footer ───────────────────────────────────────────────── */
footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  padding: 3.5rem 0 2rem;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 0.5rem;
}

.footer-tagline {
  font-size: 0.83rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.footer-link {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  text-decoration: none;
  transition: all var(--transition);
}

.footer-link:hover {
  background: var(--accent-dim);
  border-color: var(--border);
  color: var(--accent-light);
  transform: translateY(-2px);
}

.footer-hr {
  border: none;
  border-top: 1px solid var(--border-subtle);
  margin: 2rem 0 1.5rem;
}

.footer-copy {
  font-size: 0.78rem;
  color: var(--text-faint);
}

.footer-nav-link {
  font-size: 0.78rem;
  font-family: var(--font-display);
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--transition);
}

.footer-nav-link:hover { color: var(--accent-light); }

/* ── Animations ───────────────────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Toast ────────────────────────────────────────────────── */
.toast-custom {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--bg-card);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  padding: 1rem 1.5rem;
  color: var(--text);
  font-size: 0.88rem;
  font-family: var(--font-display);
  font-weight: 600;
  z-index: 9999;
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: var(--shadow-accent);
}

.toast-custom.show { transform: translateY(0); opacity: 1; }

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 768px) {
  .section { padding: 4rem 0; }
  .hero { padding-top: 6rem; }
  .hero-scroll-hint { display: none; }
  .stat-row { gap: 1.5rem; }
  .contact-form-wrap { padding: 1.5rem; }
  .footer-links { justify-content: flex-start; margin-top: 1.5rem; }
}

@media (max-width: 576px) {
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .btn-primary-custom, .btn-outline-custom { width: 100%; justify-content: center; }
}