/* =====================================================
   Dr. Tuna Cak - Modern Minimalist Static Site Styles
   ===================================================== */

:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f6f8fa;
  --color-text: #374151;
  --color-heading: #111827;
  --color-accent: #0f4c75;
  --color-accent-light: #3282b8;
  --color-border: #e5e7eb;
  --color-muted: #6b7280;
  --font-body: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
  --font-heading: Georgia, 'Times New Roman', serif;
  --max-width: 960px;
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--color-accent-light);
  text-decoration: none;
  transition: color 0.25s ease;
}

a:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

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

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* -----------------------------------------------------
   Layout
   ----------------------------------------------------- */

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

/* -----------------------------------------------------
   Header & Navigation
   ----------------------------------------------------- */

.site-header {
  background-color: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-logo {
  height: 72px;
  width: auto;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-subtitle {
  font-size: 12px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--color-muted);
  font-weight: 600;
  margin-bottom: 2px;
}

.brand-title {
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-heading);
  line-height: 1.2;
}

.brand-title a {
  color: inherit;
  text-decoration: none;
}

.brand-title a:hover {
  color: var(--color-accent);
}

/* Navigation */
.nav-menu {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 28px;
}

.nav-menu a {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  color: var(--color-text);
  text-decoration: none;
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
  text-decoration: none;
}

/* Mobile toggle */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius);
}

.menu-toggle:focus-visible {
  outline: 2px solid var(--color-accent-light);
  outline-offset: 2px;
}

.menu-toggle .bar {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-heading);
  margin: 5px 0;
  transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: 1px;
}

/* -----------------------------------------------------
   Main Content
   ----------------------------------------------------- */

.site-main {
  min-height: 60vh;
  padding: 56px 0 80px;
}

.page-title {
  font-family: var(--font-heading);
  font-size: 34px;
  font-weight: 700;
  color: var(--color-heading);
  margin-bottom: 36px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--color-border);
  line-height: 1.25;
}

.page-title.centered {
  text-align: center;
  border-bottom: none;
}

/* -----------------------------------------------------
   Typography
   ----------------------------------------------------- */

h2 {
  font-family: var(--font-heading);
  font-size: 26px;
  font-weight: 700;
  color: var(--color-heading);
  margin-top: 40px;
  margin-bottom: 18px;
  line-height: 1.3;
}

h3 {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-heading);
  margin-top: 28px;
  margin-bottom: 12px;
  line-height: 1.35;
}

p {
  margin-bottom: 16px;
}

.lead {
  font-size: 17px;
  line-height: 1.85;
  color: var(--color-text);
}

/* Lists */
ul.clean-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

ul.clean-list li {
  padding: 6px 0;
  position: relative;
  padding-left: 20px;
}

ul.clean-list li::before {
  content: '\2022';
  position: absolute;
  left: 0;
  color: var(--color-accent-light);
  font-weight: bold;
}

ul.nested-list {
  list-style: disc;
  padding-left: 24px;
  margin-top: 8px;
}

ul.nested-list li {
  padding: 4px 0;
}

/* -----------------------------------------------------
   Sections
   ----------------------------------------------------- */

.section {
  margin-bottom: 56px;
}

.home-intro {
  display: flex;
  align-items: flex-start;
  gap: 32px;
}

.home-image {
  flex: 0 0 200px;
  max-width: 200px;
}

.home-image img {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  border: 1px solid var(--color-border);
}

.home-text {
  flex: 1;
}

.home-text p:first-child {
  margin-top: 0;
}

.section-alt {
  background-color: var(--color-bg-alt);
  padding: 44px 28px;
  margin: 0 -24px 56px;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

/* -----------------------------------------------------
   CV Timeline
   ----------------------------------------------------- */

.timeline {
  position: relative;
  padding-left: 28px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background-color: var(--color-border);
  border-radius: 1px;
}

.timeline-item {
  position: relative;
  padding-bottom: 40px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-marker {
  position: absolute;
  left: -33px;
  top: 6px;
  width: 12px;
  height: 12px;
  background-color: var(--color-accent-light);
  border-radius: 50%;
  border: 2px solid var(--color-bg);
  box-shadow: 0 0 0 2px var(--color-border);
}

.timeline-content h3 {
  margin-top: 0;
  margin-bottom: 12px;
}

.timeline-badge {
  display: inline-block;
  background-color: var(--color-accent);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 20px;
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}

.cv-photo {
  margin: 24px auto;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  border: 1px solid var(--color-border);
  max-width: 320px;
}

.cv-photo img {
  width: 100%;
  object-fit: cover;
}

.cv-photo-inline {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin: 24px 0;
}

.cv-photo-inline img {
  border-radius: var(--radius);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  border: 1px solid var(--color-border);
}

.cv-list {
  list-style: none;
  padding: 0;
  margin: 12px 0;
}

.cv-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.cv-list li:last-child {
  border-bottom: none;
}

.cv-list .year {
  font-weight: 700;
  color: var(--color-accent);
  min-width: 60px;
  font-size: 14px;
}

/* -----------------------------------------------------
   Cards / Links
   ----------------------------------------------------- */

.card-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.card {
  display: block;
  padding: 22px 26px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background-color: var(--color-bg);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.card:hover {
  border-color: var(--color-accent-light);
  box-shadow: 0 8px 24px rgba(15, 76, 117, 0.08);
  transform: translateY(-2px);
  text-decoration: none;
}

.card:focus-visible {
  outline: 2px solid var(--color-accent-light);
  outline-offset: 2px;
}

.card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-heading);
  margin-bottom: 6px;
}

.card-meta {
  font-size: 13px;
  color: var(--color-muted);
}

/* -----------------------------------------------------
   Interest Areas
   ----------------------------------------------------- */

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 24px;
}

.service-card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 32px 28px;
  text-align: left;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 48px rgba(15, 76, 117, 0.1);
  border-color: transparent;
}

.service-icon {
  font-size: 40px;
  line-height: 1;
  margin-bottom: 16px;
  text-align: center;
  display: block;
}

.service-card h3 {
  margin-top: 0;
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--color-heading);
  text-align: center;
}

.service-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.service-list li {
  padding: 8px 0;
  font-size: 15px;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
  position: relative;
  padding-left: 20px;
}

.service-list li:last-child {
  border-bottom: none;
}

.service-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 14px;
  width: 6px;
  height: 6px;
  background-color: var(--color-accent-light);
  border-radius: 50%;
}

/* -----------------------------------------------------
   Contact
   ----------------------------------------------------- */

.contact-block {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 32px;
  margin-top: 24px;
}

.contact-item {
  text-align: center;
}

.contact-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--color-muted);
  margin-bottom: 8px;
  font-weight: 600;
}

.contact-value {
  font-size: 16px;
  color: var(--color-heading);
  font-weight: 500;
  line-height: 1.5;
}

.contact-value a {
  color: var(--color-heading);
}

.contact-value a:hover {
  color: var(--color-accent-light);
}

.map-container {
  width: 100%;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  border: 1px solid var(--color-border);
  aspect-ratio: 16 / 9;
  min-height: 320px;
  margin-top: 24px;
  position: relative;
}

.map-info-overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -110%);
  background: #fff;
  padding: 14px 18px;
  border-radius: 10px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.18);
  text-align: left;
  min-width: 200px;
  z-index: 10;
  pointer-events: auto;
}

.map-info-overlay::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: -8px;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 8px solid transparent;
  border-right: 8px solid transparent;
  border-top: 8px solid #fff;
}

.map-info-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-heading);
  margin-bottom: 2px;
}

.map-info-subtitle {
  font-size: 13px;
  color: var(--color-text);
  margin-bottom: 8px;
}

.map-info-link {
  font-size: 13px;
  color: #8e44ad;
  text-decoration: none;
}

.map-info-link:hover {
  text-decoration: underline;
}

.map-container iframe {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

/* -----------------------------------------------------
   Footer
   ----------------------------------------------------- */

.site-footer {
  background-color: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: 40px 0;
  text-align: center;
  font-size: 13px;
  color: var(--color-muted);
}

.site-footer p {
  margin: 4px 0;
}

/* -----------------------------------------------------
   Responsive
   ----------------------------------------------------- */

@media (max-width: 768px) {
  .header-inner {
    padding: 12px 16px;
  }

  .brand-logo {
    height: 56px;
  }

  .brand-title {
    font-size: 18px;
  }

  .brand-subtitle {
    font-size: 11px;
  }

  .menu-toggle {
    display: block;
  }

  .nav-menu {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    padding: 16px 24px;
    gap: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
  }

  .nav-menu.open {
    display: flex;
  }

  .nav-menu a {
    font-size: 14px;
    padding: 8px 0;
    border-bottom: none;
  }

  .site-main {
    padding: 36px 0 56px;
  }

  .page-title {
    font-size: 28px;
  }

  h2 {
    font-size: 22px;
  }

  .container {
    padding: 0 16px;
  }

  .section-alt {
    margin: 0 -16px 48px;
    padding: 32px 20px;
  }

  .cv-photo-inline {
    justify-content: center;
  }

  .home-intro {
    flex-direction: column;
    align-items: center;
  }

  .home-image {
    flex: 0 0 auto;
    max-width: 180px;
    margin-bottom: 8px;
  }

  .timeline {
    padding-left: 20px;
  }

  .timeline-marker {
    left: -25px;
  }

  .contact-block {
    gap: 24px;
  }
}

@media (max-width: 480px) {
  .brand {
    gap: 10px;
  }

  .brand-logo {
    height: 48px;
  }

  .brand-title {
    font-size: 16px;
  }

  .page-title {
    font-size: 24px;
  }
}