/* =============================================================
   Ultramar Analysis — Apple-flavored design system
   Token-driven CSS. See import/DESIGN-apple.md for the source.
   Inter is loaded via Google Fonts as the SF Pro substitute.
   ============================================================= */

:root {
  /* Colors */
  --color-primary:          #0066cc;
  --color-primary-focus:    #0071e3;
  --color-primary-on-dark:  #2997ff;
  --color-ink:              #1d1d1f;
  --color-ink-muted-80:     #333333;
  --color-ink-muted-48:     #7a7a7a;
  --color-canvas:           #ffffff;
  --color-parchment:        #f5f5f7;
  --color-pearl:            #fafafc;
  --color-tile-1:           #272729;
  --color-tile-2:           #2a2a2c;
  --color-tile-3:           #252527;
  --color-black:            #000000;
  --color-divider-soft:     #f0f0f0;
  --color-hairline:         #e0e0e0;
  --color-on-primary:       #ffffff;
  --color-on-dark:          #ffffff;
  --color-body-muted:       #cccccc;

  /* Status (kept from prior usage; Apple system has no native error/warn token) */
  --color-success:          #16a34a;
  --color-success-bg:       #ecfdf5;
  --color-warning:          #d97706;
  --color-warning-bg:       #fef3c7;
  --color-warning-bg-soft:  #fffbeb;
  --color-danger:           #dc2626;
  --color-danger-bg:        #fef2f2;

  /* Typography stack — Inter as SF Pro substitute */
  --font-display: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-text:    "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;

  /* Radius */
  --r-none:  0;
  --r-xs:    5px;
  --r-sm:    8px;
  --r-md:    11px;
  --r-lg:    18px;
  --r-pill:  9999px;

  /* Spacing */
  --s-xxs: 4px;
  --s-xs:  8px;
  --s-sm:  12px;
  --s-md:  17px;
  --s-lg:  24px;
  --s-xl:  32px;
  --s-xxl: 48px;
  --s-section: 80px;

  /* The single drop-shadow in the system, reserved for product/hero imagery. */
  --shadow-product: 3px 5px 30px rgba(0, 0, 0, 0.22);

  /* Layout */
  --container-max: 1440px;
  --content-max:   1080px;
  --content-narrow: 460px;

  /* Frosted */
  --frost-bg: rgba(245, 245, 247, 0.8);
}

/* =============================================================
   Reset (since Pico CSS is no longer loaded)
   ============================================================= */

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

html, body {
  margin: 0;
  padding: 0;
  background: var(--color-canvas);
  color: var(--color-ink);
  font-family: var(--font-text);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.44;            /* Inter substitution: tightened from 1.47 */
  letter-spacing: -0.374px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

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

hr {
  border: 0;
  border-top: 1px solid var(--color-divider-soft);
  margin: var(--s-lg) 0;
}

/* =============================================================
   Typography
   Apple ladder: 300 / 400 / 600 / 700 (no weight 500).
   Negative letter-spacing on all display sizes (Apple-tight).
   ============================================================= */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  color: var(--color-ink);
  font-weight: 600;
  margin: 0 0 var(--s-md) 0;
  letter-spacing: -0.01em;       /* Inter substitution nudge */
}

h1 { font-size: 56px; line-height: 1.07; letter-spacing: -0.02em; }
h2 { font-size: 40px; line-height: 1.10; }
h3 { font-size: 28px; line-height: 1.20; }
h4 { font-size: 21px; line-height: 1.19; font-weight: 600; }
h5 { font-size: 17px; line-height: 1.24; font-weight: 600; }
h6 { font-size: 14px; line-height: 1.29; font-weight: 600; letter-spacing: -0.224px; }

p { margin: 0 0 var(--s-md) 0; }

small {
  font-size: 12px;
  line-height: 1.0;
  letter-spacing: -0.12px;
  color: var(--color-ink-muted-48);
}

strong, b { font-weight: 600; }

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: opacity 0.15s ease;
}
a:hover { opacity: 0.7; }
a:focus-visible {
  outline: 2px solid var(--color-primary-focus);
  outline-offset: 2px;
  border-radius: var(--r-xs);
}

/* On dark backgrounds, links shift to Sky Link Blue. */
.tile-dark a,
.global-nav a {
  color: var(--color-primary-on-dark);
}

/* Lead paragraph (used under a hero h2) */
.lead {
  font-size: 21px;
  font-weight: 400;
  line-height: 1.29;
  letter-spacing: 0.01em;
  color: var(--color-ink-muted-80);
  margin-bottom: var(--s-lg);
}

/* Tagline — sits under section headings */
.tagline {
  font-size: 21px;
  font-weight: 600;
  line-height: 1.19;
  letter-spacing: 0.01em;
  color: var(--color-ink);
  margin: 0 0 var(--s-md) 0;
}

.muted { color: var(--color-ink-muted-48); }
.caption { font-size: 14px; line-height: 1.43; letter-spacing: -0.224px; }
.fine-print { font-size: 12px; line-height: 1.0; letter-spacing: -0.12px; color: var(--color-ink-muted-48); }

/* =============================================================
   Layout primitives
   ============================================================= */

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

.content {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: var(--s-xl) var(--s-lg);
}

main {
  min-height: calc(100vh - 44px - 52px - 200px);  /* nav + sub-nav + footer */
  padding-top: var(--s-xl);
  padding-bottom: var(--s-xxl);
}

main.content { padding-top: var(--s-xl); padding-bottom: var(--s-xxl); }

.row { display: flex; gap: var(--s-md); align-items: center; flex-wrap: wrap; }
.row-end { display: flex; gap: var(--s-sm); align-items: flex-end; flex-wrap: wrap; }
.stack { display: flex; flex-direction: column; gap: var(--s-md); }

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-md);
  align-items: end;
}
@media (max-width: 640px) {
  .grid-2 { grid-template-columns: 1fr; }
}

/* When an input/select sits inside a grid cell paired with a submit
   button, drop its trailing margin so both controls share a baseline. */
.grid-2 > div > input,
.grid-2 > div > select,
.grid-2 > div > textarea,
.row-end > * { margin-bottom: 0; }
.row-end button,
.row-end .btn,
.row-end a.btn-primary,
.row-end a.btn-secondary-pill { margin: 0; }

/* Inline form: a flexible field + a submit button on the same baseline. */
.form-row {
  display: flex;
  gap: var(--s-md);
  align-items: end;
  flex-wrap: wrap;
}
.form-row > div { flex: 1 1 280px; min-width: 0; }
.form-row > div input,
.form-row > div select,
.form-row > div textarea { margin-bottom: 0; }
.form-row > button,
.form-row > .btn { flex: 0 0 auto; margin: 0; }

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--s-md);
}
@media (max-width: 1068px) { .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 640px)  { .grid-4 { grid-template-columns: 1fr; } }

/* =============================================================
   Global nav (44px black bar)
   ============================================================= */

.global-nav {
  background: var(--color-black);
  color: var(--color-on-dark);
  height: 44px;
  font-size: 12px;
  letter-spacing: -0.12px;
  position: sticky;
  top: 0;
  z-index: 50;
}

.global-nav-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--s-lg);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-lg);
}

.global-nav-brand {
  font-weight: 600;
  font-size: 14px;
  letter-spacing: -0.01em;
  color: var(--color-on-dark);
}

.global-nav-links {
  display: flex;
  align-items: center;
  gap: var(--s-lg);
  list-style: none;
  margin: 0;
  padding: 0;
}

.global-nav-links a {
  color: var(--color-on-dark);
  font-size: 12px;
  letter-spacing: -0.12px;
  opacity: 0.88;
}
.global-nav-links a:hover { opacity: 1; }

@media (max-width: 833px) {
  .global-nav-links { gap: var(--s-md); }
  .global-nav-links .nav-secondary { display: none; }
}

/* =============================================================
   Sub-nav (52px parchment frosted bar)
   ============================================================= */

.sub-nav {
  background: var(--frost-bg);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
          backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--color-divider-soft);
  height: 52px;
  position: sticky;
  top: 44px;
  z-index: 49;
}

.sub-nav-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--s-lg);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-lg);
}

.sub-nav-title {
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--color-ink);
}

.sub-nav-links {
  display: flex;
  align-items: center;
  gap: var(--s-md);
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 14px;
}

.sub-nav-links a {
  color: var(--color-ink-muted-80);
  font-size: 14px;
  letter-spacing: -0.224px;
}
.sub-nav-links a:hover { color: var(--color-primary); opacity: 1; }
.sub-nav-links a.active { color: var(--color-ink); font-weight: 600; }

@media (max-width: 640px) {
  .sub-nav-links { gap: var(--s-sm); font-size: 13px; }
}

/* =============================================================
   Buttons
   The Apple system has two grammars: pill primaries and
   compact utility rects. Active state is always scale(0.95).
   ============================================================= */

button,
.btn,
[role="button"] {
  font-family: var(--font-text);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.0;
  letter-spacing: -0.01em;
  border: 1px solid transparent;
  border-radius: var(--r-pill);
  padding: 11px 22px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-xs);
  transition: transform 0.15s ease, opacity 0.15s ease, background 0.15s ease;
  text-decoration: none;
  white-space: nowrap;
}

button,
.btn-primary,
.btn[type="submit"] {
  background: var(--color-primary);
  color: var(--color-on-primary);
  border-color: var(--color-primary);
}
button:hover,
.btn-primary:hover { opacity: 0.88; }
button:active,
.btn-primary:active { transform: scale(0.95); }
button:focus-visible,
.btn-primary:focus-visible {
  outline: 2px solid var(--color-primary-focus);
  outline-offset: 2px;
}
button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
}

.btn-secondary-pill {
  background: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}
.btn-secondary-pill:hover { background: rgba(0, 102, 204, 0.06); opacity: 1; }

.btn-dark-utility {
  background: var(--color-ink);
  color: var(--color-on-dark);
  border-color: var(--color-ink);
  border-radius: var(--r-sm);
  font-size: 14px;
  letter-spacing: -0.224px;
  padding: 8px 15px;
}
.btn-dark-utility:hover { opacity: 0.85; }

.btn-pearl-capsule {
  background: var(--color-pearl);
  color: var(--color-ink-muted-80);
  border: 1px solid var(--color-divider-soft);
  border-radius: var(--r-md);
  font-size: 14px;
  letter-spacing: -0.224px;
  padding: 8px 14px;
}
.btn-pearl-capsule:hover { background: var(--color-canvas); }

.btn-success {
  background: var(--color-success);
  border-color: var(--color-success);
  color: #fff;
}
.btn-success:hover { opacity: 0.9; }

.btn-danger {
  background: transparent;
  color: var(--color-danger);
  border: 1px solid var(--color-danger);
  border-radius: var(--r-sm);
  font-size: 13px;
  padding: 6px 12px;
}
.btn-danger:hover { background: var(--color-danger); color: #fff; opacity: 1; }

.btn-ghost {
  background: transparent;
  color: var(--color-ink-muted-80);
  border: 1px solid var(--color-hairline);
  border-radius: var(--r-sm);
  font-size: 13px;
  padding: 6px 12px;
}
.btn-ghost:hover { background: var(--color-parchment); }

.btn-icon-close {
  background: transparent;
  color: var(--color-ink-muted-48);
  border: none;
  border-radius: var(--r-pill);
  width: 32px;
  height: 32px;
  padding: 0;
  font-size: 22px;
  line-height: 1;
}
.btn-icon-close:hover { background: var(--color-divider-soft); color: var(--color-ink); opacity: 1; }

.btn-block { width: 100%; }
.btn-large { font-size: 18px; font-weight: 300; padding: 14px 28px; }

/* When an <a> uses class="btn-..." */
a.btn-primary,
a.btn-secondary-pill,
a.btn-dark-utility,
a.btn-pearl-capsule {
  text-decoration: none;
}

/* =============================================================
   Forms
   ============================================================= */

form { margin: 0; }

label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.224px;
  color: var(--color-ink);
  margin-bottom: var(--s-xs);
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="search"],
input[type="file"],
select,
textarea {
  font-family: var(--font-text);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.4;
  letter-spacing: -0.374px;
  color: var(--color-ink);
  background: var(--color-canvas);
  border: 1px solid var(--color-hairline);
  border-radius: var(--r-sm);
  padding: 10px 14px;
  width: 100%;
  margin-bottom: var(--s-md);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

input[type="file"] {
  padding: 8px 10px;
  background: var(--color-pearl);
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-primary-focus);
  box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.15);
}

input[type="search"] {
  border-radius: var(--r-pill);
  padding: 12px 20px;
  height: 44px;
}

select {
  appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'><path fill='%231d1d1f' d='M6 8L0 0h12z'/></svg>");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
}

progress {
  width: 100%;
  height: 6px;
  border: none;
  border-radius: var(--r-pill);
  background: var(--color-divider-soft);
  overflow: hidden;
  margin: var(--s-md) 0;
  appearance: none;
}
progress::-webkit-progress-bar { background: var(--color-divider-soft); border-radius: var(--r-pill); }
progress::-webkit-progress-value { background: var(--color-primary); border-radius: var(--r-pill); transition: width 0.3s ease; }
progress::-moz-progress-bar { background: var(--color-primary); border-radius: var(--r-pill); }

/* =============================================================
   Cards & Tiles
   Hero/auth pages get the airy tile treatment.
   Dense admin pages use the utility-card with 24px padding.
   ============================================================= */

.tile-light,
.tile-parchment,
.tile-dark {
  border-radius: var(--r-none);
  padding: var(--s-section) var(--s-lg);
  text-align: center;
}

.tile-light     { background: var(--color-canvas);    color: var(--color-ink); }
.tile-parchment { background: var(--color-parchment); color: var(--color-ink); }
.tile-dark      { background: var(--color-tile-1);    color: var(--color-on-dark); }
.tile-dark h1, .tile-dark h2, .tile-dark h3, .tile-dark h4, .tile-dark h5, .tile-dark h6 { color: var(--color-on-dark); }

.tile-narrow {
  max-width: var(--content-narrow);
  margin: 0 auto;
  text-align: left;
}

.utility-card {
  background: var(--color-canvas);
  border: 1px solid var(--color-hairline);
  border-radius: var(--r-lg);
  padding: var(--s-lg);
  margin-bottom: var(--s-md);
}

.utility-card-pearl {
  background: var(--color-pearl);
}

/* Headers inside utility cards stay calm */
.utility-card h2,
.utility-card h3 { font-size: 21px; line-height: 1.24; margin-bottom: var(--s-sm); }

/* Auth tile (login, change_password) */
.auth-tile {
  background: var(--color-canvas);
  border: 1px solid var(--color-hairline);
  border-radius: var(--r-lg);
  padding: var(--s-xl) var(--s-xl);
  max-width: var(--content-narrow);
  margin: var(--s-xxl) auto;
}

.auth-tile h2 { font-size: 32px; line-height: 1.1; margin-bottom: var(--s-xs); }
.auth-tile .lead { font-size: 17px; margin-bottom: var(--s-lg); }

/* =============================================================
   Chips & status badges
   ============================================================= */

.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--s-xxs);
  background: var(--color-canvas);
  color: var(--color-ink-muted-80);
  border: 1px solid var(--color-hairline);
  border-radius: var(--r-pill);
  padding: 4px 10px;
  font-size: 13px;
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.224px;
  white-space: nowrap;
}
.chip-success { color: var(--color-success); border-color: rgba(22, 163, 74, 0.3); background: var(--color-success-bg); }
.chip-warning { color: var(--color-warning); border-color: rgba(217, 119, 6, 0.3);  background: #fff7e6; }
.chip-muted   { color: var(--color-ink-muted-48); }

/* =============================================================
   Banners (notices, errors, temp-password)
   ============================================================= */

.banner {
  border-radius: var(--r-md);
  padding: var(--s-md) var(--s-lg);
  margin: var(--s-md) 0;
  border: 1px solid var(--color-hairline);
  font-size: 15px;
  line-height: 1.4;
}

.banner-success { background: var(--color-success-bg); border-color: rgba(22, 163, 74, 0.25); color: #14532d; }
.banner-error   { background: var(--color-danger-bg);  border-color: rgba(220, 38, 38, 0.25);  color: #7f1d1d; }
.banner-warning { background: var(--color-warning-bg); border-color: rgba(217, 119, 6, 0.3);   color: #78350f; }

.banner pre {
  background: var(--color-warning-bg-soft);
  border: 1px solid rgba(217, 119, 6, 0.3);
  border-radius: var(--r-sm);
  padding: var(--s-sm);
  margin: var(--s-xs) 0 var(--s-xs);
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 14px;
  user-select: all;
}

.error-text { color: var(--color-danger); }
.success-text { color: var(--color-success); }
.warning-text { color: var(--color-warning); }

/* =============================================================
   Tables
   Hairline-bordered, tight, scannable. Apple's grid card aesthetic
   adapted for tabular data.
   ============================================================= */

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
  background: var(--color-canvas);
  margin: var(--s-md) 0 var(--s-lg);
  border: 1px solid var(--color-hairline);
  border-radius: var(--r-lg);
  overflow: hidden;
}

th, td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--color-divider-soft);
  vertical-align: middle;
}

th {
  background: var(--color-parchment);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: -0.224px;
  color: var(--color-ink-muted-80);
  text-transform: none;
}

tbody tr:last-child td { border-bottom: none; }

tbody tr:hover { background: var(--color-pearl); }

figure {
  margin: 0 0 var(--s-md);
  overflow-x: auto;
}

/* =============================================================
   Footer (parchment, dense link layout)
   ============================================================= */

footer.site-footer {
  background: var(--color-parchment);
  color: var(--color-ink-muted-80);
  padding: var(--s-xxl) var(--s-lg);
  margin-top: var(--s-xxl);
  border-top: 1px solid var(--color-divider-soft);
}

footer.site-footer .footer-inner {
  max-width: var(--container-max);
  margin: 0 auto;
}

footer.site-footer small,
footer.site-footer p {
  font-size: 12px;
  line-height: 1.5;
  letter-spacing: -0.12px;
  color: var(--color-ink-muted-48);
  margin: 0;
}

/* =============================================================
   Utilities
   ============================================================= */

.text-center { text-align: center; }
.text-right  { text-align: right; }
.mt-0  { margin-top: 0; }
.mt-sm { margin-top: var(--s-sm); }
.mt-md { margin-top: var(--s-md); }
.mt-lg { margin-top: var(--s-lg); }
.mt-xl { margin-top: var(--s-xl); }
.mb-0  { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--s-sm); }
.mb-md { margin-bottom: var(--s-md); }
.mb-lg { margin-bottom: var(--s-lg); }
.w-auto { width: auto; }
.hidden { display: none !important; }

/* Inline action group (form rows with submit + cancel) */
.actions {
  display: flex;
  gap: var(--s-sm);
  align-items: center;
  flex-wrap: wrap;
  margin-top: var(--s-md);
}
.actions form { display: inline; margin: 0; }

/* Email preview shell (inline iframe under the day-tab chips) */
.preview-tab-active {
  background: var(--color-canvas);
  color: var(--color-ink);
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(0, 113, 227, 0.18);
}
.preview-shell {
  border: 1px solid var(--color-hairline);
  border-radius: var(--r-lg);
  background: var(--color-canvas);
  overflow: hidden;
}
.preview-shell-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--s-sm) var(--s-md);
  border-bottom: 1px solid var(--color-divider-soft);
  background: var(--color-parchment);
}
.preview-shell iframe {
  width: 100%;
  height: 720px;
  border: 0;
  display: block;
  background: var(--color-canvas);
}
@media (max-width: 833px) {
  .preview-shell iframe { height: 560px; }
}

/* Section heading + sub-text */
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: var(--s-sm);
  margin: var(--s-xl) 0 var(--s-md);
}
.section-head h3 { margin: 0; font-size: 28px; line-height: 1.2; }
.section-head .lead-sub { color: var(--color-ink-muted-48); font-size: 15px; }

/* Responsive type scaling per the design doc */
@media (max-width: 1068px) {
  h1 { font-size: 40px; }
  h2 { font-size: 32px; }
}
@media (max-width: 640px) {
  h1 { font-size: 34px; }
  h2 { font-size: 28px; }
  h3 { font-size: 22px; }
  .tile-light, .tile-parchment, .tile-dark { padding: var(--s-xxl) var(--s-md); }
  .auth-tile { padding: var(--s-lg) var(--s-md); margin: var(--s-lg) auto; }
}
@media (max-width: 419px) {
  h1 { font-size: 28px; }
  h2 { font-size: 24px; }
}