/* ===================================================
   Salih Demirci Portfolio — style.css
   =================================================== */

/* --- Değişkenler --- */
:root {
  /* Renkler: soğuk açık zemin, petrol yeşili vurgu */
  --color-bg:        #f4f6f8;
  --color-surface:   #ffffff;
  --color-alt:       #eaeef2;
  --color-ink:       #172230;
  --color-text:      #2a3644;
  --color-muted:     #5a6675;
  --color-line:      #dbe1e7;
  --color-accent:    #0d6e6e;
  --color-accent-dk: #0a5656;
  --color-accent-lt: #e1efee;
  --color-signal:    #c98a1e;
  --color-deep:      #12212c;
  --color-deep-2:    #1a2e3b;
  --color-deep-line: #2a4050;
  --color-deep-text: #c4d0d9;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;

  --shadow-card: 0 1px 2px rgba(18, 33, 44, 0.06), 0 8px 24px rgba(18, 33, 44, 0.06);
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);

  --font-body: 'IBM Plex Sans', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-heading: 'Sora', 'Segoe UI', system-ui, sans-serif;
}

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

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

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  font-size: 1rem;
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a  { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.container {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-padding { padding: 96px 0; }

/* --- Butonlar --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 24px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  transition: background-color var(--transition), border-color var(--transition), color var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
}
.btn-primary:hover { background: var(--color-accent-dk); }

.btn-outline {
  color: var(--color-ink);
  border: 1.5px solid var(--color-line);
  background: var(--color-surface);
}
.btn-outline:hover { border-color: var(--color-accent); color: var(--color-accent); }

/* --- Bölüm başlıkları --- */
.section-header {
  max-width: 640px;
  margin-bottom: 56px;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.9rem, 3.4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--color-ink);
  margin-bottom: 14px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--color-muted);
}

/* ============================================================
   NAVBAR
   ============================================================ */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  transition: background-color var(--transition), box-shadow var(--transition);
}

#navbar.scrolled {
  background: rgba(244, 246, 248, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 var(--color-line);
}

.nav-container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-logo { margin-right: auto; }

.logo-text {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-ink);
  letter-spacing: -0.01em;
}
.logo-accent { color: var(--color-accent); }

.nav-links { display: flex; align-items: center; gap: 4px; }

.nav-link {
  display: block;
  padding: 8px 14px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--color-muted);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background-color var(--transition);
}
.nav-link:hover { color: var(--color-ink); }
.nav-link.active { color: var(--color-accent); background: var(--color-accent-lt); }

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  gap: 5px;
  border-radius: var(--radius-sm);
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-ink);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  min-height: 92vh;
  display: flex;
  align-items: center;
  padding: 120px 0 72px;
  border-bottom: 1px solid var(--color-line);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 64px;
}

.hero-content { display: flex; flex-direction: column; align-items: flex-start; }

.hero-now {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-accent-dk);
  background: var(--color-accent-lt);
  padding: 7px 14px;
  border-radius: 999px;
  margin-bottom: 28px;
  transition: background-color var(--transition);
}
.hero-now:hover { background: #d2e7e5; }

.now-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--color-signal);
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.8rem, 6.4vw, 5rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.035em;
  color: var(--color-ink);
}

.hero-subtitle {
  font-family: var(--font-heading);
  font-size: clamp(1.15rem, 2vw, 1.45rem);
  font-weight: 500;
  color: var(--color-accent);
  margin-top: 14px;
}

.hero-desc {
  font-size: 1.08rem;
  color: var(--color-muted);
  max-width: 34em;
  margin-top: 22px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 32px;
}

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--color-line);
}

.stat-item { display: flex; flex-direction: column-reverse; }
.stat-number {
  font-family: var(--font-heading);
  font-size: 1.7rem;
  font-weight: 700;
  color: var(--color-ink);
  line-height: 1.1;
}
.stat-label { font-size: 0.85rem; color: var(--color-muted); margin-top: 4px; }

.hero-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.hero-image-frame {
  position: relative;
  width: min(380px, 100%);
  aspect-ratio: 1;
  border-radius: var(--radius-lg);
  background: var(--color-deep);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.hero-image-frame::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  box-shadow: inset 0 0 0 1px rgba(18, 33, 44, 0.06);
  pointer-events: none;
}

.hero-avatar {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-tools {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}
.hero-tools li {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--color-muted);
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  padding: 5px 12px;
  border-radius: 999px;
}

/* ============================================================
   HAKKIMDA
   ============================================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 72px;
  align-items: start;
}

.about-text { display: flex; flex-direction: column; gap: 18px; }
.about-text .section-title { margin-bottom: 6px; }
.about-text p { color: var(--color-muted); max-width: 36em; }
.about-text .lead { font-size: 1.15rem; color: var(--color-text); }

.skills-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }

.skill-tag {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  color: var(--color-text);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 5px 12px;
  border-radius: var(--radius-sm);
}

.about-visual {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: 32px;
  position: sticky;
  top: 96px;
}

.approach-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 20px;
}

.exp-items { display: flex; flex-direction: column; }
.exp-item { padding: 16px 0; border-top: 1px solid var(--color-line); }
.exp-item:first-child { border-top: none; padding-top: 0; }
.exp-item:last-child { padding-bottom: 0; }
.exp-item strong { display: block; font-weight: 600; color: var(--color-ink); margin-bottom: 4px; }
.exp-item p { color: var(--color-muted); font-size: 0.92rem; line-height: 1.55; }

/* ============================================================
   YETKİNLİKLER (koyu bölüm)
   ============================================================ */
.dark-section {
  background: var(--color-deep);
  color: var(--color-deep-text);
}
.dark-section .section-title { color: #ffffff; }
.dark-section .section-desc { color: #93a6b4; }

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--color-deep-line);
  border-left: 1px solid var(--color-deep-line);
}

.skill-block {
  padding: 32px 28px 36px;
  border-right: 1px solid var(--color-deep-line);
  border-bottom: 1px solid var(--color-deep-line);
  transition: background-color var(--transition);
}
.skill-block:hover { background: var(--color-deep-2); }

.skill-icon { width: 28px; height: 28px; color: #5fc2b6; margin-bottom: 20px; }

.skill-block h3 {
  font-family: var(--font-heading);
  font-size: 1.08rem;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 10px;
}

.skill-block > p { font-size: 0.93rem; color: #9fb1be; margin-bottom: 18px; }

.skill-points { display: flex; flex-direction: column; gap: 6px; }
.skill-points li {
  position: relative;
  padding-left: 16px;
  font-size: 0.88rem;
  color: var(--color-deep-text);
}
.skill-points li::before {
  content: '';
  position: absolute;
  left: 0; top: 0.65em;
  width: 6px; height: 2px;
  background: #5fc2b6;
}

/* ============================================================
   PROJELER
   ============================================================ */
.group-title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-muted);
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 28px;
}
.group-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-line);
}

/* Öne çıkan yeni projeler */
.feature-list {
  display: flex;
  flex-direction: column;
  gap: 32px;
  margin-bottom: 88px;
}

.project-feature {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.project-feature:nth-child(even) { grid-template-columns: 1fr 1.15fr; }
.project-feature:nth-child(even) .feature-image { order: 2; }

.feature-image {
  display: block;
  background: #e4eef6;
  overflow: hidden;
}
.feature-image-dark { background: #1b2a35; }
.feature-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.feature-image:hover img { transform: scale(1.02); }

.feature-info {
  padding: 44px 44px 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.feature-info h3 {
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 2.6vw, 2.1rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-ink);
  margin-bottom: 14px;
}

.feature-info > p { color: var(--color-muted); margin-bottom: 16px; max-width: 36em; }
.feature-info .feature-meta {
  font-size: 0.88rem;
  color: var(--color-muted);
  padding-left: 12px;
  border-left: 2px solid var(--color-line);
  margin-bottom: 20px;
}

/* Önceki çalışmalar */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.project-card {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.project-card:hover { border-color: #c3ccd5; box-shadow: var(--shadow-card); }

.project-image {
  display: block;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border-bottom: 1px solid var(--color-line);
  background: var(--color-alt);
}
.project-image img { width: 100%; height: 100%; object-fit: cover; }

.project-info {
  padding: 20px 20px 22px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.project-info h3 {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.project-info > p {
  color: var(--color-muted);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 16px;
  flex: 1;
}

.project-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px; }

.tag {
  background: var(--color-alt);
  color: var(--color-muted);
  font-size: 0.75rem;
  font-weight: 500;
  padding: 3px 9px;
  border-radius: 4px;
}
.tag-status { background: #fbf0dc; color: #8a5c0e; }

.project-links { display: flex; flex-wrap: wrap; gap: 6px 18px; }

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-accent);
  max-width: 100%;
  overflow-wrap: anywhere;
}
.project-link svg { width: 14px; height: 14px; transition: transform var(--transition); }
.project-link:hover { color: var(--color-accent-dk); text-decoration: underline; text-underline-offset: 3px; }
.project-link:hover svg { transform: translate(2px, -2px); }

/* ============================================================
   İLETİŞİM
   ============================================================ */
.contact-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.contact-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 22px;
  background: var(--color-deep-2);
  border: 1px solid var(--color-deep-line);
  border-radius: var(--radius-md);
  transition: border-color var(--transition), background-color var(--transition);
}
.contact-card:hover { border-color: #5fc2b6; background: #1e3443; }

.contact-icon {
  width: 46px; height: 46px;
  border-radius: var(--radius-sm);
  background: rgba(95, 194, 182, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.contact-icon svg { width: 22px; height: 22px; color: #5fc2b6; }

.contact-card-body { min-width: 0; }
.contact-card-body strong {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: #93a6b4;
  margin-bottom: 2px;
}
.contact-card-body span {
  display: block;
  font-size: 1rem;
  font-weight: 600;
  color: #ffffff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--color-deep);
  border-top: 1px solid var(--color-deep-line);
  padding: 24px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.designer-credit { font-size: 0.88rem; color: #93a6b4; }
.footer-link { font-size: 0.88rem; color: #93a6b4; }
.footer-link:hover { color: #ffffff; }

/* Başa dön */
.back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 44px; height: 44px;
  background: var(--color-ink);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 18px rgba(18, 33, 44, 0.25);
  transition: background-color var(--transition);
  z-index: 900;
}
.back-to-top[hidden] { display: none; }
.back-to-top:hover { background: var(--color-accent); }
.back-to-top svg { width: 20px; height: 20px; }

/* ============================================================
   ANİMASYONLAR
   ============================================================ */
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%       { transform: translateX(-8px); }
  40%       { transform: translateX(8px); }
  60%       { transform: translateX(-5px); }
  80%       { transform: translateX(5px); }
}

@keyframes spin {
  to { stroke-dashoffset: 0; transform: rotate(360deg); }
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.reveal.visible { opacity: 1; transform: none; }

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

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual { align-items: flex-start; flex-direction: row; flex-wrap: wrap; }
  .hero-image-frame { width: 240px; }
  .hero-tools { justify-content: flex-start; align-self: flex-end; }
  .skills-grid { grid-template-columns: repeat(2, 1fr); }
  .portfolio-grid { grid-template-columns: repeat(2, 1fr); }
  .project-feature,
  .project-feature:nth-child(even) { grid-template-columns: 1fr; }
  .project-feature:nth-child(even) .feature-image { order: 0; }
  .feature-image { aspect-ratio: 16 / 10; }
  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .about-visual { position: static; }
}

@media (max-width: 768px) {
  .section-padding { padding: 72px 0; }

  .hamburger { display: flex; }
  .nav-links {
    position: fixed;
    top: 72px; left: 0; right: 0;
    background: var(--color-bg);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 0 24px;
    border-bottom: 1px solid var(--color-line);
    box-shadow: 0 12px 24px rgba(18, 33, 44, 0.08);
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition), transform var(--transition);
    z-index: 999;
  }
  .nav-links.open { transform: none; opacity: 1; pointer-events: all; }
  .nav-link { padding: 14px 24px; border-radius: 0; font-size: 1rem; }

  .hero { padding-top: 104px; min-height: auto; }
  .hero-stats { gap: 28px; }
  .stat-number { font-size: 1.45rem; }

  .feature-info { padding: 28px 24px 30px; }
  .contact-cards { grid-template-columns: 1fr; }
  .back-to-top { bottom: 20px; right: 20px; }
}

@media (max-width: 560px) {
  .skills-grid { grid-template-columns: 1fr; }
  .portfolio-grid { grid-template-columns: 1fr; }
  .hero-actions { width: 100%; }
  .hero-actions .btn { flex: 1; }
  .hero-stats { flex-wrap: wrap; gap: 20px 28px; }
  .hero-image-frame { width: 180px; }
  .footer-inner { flex-direction: column; }
}