/* ═══════════════════════════════════════════════════════
   OBCP — iOS Design System
   Matches Apple Human Interface Guidelines exactly.
   ═══════════════════════════════════════════════════════ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }

:root {
  /* ── System Blue (primary tint) ── */
  --ios-blue:        #007AFF;
  --ios-blue-bg:     rgba(0,122,255,0.10);
  --ios-blue-tint:   rgba(0,122,255,0.12);

  /* ── System Colors ── */
  --ios-green:   #34C759;
  --ios-red:     #FF3B30;
  --ios-orange:  #FF9500;
  --ios-yellow:  #FFCC00;
  --ios-purple:  #AF52DE;
  --ios-pink:    #FF2D55;
  --ios-teal:    #5AC8FA;
  --ios-indigo:  #5856D6;

  /* ── Backgrounds ── */
  --ios-bg:       #F2F2F7;   /* systemGroupedBackground */
  --ios-surface:  #FFFFFF;   /* secondarySystemGroupedBackground */
  --ios-surface3: #F2F2F7;   /* tertiarySystemGroupedBackground */

  /* ── Labels ── */
  --ios-label:   #000000;
  --ios-label2:  rgba(60,60,67,0.60);
  --ios-label3:  rgba(60,60,67,0.30);
  --ios-label4:  rgba(60,60,67,0.18);

  /* ── Separators ── */
  --ios-sep:       rgba(60,60,67,0.36);
  --ios-sep-light: rgba(60,60,67,0.12);

  /* ── Fills ── */
  --ios-fill:  rgba(120,120,128,0.20);
  --ios-fill2: rgba(120,120,128,0.16);
  --ios-fill3: rgba(118,118,128,0.12);
  --ios-fill4: rgba(116,116,128,0.08);

  /* ── Shape ── */
  --ios-radius:    10px;
  --ios-radius-lg: 16px;

  /* ── Shadow ── */
  --ios-shadow: 0 1px 0 rgba(0,0,0,0.04), 0 2px 8px rgba(0,0,0,0.04);
}

/* ── Base ── */
html {
  height: 100%;
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Helvetica Neue', Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background: var(--ios-bg);
  color: var(--ios-label);
  min-height: 100vh;
}
a { color: var(--ios-blue); text-decoration: none; }
button, input, select, textarea { font-family: inherit; }

/* ── Page scaffold ── */
.ios-page {
  padding-top: calc(44px + max(0px, env(safe-area-inset-top)));
  padding-bottom: calc(49px + max(0px, env(safe-area-inset-bottom)) + 20px);
  min-height: 100vh;
}
.ios-content {
  max-width: 640px;
  margin: 0 auto;
  padding: 20px 16px 0;
}

/* ── Navigation Bar ── */
.ios-navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  height: calc(44px + env(safe-area-inset-top));
  background: rgba(242,242,247,0.94);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 0.5px solid rgba(0,0,0,0.20);
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding: 0 8px calc(8px + 0px);
  padding-top: env(safe-area-inset-top);
}
.ios-navbar-title {
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.41px;
  color: var(--ios-label);
  position: absolute;
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
}
.ios-back-btn {
  display: flex; align-items: center; gap: 3px;
  color: var(--ios-blue);
  font-size: 1.0625rem; font-weight: 400; letter-spacing: -0.41px;
  background: none; border: none; cursor: pointer;
  padding: 8px 8px; min-height: 44px; min-width: 44px;
}
.ios-back-btn i { font-size: 1.1rem; }
.ios-back-btn:active { opacity: 0.5; }
.ios-nav-action {
  color: var(--ios-blue);
  font-size: 1.0625rem; font-weight: 600; letter-spacing: -0.41px;
  background: none; border: none; cursor: pointer;
  padding: 8px 8px; min-height: 44px;
}
.ios-nav-action:active { opacity: 0.5; }

/* ── Tab Bar ── */
.ios-tabbar {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 200;
  display: flex;
  background: rgba(249,249,249,0.94);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-top: 0.5px solid rgba(0,0,0,0.20);
  padding-bottom: env(safe-area-inset-bottom, 0px);
}
.ios-tab-item {
  flex: 1;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 3px;
  padding: 8px 4px 4px;
  background: none; border: none; cursor: pointer;
  color: rgba(60,60,67,0.50);
  font-size: 0.625rem; font-weight: 500; letter-spacing: 0.12px;
  min-height: 49px;
  transition: color 0.15s;
}
.ios-tab-item i { font-size: 1.5rem; transition: color 0.15s; }
.ios-tab-item.active { color: var(--ios-blue); }
.ios-tab-item.active i { color: var(--ios-blue); }
.ios-tab-item:active { opacity: 0.6; }

/* ── Grouped List (Settings style) ── */
.ios-section { margin-bottom: 36px; }
.ios-section-header {
  font-size: 0.8125rem; font-weight: 400;
  color: var(--ios-label2); letter-spacing: -0.08px;
  text-transform: uppercase;
  padding: 0 16px; margin-bottom: 8px;
}
.ios-section-footer {
  font-size: 0.8125rem; font-weight: 400;
  color: var(--ios-label2); letter-spacing: -0.08px;
  padding: 8px 16px 0; line-height: 1.46;
}
.ios-list {
  background: var(--ios-surface);
  border-radius: var(--ios-radius);
  overflow: hidden;
}
.ios-row {
  display: flex; align-items: center; gap: 12px;
  padding: 11px 16px;
  background: var(--ios-surface);
  min-height: 44px;
  position: relative;
}
.ios-row + .ios-row::before {
  content: '';
  position: absolute;
  top: 0; left: 56px; right: 0;
  height: 0.5px;
  background: var(--ios-sep-light);
}
.ios-row-label {
  flex: 1;
  font-size: 1.0625rem; font-weight: 400;
  letter-spacing: -0.41px; color: var(--ios-label);
}
.ios-row-value {
  font-size: 1.0625rem; font-weight: 400;
  letter-spacing: -0.41px; color: var(--ios-label2);
}
.ios-row-chevron { color: var(--ios-label3); font-size: 0.875rem; margin-left: 4px; }
.ios-row-tappable {
  cursor: pointer; display: flex;
  text-decoration: none; color: inherit;
}
.ios-row-tappable:active { background: rgba(0,0,0,0.06) !important; }
.ios-row-destructive .ios-row-label { color: var(--ios-red) !important; }

/* ── Icon badge (settings-style colored square icon) ── */
.ios-icon {
  width: 29px; height: 29px; border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.875rem; color: #fff; flex-shrink: 0;
}

/* ── Text Fields ── */
.ios-field {
  display: flex; align-items: center; gap: 12px;
  padding: 11px 16px;
  background: var(--ios-surface);
  min-height: 44px;
  position: relative;
}
.ios-field + .ios-field::before {
  content: '';
  position: absolute;
  top: 0; left: 16px; right: 0;
  height: 0.5px;
  background: var(--ios-sep-light);
}
.ios-field-label {
  font-size: 1.0625rem; font-weight: 400;
  color: var(--ios-label); white-space: nowrap;
  letter-spacing: -0.41px; flex-shrink: 0; min-width: 90px;
}
.ios-field-input {
  flex: 1; border: none; outline: none; background: transparent;
  font-size: 1.0625rem; font-weight: 400; letter-spacing: -0.41px;
  color: var(--ios-label); min-width: 0;
  text-align: right;
}
.ios-field-input::placeholder { color: var(--ios-label3); }
.ios-field-textarea { align-items: flex-start; padding-top: 13px; padding-bottom: 13px; }
.ios-field-textarea .ios-field-input { text-align: left; resize: none; line-height: 1.47; }
.ios-field-full .ios-field-input { text-align: left; }

/* ── Search Bar ── */
.ios-search-bar {
  display: flex; align-items: center; gap: 8px;
  background: var(--ios-fill3);
  border-radius: 10px; padding: 7px 10px;
  margin: 8px 16px 0;
}
.ios-search-bar i { color: var(--ios-label3); font-size: 0.875rem; }
.ios-search-input {
  flex: 1; border: none; outline: none; background: transparent;
  font-size: 1.0625rem; letter-spacing: -0.41px; color: var(--ios-label);
}
.ios-search-input::placeholder { color: var(--ios-label3); }

/* ── Buttons ── */
.ios-btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px; padding: 0 16px; height: 50px;
  border-radius: var(--ios-radius);
  font-size: 1.0625rem; font-weight: 600; letter-spacing: -0.41px;
  border: none; cursor: pointer;
  transition: opacity 0.15s, transform 0.12s;
}
.ios-btn:active { opacity: 0.7; transform: scale(0.98); }
.ios-btn-full { width: 100%; }
.ios-btn-primary { background: var(--ios-blue); color: #fff; }
.ios-btn-green   { background: var(--ios-green); color: #fff; }
.ios-btn-red     { background: var(--ios-red); color: #fff; }
.ios-btn-tinted  { background: var(--ios-blue-tint); color: var(--ios-blue); }
.ios-btn-gray    { background: var(--ios-fill3); color: var(--ios-label); }
.ios-btn-text    { background: none; border: none; color: var(--ios-blue); font-size: 1.0625rem; font-weight: 400; letter-spacing: -0.41px; cursor: pointer; padding: 8px 0; }
.ios-btn-text:active { opacity: 0.5; }
.ios-btn-destructive { background: rgba(255,59,48,0.10); color: var(--ios-red); }

/* ── iOS Toggle ── */
.ios-toggle { position: relative; width: 51px; height: 31px; flex-shrink: 0; }
.ios-toggle input { opacity: 0; width: 0; height: 0; position: absolute; }
.ios-toggle-track {
  position: absolute; inset: 0;
  background: rgba(120,120,128,0.20);
  border-radius: 999px; cursor: pointer;
  transition: background 0.22s ease;
}
.ios-toggle-track::before {
  content: '';
  position: absolute;
  width: 27px; height: 27px; left: 2px; top: 2px;
  background: #fff; border-radius: 50%;
  box-shadow: 0 2px 8px rgba(0,0,0,0.22), 0 0 0 0.5px rgba(0,0,0,0.04);
  transition: transform 0.22s cubic-bezier(0.4,0,0.2,1);
}
.ios-toggle input:checked + .ios-toggle-track { background: var(--ios-green); }
.ios-toggle input:checked + .ios-toggle-track::before { transform: translateX(20px); }

/* ── Segmented Control ── */
.ios-segmented {
  display: flex; background: var(--ios-fill3);
  border-radius: 9px; padding: 2px;
}
.ios-seg-btn {
  flex: 1; padding: 6px 12px; border-radius: 7px; border: none;
  background: transparent;
  font-size: 0.8125rem; font-weight: 600; letter-spacing: -0.08px;
  color: var(--ios-label); cursor: pointer;
  transition: background 0.2s, box-shadow 0.2s;
}
.ios-seg-btn.active {
  background: var(--ios-surface);
  box-shadow: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.08);
}

/* ── Bottom Sheet ── */
.ios-sheet-overlay {
  display: none; position: fixed; inset: 0; z-index: 900;
  background: rgba(0,0,0,0.40);
  backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
  align-items: flex-end; justify-content: center;
}
.ios-sheet-overlay.open { display: flex; animation: iosSheetBgIn 0.28s ease both; }
@keyframes iosSheetBgIn { from { opacity: 0; } to { opacity: 1; } }
.ios-sheet {
  background: var(--ios-surface);
  border-radius: 20px 20px 0 0;
  padding: 0 0 calc(env(safe-area-inset-bottom, 0px) + 28px);
  width: 100%; max-width: 540px; max-height: 92vh;
  overflow-y: auto; -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  transform: translateY(100%);
  transition: transform 0.40s cubic-bezier(0.32,0.72,0,1);
}
.ios-sheet-overlay.open .ios-sheet { transform: translateY(0); }
.ios-sheet-handle {
  width: 36px; height: 5px;
  background: var(--ios-fill);
  border-radius: 3px; margin: 12px auto 20px;
}

/* ── Alert Banner ── */
.ios-alert {
  padding: 12px 16px; border-radius: var(--ios-radius);
  font-size: 0.9375rem; font-weight: 400;
  display: flex; align-items: flex-start; gap: 10px; line-height: 1.4;
}
.ios-alert-error   { background: rgba(255,59,48,0.10); color: var(--ios-red); }
.ios-alert-success { background: rgba(52,199,89,0.10);  color: #1a7a33; }
.ios-alert-info    { background: rgba(0,122,255,0.10);  color: var(--ios-blue); }
.ios-alert-warn    { background: rgba(255,149,0,0.10);  color: #b06000; }

/* ── Badge ── */
.ios-badge {
  display: inline-flex; align-items: center;
  background: var(--ios-red); color: #fff;
  font-size: 0.6875rem; font-weight: 700; line-height: 1;
  border-radius: 999px; padding: 3px 6px; min-width: 18px;
  justify-content: center;
}

/* ── Utility ── */
.ios-label2-text { color: var(--ios-label2); }
.ios-label3-text { color: var(--ios-label3); }
.ios-blue-text   { color: var(--ios-blue); }
.ios-red-text    { color: var(--ios-red); }
.ios-green-text  { color: var(--ios-green); }
hr.ios-sep { height: 0.5px; background: var(--ios-sep-light); border: none; margin: 0; }

/* ── Solid fallback (no backdrop-filter) ── */
@supports not (backdrop-filter: blur(1px)) {
  .ios-navbar  { background: #F2F2F7; }
  .ios-tabbar  { background: #F9F9F9; }
}

/* ── Samsung / Android: disable backdrop-filter ── */
@media (max-width: 768px) {
  .ios-navbar { backdrop-filter: none !important; -webkit-backdrop-filter: none !important; background: rgba(242,242,247,0.98) !important; }
  .ios-tabbar { backdrop-filter: none !important; -webkit-backdrop-filter: none !important; background: rgba(249,249,249,0.98) !important; }
}

/* ═══════════════════════════════════════════════════════
   iOS UX — Page Transitions & Large Title
   ═══════════════════════════════════════════════════════ */

/* ── Page slide-in (sub-pages: edit, services, media kit) ── */
@keyframes iosSlideIn {
  from { transform: translateX(40px); opacity: 0; }
  to   { transform: translateX(0);    opacity: 1; }
}
.ios-slide-page {
  animation: iosSlideIn 0.32s cubic-bezier(0.32, 0.72, 0, 1) both;
  will-change: transform;
}
.ios-slide-page.ios-slide-enter {
  transform: translateX(40px);
  opacity: 0;
}

/* ── Large Title (collapses to compact on scroll) ── */
.ios-large-title {
  padding: 4px 16px 12px;
  font-size: 2.125rem;
  font-weight: 700;
  letter-spacing: 0.37px;
  line-height: 1.21;
  color: var(--ios-label);
  transition: opacity 0.18s, transform 0.18s;
  transform-origin: left center;
}
.ios-large-title.collapsed {
  opacity: 0;
  transform: scale(0.85) translateY(-8px);
  pointer-events: none;
}

/* Compact title that fades in the nav bar when large title scrolls away */
.ios-navbar-compact-title {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.41px;
  color: var(--ios-label);
  opacity: 0;
  transition: opacity 0.18s;
  pointer-events: none;
  white-space: nowrap;
}
.ios-navbar.title-compact .ios-navbar-compact-title { opacity: 1; }

/* ── Keyboard avoidance ── */
body.keyboard-open .ios-tabbar,
body.keyboard-open .bottom-nav {
  transform: translateY(calc(-1 * var(--keyboard-height, 0px)));
  transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}
body:not(.keyboard-open) .ios-tabbar,
body:not(.keyboard-open) .bottom-nav {
  transform: translateY(0);
  transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Touch feedback refinements ── */
.ios-row-tappable:active,
.ios-tab-item:active,
button:active { -webkit-tap-highlight-color: transparent; }

/* ── Scroll rubber-band feel ── */
html, body {
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-y: auto;
}