/* ==========================================================================
   Tamin Group — Static Site Stylesheet
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design tokens
   -------------------------------------------------------------------------- */
:root {
  /* Colors — sampled from existing site */
  --color-bg: #ffffff;
  --color-bg-section: #f2f2f2;     /* light gray band (intro sections) */
  --color-header-bg: #fafafa;      /* header strip — biraz açık */
  --color-footer-bg: #2b2b2b;      /* footer dark */
  --color-text: #333333;
  --color-text-muted: #666666;
  --color-text-on-dark: #ffffff;
  --color-text-on-dark-muted: #cccccc;
  --color-accent: #e85a2c;         /* Tamin orange (logo triangle, slider caption) */
  --color-accent-dark: #c94a20;
  --color-link: #c1272d;           /* red links (emails on contact page) */
  --color-border: #e0e0e0;

  /* Typography */
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
               'Helvetica Neue', Arial, sans-serif;
  --font-heading: var(--font-body);

  --fs-body: 16px;
  --fs-small: 14px;
  --fs-lead: 17px;
  --fs-h1: clamp(1.75rem, 2.5vw + 0.5rem, 2.5rem);
  --fs-h2: clamp(1.4rem, 1.5vw + 0.75rem, 1.75rem);
  --fs-h3: 1.2rem;

  --lh-body: 1.65;
  --lh-heading: 1.25;

  /* Layout */
  --container-max: 1200px;
  --container-narrow: 900px;
  --container-pad: 20px;
  --header-h: 90px;

  /* Spacing scale */
  --sp-1: 8px;
  --sp-2: 16px;
  --sp-3: 24px;
  --sp-4: 32px;
  --sp-5: 48px;
  --sp-6: 64px;
  --sp-7: 96px;

  --radius: 0;              /* keep it sharp — matches existing look */
  --shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  --transition: 200ms ease;
}

/* --------------------------------------------------------------------------
   2. Reset & base
   -------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

html {
  background: #ffffff;   /* solid white surround */
}

body {
  margin: 0;
  /* boxed layout: body full-width; main and footer get their own 1200px cap below */
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

/* Main content boxed at 1200px */
main {
  max-width: var(--container-max);
  margin: 0 auto;
}

/* Footer boxed at 1200px (dark bar sits inside a centered 1200px column) */
.site-footer {
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
}

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

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

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: var(--lh-heading);
  margin: 0 0 var(--sp-3);
  color: #1a1a1a;
}
h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); font-weight: 600; }

p { margin: 0 0 var(--sp-2); }

ul, ol { margin: 0 0 var(--sp-2); padding-left: var(--sp-3); }

/* Container */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}
.container--narrow { max-width: var(--container-narrow); }

/* Skip link (accessibility) */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-accent);
  color: #fff;
  padding: 8px 16px;
  z-index: 999;
}
.skip-link:focus { left: 0; }

/* Focus visible */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   3. Header
   -------------------------------------------------------------------------- */
.site-header {
  background: var(--color-header-bg);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  min-height: var(--header-h);
  padding: var(--sp-2) var(--container-pad);
  max-width: var(--container-max);
  margin: 0 auto;
}

.site-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.site-logo img { height: 69px; width: auto; }   /* 60px + 15% */

/* Nav */
.site-nav {
  display: flex;
  align-items: center;
}
.site-nav__list {
  display: flex;
  gap: var(--sp-4);
  list-style: none;
  margin: 0;
  padding: 0;
}
.site-nav__link {
  display: block;
  padding: var(--sp-1) 0;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  position: relative;
}
.site-nav__link:hover,
.site-nav__link.is-active {
  color: var(--color-accent);
}
.site-nav__link.is-active::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -4px;
  height: 2px;
  background: var(--color-accent);
}

/* Menu toggle (mobile) */
.nav-toggle {
  display: none;
  background: transparent;
  border: 0;
  padding: var(--sp-1);
  cursor: pointer;
  color: var(--color-text);
}
.nav-toggle svg { width: 28px; height: 28px; }

/* --------------------------------------------------------------------------
   4. Hero / page banner
   -------------------------------------------------------------------------- */
.hero-image {
  width: 100%;
  aspect-ratio: 1200 / 380;
  background: #ccc center / cover no-repeat;
  overflow: hidden;
}
/* Inner-page top hero banners at 83% opacity (home slider unaffected) */
.hero-image--faded {
  opacity: 0.83;
}

/* --------------------------------------------------------------------------
   5. Homepage slider
   -------------------------------------------------------------------------- */
.slider {
  position: relative;
  width: 100%;
  aspect-ratio: 1200 / 550;
  max-height: 70vh;
  overflow: hidden;
  background: #111;
}
.slider__track {
  position: relative;
  width: 100%;
  height: 100%;
}
.slider__slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 800ms ease;
  background-size: cover;
  background-position: center;
}
.slider__slide.is-active { opacity: 1; }


.slider__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: transparent;
  border: 0;
  color: #fff;
  font-size: 2.5rem;
  padding: var(--sp-2);
  cursor: pointer;
  opacity: 0.7;
  transition: opacity var(--transition);
}
.slider__nav:hover { opacity: 1; }
.slider__nav--prev { left: var(--sp-2); }
.slider__nav--next { right: var(--sp-2); }

.slider__dots {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0;
  z-index: 2;
}
.slider__dot {
  /* 24px tap target; visible dot = 24 − 2×padding. Inactive 10px, active 13px (+30%).
     Use background-color (not shorthand) so background-clip survives on .is-active */
  width: 24px;
  height: 24px;
  padding: 7px;
  box-sizing: border-box;
  border-radius: 50%;
  border: 0;
  background-color: rgba(255, 255, 255, 0.5);
  background-clip: content-box;
  cursor: pointer;
  transition: background-color var(--transition), padding var(--transition);
}
.slider__dot.is-active {
  background-color: #fff;
  padding: 5.5px;   /* 13px visible */
}

/* --------------------------------------------------------------------------
   6. Sections
   -------------------------------------------------------------------------- */
.section {
  padding: var(--sp-6) 0;
}
.section--gray {
  background: var(--color-bg-section);
}
.section--tight { padding: var(--sp-5) 0; }

.section-intro {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}
.section-intro p {
  font-size: var(--fs-lead);
  color: var(--color-text);
}

.section-heading {
  text-align: center;
  margin-bottom: var(--sp-3);
  font-size: var(--fs-h2);   /* page titles = Why Tamin size */
}

.section-divider {
  height: 1px;
  max-width: 900px;
  margin: var(--sp-5) auto;
  background: var(--color-border);
  border: 0;
}

/* --------------------------------------------------------------------------
   7. Intro values (homepage: Why Tamin + 3 pillars)
   -------------------------------------------------------------------------- */
.intro-values__lead {
  max-width: 780px;
  margin: 0 auto var(--sp-6);
  text-align: center;
  font-size: var(--fs-lead);
  color: var(--color-text);
}
.intro-values__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-5);
  max-width: 1000px;
  margin: 0 auto;
}
.intro-values__item {
  padding: 0;
}
.intro-values__item::before {
  content: '';
  display: block;
  width: 36px;
  height: 2px;
  background: var(--color-accent);
  margin-bottom: var(--sp-2);
}
.intro-values__item h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: #1a1a1a;
  margin: 0 0 var(--sp-2);
  line-height: 1.35;
}
.intro-values__item p {
  color: var(--color-text);
  margin: 0;
  font-size: 0.97rem;
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   8. Service blocks (image left, text right)
   -------------------------------------------------------------------------- */
.service-list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-6);
}
.service {
  display: grid;
  grid-template-columns: 312px 1fr;   /* was 260px — +20% */
  gap: var(--sp-4);
  align-items: flex-start;
}
.service__media {
  aspect-ratio: 4 / 3;
  background: #ddd center / cover no-repeat;
}
.service__body h2 {
  margin: 0 0 var(--sp-2);
  font-size: 1.15rem;
  color: #1a1a1a;
}
.service__body p {
  margin: 0 0 var(--sp-2);
  color: var(--color-text);
}

/* Modifier: service list matched to project image size (Consulting, Construction, Other Expertise) */
.service-list--wide .service {
  grid-template-columns: 432px 1fr;
}
.service-list--wide .service__media {
  aspect-ratio: 16 / 9;
}

/* --------------------------------------------------------------------------
   9. Projects grid (used on Projects page)
   -------------------------------------------------------------------------- */
.project-list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}
.project {
  display: grid;
  grid-template-columns: 432px 1fr;   /* was 360px — +20% */
  gap: var(--sp-4);
  padding-bottom: var(--sp-4);
  border-bottom: 1px solid var(--color-border);
  align-items: flex-start;
}
.project:last-child { border-bottom: 0; }
.project__media {
  aspect-ratio: 16 / 9;   /* was 4/3 — more horizontal frame; image itself unchanged, cover crops top/bottom */
  background: #ddd center / cover no-repeat;
}
.project__body h2 {
  margin: 0 0 var(--sp-1);
  font-size: 1.1rem;
  color: #1a1a1a;
}
.project__meta {
  color: var(--color-text-muted);
  font-size: var(--fs-small);
  margin: 0 0 var(--sp-2);
}
.project__details {
  margin: 0;
  font-size: var(--fs-small);
  color: var(--color-text);
}

/* Project card mini slider (variant of .project__media) */
.project__media--slider {
  position: relative;
  overflow: hidden;
  background: #ddd;
}
.project-slider__track {
  position: relative;
  width: 100%;
  height: 100%;
}
.project-slider__slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 500ms ease;
}
.project-slider__slide.is-active { opacity: 1; }

.project-slider__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 32px;
  height: 32px;
  background: rgba(0, 0, 0, 0.4);
  border: 0;
  color: #fff;
  font-size: 1.4rem;
  line-height: 1;
  padding: 0;
  cursor: pointer;
  opacity: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity var(--transition), background var(--transition);
}
.project__media--slider:hover .project-slider__nav,
.project__media--slider:focus-within .project-slider__nav { opacity: 1; }
.project-slider__nav:hover { background: rgba(0, 0, 0, 0.7); }
.project-slider__nav--prev { left: 8px; }
.project-slider__nav--next { right: 8px; }

.project-slider__dots {
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0;
  z-index: 2;
}
.project-slider__dot {
  /* 16px tap target; visible dot = 16 − 2×padding. Inactive 7px, active 9px (+30%). */
  width: 16px;
  height: 16px;
  padding: 4.5px;
  box-sizing: border-box;
  border-radius: 50%;
  border: 0;
  background-color: rgba(255, 255, 255, 0.55);
  background-clip: content-box;
  cursor: pointer;
  transition: background-color var(--transition), padding var(--transition);
}
.project-slider__dot.is-active {
  background-color: #fff;
  padding: 3.5px;   /* 9px visible */
}

/* Touch devices: keep nav visible (no hover) */
@media (hover: none) {
  .project__media--slider .project-slider__nav {
    opacity: 0.85;
    width: 40px;
    height: 40px;
  }
}

/* --------------------------------------------------------------------------
   10. Contact page
   -------------------------------------------------------------------------- */
.contact-row {
  display: grid;
  grid-template-columns: 576px 1fr;   /* was 480px — +20% */
  gap: var(--sp-5);
  padding: var(--sp-5) 0;
  border-bottom: 1px solid var(--color-border);
  align-items: flex-start;
}
.contact-row:last-child { border-bottom: 0; }

.contact-row__map {
  aspect-ratio: 4 / 3;
  background: #eee;
  overflow: hidden;
}
.contact-row__map iframe {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
}

.contact-row__info h2 {
  margin: 0 0 var(--sp-2);
  font-size: 1.25rem;
}
.contact-row__info p {
  margin: 0 0 var(--sp-1);
}
.contact-row__info a[href^="mailto:"] {
  color: var(--color-link);
}
.contact-row__info a[href^="mailto:"]:hover {
  color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   10b. Contact form
   -------------------------------------------------------------------------- */
.contact-form-wrap {
  max-width: 576px;   /* matches map column width */
  padding-top: var(--sp-5);   /* breathing room after the border divider from the row above */
}
.contact-form__title {
  font-size: var(--fs-h2);
  font-weight: 700;
  color: #1a1a1a;
  margin: 0 0 var(--sp-4);
  line-height: var(--lh-heading);
}
.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}
.contact-form__row {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.contact-form__label {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
}
.contact-form__label > span[aria-hidden] {
  color: var(--color-accent);
  margin-left: 2px;
}
.contact-form__optional {
  color: var(--color-text-muted);
  font-weight: 400;
  font-size: 0.85em;
  margin-left: 4px;
}
.contact-form__input {
  width: 100%;
  padding: 12px 14px;
  font-family: inherit;
  font-size: 1rem;
  color: var(--color-text);
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 0;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.contact-form__input:hover {
  border-color: #b8b8b8;
}
.contact-form__input:focus {
  outline: 0;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(232, 90, 44, 0.15);
}
.contact-form__input--textarea {
  resize: vertical;
  min-height: 140px;
  line-height: 1.5;
  font-family: inherit;
}
.contact-form__submit {
  margin-top: var(--sp-2);
  padding: 14px 32px;
  align-self: flex-start;
  background: var(--color-accent);
  color: #fff;
  border: 0;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  cursor: pointer;
  transition: background var(--transition);
}
.contact-form__submit:hover {
  background: var(--color-accent-dark);
}
.contact-form__submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}
.contact-form__status {
  padding: 12px 14px;
  border-left: 3px solid var(--color-border);
  background: #fafafa;
  font-size: 0.95rem;
  margin-top: var(--sp-2);
}
.contact-form__status--success {
  border-color: #22a05c;
  background: #f2faf5;
}
.contact-form__status--error {
  border-color: var(--color-link);
  background: #fdf5f5;
}
/* Honeypot — hidden from users, visible to bots */
.contact-form__honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* --------------------------------------------------------------------------
   11. Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background: var(--color-footer-bg);
  color: var(--color-text-on-dark);
  padding: var(--sp-5) 0;
}
.site-footer__inner {
  display: grid;
  grid-template-columns: auto auto;   /* columns size to content */
  justify-content: center;            /* the pair is centered as a group */
  gap: var(--sp-7);
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}
.site-footer h4 {
  color: #fff;
  font-size: 1rem;
  margin: 0 0 var(--sp-2);
}
.site-footer p {
  margin: 0 0 4px;
  color: var(--color-text-on-dark-muted);
  font-size: var(--fs-small);
}
.site-footer a { color: var(--color-text-on-dark-muted); }
.site-footer a:hover { color: var(--color-accent); }

.site-footer__bottom {
  max-width: var(--container-max);
  margin: var(--sp-4) auto 0;
  padding: var(--sp-3) var(--container-pad) 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  color: var(--color-text-on-dark-muted);
  font-size: 13px;
}

/* --------------------------------------------------------------------------
   12. Utilities
   -------------------------------------------------------------------------- */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* --------------------------------------------------------------------------
   13. Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 900px) {
  :root {
    --header-h: 70px;
    --sp-6: 48px;
    --sp-7: 64px;
  }

  /* Header — mobile nav */
  .nav-toggle { display: block; }
  .site-nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    background: var(--color-header-bg);
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-120%);
    visibility: hidden;
    box-shadow: var(--shadow);
    /* transition added only once JS marks the nav ready (data-nav-ready),
       so crossing into this breakpoint never animates the closed state. */
  }
  .site-nav[data-nav-ready] {
    transition: transform 300ms ease, visibility 300ms ease;
  }
  .site-nav.is-open {
    transform: translateY(0);
    visibility: visible;
  }
  .site-nav__list {
    flex-direction: column;
    gap: 0;
    padding: var(--sp-2) 0;
  }
  .site-nav__list li {
    border-bottom: 1px solid var(--color-border);
  }
  .site-nav__list li:last-child { border-bottom: 0; }
  .site-nav__link {
    display: block;
    padding: var(--sp-2) var(--container-pad);
  }
  .site-nav__link.is-active::after { display: none; }

  /* Layouts collapse */
  .site-footer__inner,
  .intro-values__grid {
    grid-template-columns: 1fr;
    gap: var(--sp-4);
  }
  /* Tablet + phone: footer content centered */
  .site-footer__inner {
    text-align: center;
  }
  .service,
  .service-list--wide .service,   /* match modifier specificity so mobile collapse wins */
  .project,
  .contact-row {
    grid-template-columns: 1fr;
    gap: var(--sp-3);
  }
  /* Service pages: text centered under the image on mobile */
  .service__body {
    text-align: center;
  }
  /* Homepage pillars: centered on mobile, accent line centered too */
  .intro-values__item {
    text-align: center;
  }
  .intro-values__item::before {
    margin-left: auto;
    margin-right: auto;
  }
  /* Mobil: görsel alanlarını viewport kenarına dayat (container'ın 20px padding'ini negatif margin ile geç). Text container içinde kaldığı için 20px inset korunuyor. */
  .service__media,
  .project__media,
  .contact-row__map {
    width: calc(100% + var(--container-pad) * 2);
    margin-left: calc(var(--container-pad) * -1);
    margin-right: calc(var(--container-pad) * -1);
    max-width: none;
  }

  /* Slider — keep the image's native ratio so nothing is cropped left/right */
  .slider { aspect-ratio: 1080 / 510; }
  .slider__nav { font-size: 1.75rem; }
}

@media (max-width: 500px) {
  .site-logo img { height: 51px; }   /* 44px + 15% */
  .slider { aspect-ratio: 1080 / 510; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .slider__slide { transition: none; }
}

/* Print — hide chrome */
@media print {
  .site-header, .site-footer, .slider__nav, .slider__dots, .nav-toggle {
    display: none;
  }
}