/* Apple-style minimalist — white + emerald */

:root {
  --bg:          #ffffff;
  --surface:    #fbfbfd;
  --text:       #1d1d1f;
  --text-2:     #6e6e73;
  --text-3:     #86868b;
  --border:     #d2d2d7;
  --border-2:   #e8e8ed;
  --green:      #2f8a4a;
  --green-2:    #1f6a37;
  --green-light:#d9f0e1;
}

* { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  letter-spacing: -0.01em;
  font-family: "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-feature-settings: "ss01", "cv11";
}

/* Tighten letter spacing on headlines (Apple-style) */
h1, h2, h3, h4, .display { letter-spacing: -0.025em; font-weight: 700; }

/* Hero background — almost pure white, with one barely-there green wash */
.gradient-hero {
  background:
    radial-gradient(ellipse at 80% 30%, rgba(47, 138, 74, 0.06), transparent 50%),
    #ffffff;
}

/* Emerald monochrome accent text */
.accent-text { color: var(--green); }

/* Apple cards: only border, near-zero shadow */
.card {
  background: #ffffff;
  border: 1px solid var(--border-2);
  border-radius: 18px;
}

.card-hover {
  transition: border-color 0.2s ease, transform 0.25s cubic-bezier(.21,.6,.35,1);
}
.card-hover:hover {
  border-color: var(--border);
  transform: translateY(-2px);
}

/* Glass navbar */
.glass {
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
}

#navbar { transition: background 0.3s ease, border-color 0.3s ease; }
#navbar.scrolled {
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border-2);
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s cubic-bezier(.21,.6,.35,1), transform 0.6s cubic-bezier(.21,.6,.35,1);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* Section divider — Apple-style curve, thin in edges, thicker in middle */
.section-divider {
  width: 100%;
  height: 60px;
  display: block;
  pointer-events: none;
  margin: 0;
}
.section-divider svg { display: block; width: 100%; height: 100%; }

/* Form inputs */
.input {
  width: 100%;
  padding: 13px 16px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: #ffffff;
  color: var(--text);
  font-size: 0.95rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  -webkit-appearance: none;
  appearance: none;
}
.input:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 4px rgba(47, 138, 74, 0.12);
}
.input:disabled { background: var(--surface); color: var(--text-3); }

/* Pill buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 500;
  font-size: 15px;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.15s ease;
  border: 0;
  text-decoration: none;
}
.btn:active { transform: scale(0.97); }

.btn-primary {
  background: var(--green);
  color: #ffffff;
}
.btn-primary:hover { background: var(--green-2); }

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

/* Calendar — Apple Calendar style */
.calendar { width: 100%; }
.calendar table { width: 100%; table-layout: fixed; border-collapse: collapse; }
.calendar caption {
  font-weight: 600;
  padding: 8px 0 16px;
  caption-side: top;
  font-size: 15px;
  letter-spacing: -0.01em;
}
.calendar caption > span { display: inline-flex; align-items: center; }
.calendar caption > span:first-child { float: left; }
.calendar caption > span:last-child { float: right; gap: 6px; display: inline-flex; }
.calendar caption::after { content: ""; display: block; clear: both; }
.calendar th {
  font-weight: 500;
  font-size: 11px;
  color: var(--text-3);
  padding: 8px 0;
  text-align: center;
  width: 14.28%;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.calendar td { padding: 0; text-align: center; width: 14.28%; }
.calendar td button {
  width: 100%;
  aspect-ratio: 1;
  border: 0;
  background: transparent;
  border-radius: 50%;
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s ease, color 0.15s ease;
}
.calendar td button:hover:not(:disabled) { background: var(--green-light); color: var(--green-2); }
.calendar td button.outside { color: var(--text-3); }
.calendar td button.today { color: var(--green); font-weight: 700; }
/* Müsait olmayan günler (önce — selected ezecek) */
.calendar td button.unavailable,
.calendar td button.unavailable:disabled {
  color: #c5c5cc;
  text-decoration: line-through;
  cursor: not-allowed;
  opacity: 0.6;
}
.calendar td button:disabled:not(.unavailable):not(.selected) {
  color: var(--border);
  cursor: not-allowed;
}
/* Selected — en yüksek öncelik, her şeyi ezsin */
.calendar td button.selected,
.calendar td button.selected.today,
.calendar td button.selected.unavailable {
  background: var(--green) !important;
  color: #ffffff !important;
  font-weight: 700 !important;
  text-decoration: none !important;
  opacity: 1 !important;
}
.calendar td button.selected:hover {
  background: var(--green-2) !important;
  color: #ffffff !important;
}
.calendar .nav-btn {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 10px;
  cursor: pointer;
  color: var(--text-2);
  font-weight: 500;
  font-family: inherit;
  transition: border-color 0.2s ease, color 0.2s ease;
}
.calendar .nav-btn:hover { border-color: var(--text-2); color: var(--text); }

/* Slot pills */
.slot-btn {
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: #ffffff;
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.2s ease;
}
.slot-btn:hover { border-color: var(--green); color: var(--green-2); }
.slot-btn.selected {
  background: var(--green);
  color: #ffffff;
  border-color: var(--green);
}

/* Spinner */
.spinner {
  display: inline-block;
  width: 14px; height: 14px;
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: middle;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Eyebrow label */
.eyebrow {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.10em;
  color: var(--green);
}

/* Hero portrait — abstract emerald disc with a math glyph */
.hero-art {
  position: relative;
  aspect-ratio: 1;
  max-width: 460px;
  margin: 0 auto;
  border-radius: 50%;
  overflow: hidden;
  background:
    radial-gradient(circle at 30% 30%, rgba(47, 138, 74, 0.18), transparent 60%),
    radial-gradient(circle at 70% 70%, rgba(47, 138, 74, 0.12), transparent 60%),
    linear-gradient(135deg, #f5fbf7 0%, #ffffff 100%);
  border: 1px solid var(--border-2);
}
.hero-art .glyph {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "Plus Jakarta Sans", serif;
  font-style: italic;
  font-weight: 300;
  font-size: 14rem;
  color: var(--green);
  opacity: 0.32;
  letter-spacing: -0.05em;
  z-index: 0;
}
.hero-art img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}