/* =============================================
   SENA ORUCU — Portfolio Styles (Bold Redesign)
   ============================================= */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;0,600;1,300;1,400;1,500&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;1,9..40,300;1,9..40,400&display=swap');

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

:root {
  --bg:        #ffffff;
  --text:      #111111;
  --secondary: #666666;
  --surface:   #f4f4f4;
  --border:    #e8e8e8;
  --accent:    #5239ED;
  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-body:    'DM Sans', -apple-system, sans-serif;
  --nav-h: 72px;
  --max-w: 1120px;
  --ease:  cubic-bezier(0.16, 1, 0.3, 1);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  opacity: 0;
  transition: opacity 0.5s var(--ease);
}

body.loaded { opacity: 1; }

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

/* ── Layout ── */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2.5rem;
}

/* ── NAV ── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: rgba(255,255,255,0.94);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
  transition: box-shadow 0.3s ease;
}

nav.scrolled { box-shadow: 0 2px 24px rgba(0,0,0,0.05); }

.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2.5rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--text);
  transition: opacity 0.2s;
}

.nav-logo:hover { opacity: 0.55; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 400;
  color: var(--secondary);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: color 0.2s;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -3px; left: 0;
  width: 0; height: 1px;
  background: var(--accent);
  transition: width 0.25s var(--ease);
}

.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }
.nav-links a.active { color: var(--text); }

.nav-links .cv-link {
  padding: 0.45rem 1.1rem;
  border: 1px solid var(--border);
  border-radius: 100px;
  color: var(--text);
  font-weight: 500;
  letter-spacing: 0.04em;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}

.nav-links .cv-link::after { display: none; }
.nav-links .cv-link:hover {
  background: var(--text);
  color: #fff;
  border-color: var(--text);
}

/* ── Hamburger ── */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 6px;
  background: none;
  border: none;
}

.hamburger span {
  display: block;
  width: 22px; height: 1.5px;
  background: var(--text);
  transition: transform 0.3s var(--ease), opacity 0.3s;
  transform-origin: center;
}

.hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.mobile-menu {
  display: none;
  position: fixed;
  top: var(--nav-h); left: 0; right: 0;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 1.5rem 2.5rem 2rem;
  z-index: 99;
  flex-direction: column;
  gap: 1.5rem;
  transform: translateY(-10px);
  opacity: 0;
  pointer-events: none;
  transition: transform 0.3s var(--ease), opacity 0.3s;
}

.mobile-menu.open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: all;
}

.mobile-menu a {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--secondary);
  transition: color 0.2s;
}

.mobile-menu a:hover,
.mobile-menu a.active { color: var(--text); }

/* ── FOOTER ── */
footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  margin-top: 6rem;
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-name {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 400;
  color: var(--secondary);
}

.footer-links { display: flex; gap: 1.5rem; }
.footer-links a {
  font-size: 0.8125rem;
  color: var(--secondary);
  letter-spacing: 0.04em;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--text); }

/* ── Main ── */
main { padding-top: var(--nav-h); }
section { padding: 5rem 0; }

/* ── Typography ── */
.display-heading {
  font-family: var(--font-display);
  font-size: clamp(3rem, 6.5vw, 5.5rem);
  font-weight: 300;
  letter-spacing: -0.01em;
  line-height: 1.05;
}

.page-heading {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 300;
  letter-spacing: -0.01em;
  line-height: 1.1;
}

.section-label {
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--secondary);
  margin-bottom: 0.75rem;
}

.accent-line {
  display: inline-block;
  width: 32px;
  height: 1.5px;
  background: var(--accent);
  vertical-align: middle;
  margin-right: 0.75rem;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  font-size: 0.8125rem;
  font-weight: 500;
  font-family: var(--font-body);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: 100px;
  cursor: pointer;
  transition: transform 0.25s var(--ease), box-shadow 0.25s, background 0.2s, color 0.2s;
}

.btn-primary {
  background: var(--text);
  color: #fff;
  border: 1px solid var(--text);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(0,0,0,0.18);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-outline:hover {
  background: var(--surface);
  transform: translateY(-2px);
}

/* ── PROJECT CARDS ── */
.project-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.55s var(--ease), transform 0.55s var(--ease),
              box-shadow 0.3s var(--ease);
}

.project-card.visible { opacity: 1; transform: translateY(0); }
.project-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 56px rgba(0,0,0,0.09);
}

.card-image {
  width: 100%;
  aspect-ratio: 2 / 1;
  background: var(--surface);
  position: relative;
  overflow: hidden;
}

.card-image-inner {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #f0f0f0 0%, #e8e8e8 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.45s var(--ease);
}

.project-card:hover .card-image-inner { transform: scale(1.04); }

.card-image-inner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  display: block;
  transition: transform 0.45s var(--ease);
}

.card-body { padding: 1.5rem 1.75rem 1.75rem; }

.card-company {
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 0.2rem 0.7rem;
  display: inline-block;
  margin-bottom: 0.65rem;
}

.card-tags {
  font-size: 0.75rem;
  color: var(--secondary);
  letter-spacing: 0.03em;
  margin-bottom: 0.5rem;
}

.card-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin-bottom: 0.6rem;
  line-height: 1.25;
}

.card-desc {
  font-size: 0.875rem;
  color: var(--secondary);
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

.card-link {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: gap 0.2s, color 0.2s;
}

.card-link:hover { gap: 0.75rem; color: var(--accent); }

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

.fade-up { animation: fadeUp 0.75s var(--ease) both; }
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.45s; }
.delay-5 { animation-delay: 0.6s; }

/* ── Responsive ── */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .mobile-menu { display: flex; }
  section { padding: 3.5rem 0; }
  footer { margin-top: 4rem; }
  .footer-inner { flex-direction: column; gap: 1rem; text-align: center; }
}

@media (max-width: 480px) {
  .container { padding: 0 1.5rem; }
  .nav-inner { padding: 0 1.5rem; }
  .footer-inner { padding: 0 1.5rem; }
}