/* Tessyn Labs — stylesheet */

:root {
  --petrol: #0E3B43;
  --turquoise: #19C3B1;
  --turquoise-dark: #0E7C72;
  --cream: #F6F5F1;
  --white: #FFFFFF;
  --ink: var(--petrol);
  --max-width: 1120px;
  --gutter: 20px;
  --radius: 10px;
  --font-body: 'Manrope', system-ui, -apple-system, 'Segoe UI', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  background: var(--cream);
  color: var(--ink);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--turquoise-dark); text-decoration-thickness: 1.5px; text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }

h1, h2, h3, h4 {
  font-family: var(--font-body);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.01em;
  margin: 0 0 0.5em;
  color: var(--petrol);
}

h1 { font-size: clamp(2rem, 1.5rem + 2.2vw, 3.4rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.5rem, 1.25rem + 1.1vw, 2.25rem); }
h3 { font-size: 1.15rem; }

p { margin: 0 0 1em; }

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

section { padding: 72px 0; }
@media (min-width: 768px) { section { padding: 104px 0; } }

/* Focus visibility */
:focus-visible {
  outline: 3px solid var(--turquoise-dark);
  outline-offset: 3px;
  border-radius: 4px;
}
a:focus-visible, button:focus-visible { outline-offset: 2px; }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--petrol);
  color: var(--white);
  padding: 12px 18px;
  z-index: 200;
  border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 24px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, background-color 0.15s ease, border-color 0.15s ease;
  line-height: 1.2;
}
@media (prefers-reduced-motion: reduce) { .btn { transition: none; } }

.btn-primary {
  background: var(--petrol);
  color: var(--white);
}
.btn-primary:hover { background: #0a2d33; }
.btn-primary:active { transform: scale(0.98); }

.btn-ghost {
  background: transparent;
  color: var(--petrol);
  border-color: var(--petrol);
}
.btn-ghost:hover { background: rgba(14, 59, 67, 0.06); }

.btn-sm { padding: 10px 16px; font-size: 0.9rem; }
.btn-block { width: 100%; }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
  color: var(--petrol);
}
.link-arrow svg { width: 16px; height: 16px; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(246, 245, 241, 0.92);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid rgba(14, 59, 67, 0.08);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px var(--gutter);
  max-width: var(--max-width);
  margin: 0 auto;
  gap: 16px;
}
.brand { display: flex; align-items: center; }
.brand img { height: 32px; width: auto; }
.brand:focus-visible { outline-offset: 4px; }

.nav-desktop {
  display: none;
}
.nav-desktop ul {
  list-style: none;
  display: flex;
  gap: 28px;
  margin: 0;
  padding: 0;
}
.nav-desktop a {
  color: var(--petrol);
  text-decoration: none;
  font-weight: 500;
}
.nav-desktop a:hover { color: var(--turquoise-dark); }

.header-cta { display: flex; align-items: center; gap: 10px; }

.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 8px;
  border: 1.5px solid rgba(14, 59, 67, 0.25);
  background: transparent;
  cursor: pointer;
}
.nav-toggle svg { width: 22px; height: 22px; }

.nav-mobile {
  display: none;
  border-top: 1px solid rgba(14, 59, 67, 0.08);
  background: var(--cream);
}
.nav-mobile.is-open { display: block; }
.nav-mobile ul {
  list-style: none;
  margin: 0;
  padding: 8px var(--gutter) 20px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.nav-mobile a {
  display: block;
  padding: 12px 4px;
  color: var(--petrol);
  text-decoration: none;
  font-weight: 600;
  border-bottom: 1px solid rgba(14, 59, 67, 0.06);
}

@media (min-width: 900px) {
  .nav-desktop { display: block; }
  .nav-toggle { display: none; }
  .nav-mobile { display: none !important; }
}

/* Hero */
.hero {
  padding-top: 56px;
  padding-bottom: 56px;
}
@media (min-width: 768px) { .hero { padding-top: 88px; padding-bottom: 88px; } }

.hero-grid {
  display: grid;
  gap: 40px;
  align-items: center;
}
@media (min-width: 900px) {
  .hero-grid { grid-template-columns: 1.1fr 0.9fr; gap: 56px; }
}

.hero h1 { max-width: 16ch; }
.hero-sub {
  font-size: 1.125rem;
  color: #2b545c;
  max-width: 48ch;
  margin-bottom: 1.75em;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px;
}

.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 260px;
}

/* Tile mark (shared T motif) */
.tile-mark {
  width: min(280px, 60vw);
  height: auto;
}
.tile-mark rect {
  opacity: 0;
  transform-origin: center;
}
.tile-mark.play rect {
  animation: tile-in 0.5s cubic-bezier(.2,.7,.3,1) forwards;
}
.tile-mark.play rect:nth-child(1) { animation-delay: 0s; }
.tile-mark.play rect:nth-child(2) { animation-delay: 0.08s; }
.tile-mark.play rect:nth-child(3) { animation-delay: 0.16s; }
.tile-mark.play rect:nth-child(4) { animation-delay: 0.26s; }
.tile-mark.play rect:nth-child(5) { animation-delay: 0.36s; }

@keyframes tile-in {
  from { opacity: 0; transform: scale(0.4); }
  to { opacity: 1; transform: scale(1); }
}
@media (prefers-reduced-motion: reduce) {
  .tile-mark rect { opacity: 1; animation: none !important; }
}
.no-js .tile-mark rect { opacity: 1; }

/* Section heading */
.section-head { max-width: 62ch; margin-bottom: 40px; }
.section-head p { color: #2b545c; font-size: 1.05rem; }

/* What we do */
.services-list {
  display: grid;
  gap: 28px;
}
@media (min-width: 768px) { .services-list { grid-template-columns: repeat(3, 1fr); gap: 32px; } }

.service-item { border-top: 2px solid rgba(14, 59, 67, 0.14); padding-top: 20px; }
.service-item h3 { margin-bottom: 0.4em; }
.service-item p { color: #2b545c; margin-bottom: 0; }

/* Pricing */
.pricing-list { display: flex; flex-direction: column; gap: 0; background: var(--white); border-radius: var(--radius); overflow: hidden; border: 1px solid rgba(14,59,67,0.1); }
.plan-row {
  display: grid;
  gap: 16px;
  padding: 28px var(--gutter);
  border-bottom: 1px solid rgba(14, 59, 67, 0.1);
  align-items: start;
}
.plan-row:last-child { border-bottom: none; }
@media (min-width: 768px) {
  .plan-row { grid-template-columns: 1.1fr 1.6fr auto; gap: 24px; align-items: center; }
}

.plan-row.is-featured { background: #FBFAF6; position: relative; }
.plan-row.is-featured::before {
  content: "En çok tercih edilen";
  display: inline-block;
  background: var(--turquoise);
  color: var(--petrol);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 10px;
}
@media (min-width: 768px) {
  .plan-row.is-featured::before { position: absolute; top: -14px; left: 24px; margin-bottom: 0; }
}

.plan-name { margin: 0 0 4px; font-size: 1.2rem; }
.plan-price { font-weight: 700; color: var(--turquoise-dark); font-size: 1.05rem; }
.plan-desc { color: #2b545c; margin: 8px 0 0; font-size: 0.95rem; }

.plan-features {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 0.95rem;
}
.plan-features li { display: flex; gap: 8px; align-items: flex-start; }
.plan-features li svg { flex: none; width: 16px; height: 16px; margin-top: 3px; color: var(--turquoise-dark); }

.maintenance-box {
  margin-top: 28px;
  background: var(--petrol);
  color: var(--cream);
  border-radius: var(--radius);
  padding: 28px;
  display: grid;
  gap: 16px;
}
@media (min-width: 768px) { .maintenance-box { grid-template-columns: 1fr auto; align-items: center; padding: 32px 36px; } }
.maintenance-box h3 { color: var(--white); margin-bottom: 4px; }
.maintenance-box .plan-price { color: #7FE0D6; }
.maintenance-box ul { list-style: none; margin: 10px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px 18px; font-size: 0.92rem; }
.maintenance-box ul li { color: #D8EDEA; }
.maintenance-box p.note { margin: 10px 0 0; font-size: 0.9rem; color: #A9CFCA; }

/* How it works */
.steps {
  display: grid;
  gap: 28px;
  counter-reset: step;
}
@media (min-width: 768px) { .steps { grid-template-columns: repeat(4, 1fr); gap: 24px; } }

.step {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.step-tiles {
  display: flex;
  gap: 6px;
}
.step-tiles span {
  width: 14px;
  height: 14px;
  border-radius: 3px;
  background: rgba(14, 59, 67, 0.16);
}
.step.is-active .step-tiles span,
.step-tiles span.is-filled {
  background: var(--turquoise);
}
.step .step-num {
  font-weight: 700;
  color: var(--turquoise-dark);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
}
.step h3 { margin: 2px 0 2px; }
.step p { color: #2b545c; margin: 0; font-size: 0.95rem; }

.process-note {
  margin-top: 28px;
  font-size: 0.92rem;
  color: #2b545c;
}

/* Work samples */
.work-grid {
  display: grid;
  gap: 24px;
}
@media (min-width: 768px) { .work-grid { grid-template-columns: repeat(3, 1fr); } }

.work-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid rgba(14, 59, 67, 0.1);
  text-decoration: none;
  color: var(--ink);
  display: block;
}
.work-card h3 { margin-bottom: 6px; }
.work-card p { color: #2b545c; margin-bottom: 14px; font-size: 0.95rem; }

/* Why us */
.why-grid {
  display: grid;
  gap: 28px;
}
@media (min-width: 768px) { .why-grid { grid-template-columns: repeat(2, 1fr); gap: 32px 40px; } }
.why-item { display: flex; gap: 14px; }
.why-item .why-tile {
  flex: none;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--turquoise);
}
.why-item h3 { margin-bottom: 4px; }
.why-item p { color: #2b545c; margin: 0; }

/* FAQ */
.faq-list { display: flex; flex-direction: column; gap: 0; border-top: 1px solid rgba(14, 59, 67, 0.14); }
.faq-item { border-bottom: 1px solid rgba(14, 59, 67, 0.14); }
.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 20px 4px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-weight: 700;
  font-size: 1.02rem;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary .faq-icon {
  flex: none;
  width: 22px;
  height: 22px;
  color: var(--turquoise-dark);
  transition: transform 0.2s ease;
}
@media (prefers-reduced-motion: reduce) { .faq-item summary .faq-icon { transition: none; } }
.faq-item[open] summary .faq-icon { transform: rotate(45deg); }
.faq-item .faq-answer { padding: 0 4px 20px; color: #2b545c; max-width: 68ch; }

/* Contact */
.contact-grid {
  display: grid;
  gap: 40px;
}
@media (min-width: 900px) { .contact-grid { grid-template-columns: 1fr 1fr; gap: 56px; } }

.form-field { margin-bottom: 18px; }
.form-field label {
  display: block;
  font-weight: 600;
  margin-bottom: 6px;
  font-size: 0.95rem;
}
.form-field input,
.form-field textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: 8px;
  border: 1.5px solid rgba(14, 59, 67, 0.25);
  background: var(--white);
  font: inherit;
  color: var(--ink);
}
.form-field input:focus,
.form-field textarea:focus { border-color: var(--turquoise-dark); }
.form-field textarea { resize: vertical; min-height: 110px; }
.form-note { font-size: 0.85rem; color: #4a6a70; margin-top: 10px; }

.contact-direct { display: flex; flex-direction: column; gap: 20px; }
.contact-direct-item { display: flex; gap: 14px; align-items: flex-start; }
.contact-direct-item svg { flex: none; width: 22px; height: 22px; color: var(--turquoise-dark); margin-top: 2px; }
.contact-direct-item a { color: var(--petrol); font-weight: 700; text-decoration: none; }
.contact-direct-item a:hover { color: var(--turquoise-dark); }
.contact-direct-item p { margin: 0; color: #2b545c; font-size: 0.95rem; }

/* Footer */
.site-footer {
  background: var(--petrol);
  color: #CFE2DF;
  padding: 48px 0 28px;
}
.footer-top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 28px;
}
.footer-tag { color: #A9CFCA; margin-top: 10px; font-size: 0.95rem; }
.footer-links { list-style: none; display: flex; flex-wrap: wrap; gap: 8px 20px; margin: 0; padding: 0; }
.footer-links a { color: #CFE2DF; text-decoration: none; }
.footer-links a:hover { color: var(--turquoise); }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  align-items: center;
  font-size: 0.88rem;
  color: #A9CFCA;
}
.footer-bottom a { color: #A9CFCA; }

.legal-page main { max-width: 760px; margin: 0 auto; padding: 56px var(--gutter) 80px; }
.legal-page h2 { margin-top: 1.6em; }
.legal-page .updated { color: #4a6a70; font-size: 0.9rem; }