/* LinkedIn Profile Optimizer — stylesheet, white-labeled for Kaizin.
   See docs/brandbook.md for the design system this implements. */

:root {
  /* Color — Kaizin brand */
  --color-primary: #9b1dd6;
  --color-primary-light: #c51fe2;
  --color-primary-dark: #7c17ab;
  --color-teal: #00d1b5;
  --color-near-black: #0F0F0F;
  --color-navy: #1C274C;
  --color-ink: #0F172A;
  --color-ink-muted: #475569;
  --color-ink-faint: #94A3B8;
  --color-bg: #F7F9FC;
  --color-surface: #FFFFFF;
  --color-border: #E2E8F0;
  --color-success: #16A34A;
  --color-warning: #D97706;
  --color-danger: #DC2626;
  --color-success-bg: #F0FDF4;
  --color-warning-bg: #FFFBEB;
  --color-danger-bg: #FEF2F2;

  /* Type */
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --fs-xs: .75rem;
  --fs-sm: .875rem;
  --fs-base: 1rem;
  --fs-lg: 1.125rem;
  --fs-xl: 1.5rem;
  --fs-2xl: 2rem;
  --fs-3xl: 2.75rem;
  --fs-hero: 4.5rem;

  /* Spacing */
  --space-1: .5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 2.5rem;
  --space-6: 3rem;
  --space-8: 4rem;

  /* Layout */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  --shadow-card: 0 1px 3px rgba(15,23,42,.06), 0 1px 2px rgba(15,23,42,.08);
  --max-form: 720px;
  --max-results: 960px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-weight: 700;
  color: var(--color-ink);
  margin: 0 0 var(--space-2);
}

a {
  color: var(--color-primary);
}

:focus-visible {
  outline: 3px solid rgba(155,29,214,.35);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

.container {
  max-width: var(--max-form);
  margin: 0 auto;
  padding: 0 var(--space-3);
}

.container--wide {
  max-width: var(--max-results);
}

/* Header — dark bar hosting the Kaizin logo (white-ink wordmark, dark-bg only) */
.site-header {
  padding: var(--space-2) 0;
  background: var(--color-near-black);
  background: linear-gradient(120deg, var(--color-near-black), var(--color-navy));
  border-bottom: 3px solid transparent;
  border-image: linear-gradient(90deg, var(--color-primary), var(--color-teal)) 1;
}

.wordmark {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: #fff;
  padding: .35rem 0;
}

.wordmark__logo {
  height: 28px;
  width: auto;
  display: block;
}

.wordmark__divider {
  width: 1px;
  height: 22px;
  background: rgba(255,255,255,.25);
  display: none;
}

.wordmark__product {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: rgba(255,255,255,.85);
  display: none;
}

@media (min-width: 560px) {
  .wordmark__divider,
  .wordmark__product {
    display: block;
  }
}

main {
  padding: var(--space-6) 0 var(--space-8);
}

.site-footer {
  padding: var(--space-4) 0;
  text-align: center;
  color: var(--color-ink-faint);
  font-size: var(--fs-xs);
}

/* Hero / intro */
.hero {
  text-align: center;
  margin-bottom: var(--space-5);
}

.hero h1 {
  font-size: var(--fs-3xl);
}

.hero p {
  color: var(--color-ink-muted);
  font-size: var(--fs-lg);
  max-width: 560px;
  margin: 0 auto;
}

/* Card */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border);
  padding: var(--space-4);
}

@media (min-width: 720px) {
  .card { padding: var(--space-6); }
}

/* Form */
.field {
  margin-bottom: var(--space-3);
}

.field label,
.field legend {
  display: block;
  font-weight: 600;
  font-size: var(--fs-sm);
  color: var(--color-ink);
  margin-bottom: .5rem;
  padding: 0;
}

.field .field__hint {
  font-size: var(--fs-xs);
  color: var(--color-ink-faint);
  font-weight: 400;
  margin-top: .25rem;
}

.field fieldset {
  border: none;
  margin: 0;
  padding: 0;
}

input[type="text"],
input[type="url"],
input[type="email"] {
  width: 100%;
  font: inherit;
  padding: .75rem var(--space-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-ink);
  transition: border-color .15s ease, box-shadow .15s ease;
}

input[type="text"]::placeholder,
input[type="url"]::placeholder,
input[type="email"]::placeholder {
  color: var(--color-ink-faint);
}

input[type="text"]:focus,
input[type="url"]:focus,
input[type="email"]:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(155,29,214,.15);
}

input:invalid[data-touched="true"] {
  border-color: var(--color-danger);
}

.field-error {
  color: var(--color-danger);
  font-size: var(--fs-xs);
  margin-top: .35rem;
  display: none;
}

.field-error.is-visible { display: block; }

.row-2col {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
}

@media (min-width: 720px) {
  .row-2col { grid-template-columns: 1fr 1fr; }
}

/* Radio pills for intent */
.radio-pills {
  display: grid;
  grid-template-columns: 1fr;
  gap: .5rem;
}

@media (min-width: 720px) {
  .radio-pills { grid-template-columns: repeat(3, 1fr); }
}

.radio-pill {
  position: relative;
}

.radio-pill input {
  position: absolute;
  opacity: 0;
  inset: 0;
  cursor: pointer;
  margin: 0;
}

.radio-pill span {
  display: block;
  text-align: center;
  padding: .85rem var(--space-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: var(--fs-sm);
  color: var(--color-ink-muted);
  background: var(--color-surface);
  transition: all .15s ease;
}

.radio-pill input:checked + span {
  border-color: var(--color-primary);
  background: rgba(155,29,214,.06);
  color: var(--color-primary);
}

.radio-pill input:focus-visible + span {
  outline: 3px solid rgba(155,29,214,.35);
  outline-offset: 2px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  font: inherit;
  font-weight: 700;
  font-size: var(--fs-base);
  padding: .9rem var(--space-3);
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: background-color .15s ease, transform .05s ease;
  width: 100%;
}

@media (min-width: 720px) {
  .btn { width: auto; }
}

.btn-primary {
  background: linear-gradient(120deg, var(--color-primary), var(--color-primary-light));
  color: #fff;
}

.btn-primary:hover { background: linear-gradient(120deg, var(--color-primary-dark), var(--color-primary)); }
.btn-primary:active { transform: translateY(1px); }

.btn-primary:disabled {
  opacity: .5;
  cursor: not-allowed;
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-primary);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover { background: var(--color-bg); }

.btn-block { width: 100%; margin-top: var(--space-2); }

/* Loading state */
.loading-panel {
  text-align: center;
  padding: var(--space-6) var(--space-3);
}

.loading-panel .spinner-ring {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-3);
  border-radius: 50%;
  border: 4px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-right-color: var(--color-teal);
  animation: spin 1s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.loading-panel h2 {
  font-size: var(--fs-xl);
  margin-bottom: .25rem;
}

.loading-status {
  color: var(--color-ink-muted);
  min-height: 1.6em;
  font-weight: 600;
}

.progress-track {
  width: 100%;
  max-width: 420px;
  height: 8px;
  margin: var(--space-3) auto 0;
  background: var(--color-border);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: 4%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-teal));
  border-radius: var(--radius-full);
  transition: width 1.5s ease;
}

.loading-steps {
  list-style: none;
  padding: 0;
  margin: var(--space-4) auto 0;
  max-width: 380px;
  text-align: left;
  display: grid;
  gap: .5rem;
}

.loading-steps li {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-size: var(--fs-sm);
  color: var(--color-ink-faint);
}

.loading-steps li.is-active { color: var(--color-ink); font-weight: 600; }
.loading-steps li.is-done { color: var(--color-success); }

.loading-steps .step-icon {
  width: 18px;
  height: 18px;
  flex: none;
}

/* Banners */
.banner {
  display: flex;
  gap: .75rem;
  align-items: flex-start;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  border-left: 4px solid;
  margin-bottom: var(--space-3);
  font-size: var(--fs-sm);
}

.banner__icon { flex: none; width: 20px; height: 20px; margin-top: 1px; }

.banner--warning {
  background: var(--color-warning-bg);
  border-color: var(--color-warning);
  color: #92400E;
}

.banner--error {
  background: var(--color-danger-bg);
  border-color: var(--color-danger);
  color: #991B1B;
}

.banner strong { display: block; margin-bottom: .15rem; }

.banner .btn-secondary {
  margin-top: .5rem;
  width: auto;
}

/* Completion state ("check your inbox") — replaces on-page results */
.complete-panel {
  text-align: center;
  padding: var(--space-6) var(--space-3);
}

.complete-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto var(--space-3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(155,29,214,.12), rgba(0,209,181,.12));
  color: var(--color-primary);
}

.complete-icon svg { width: 40px; height: 40px; }

.complete-panel h2 {
  font-size: var(--fs-xl);
  margin-bottom: var(--space-2);
}

.complete-message {
  color: var(--color-ink);
  font-size: var(--fs-lg);
  max-width: 480px;
  margin: 0 auto;
}

.complete-message strong {
  color: var(--color-primary);
}

.complete-submessage {
  color: var(--color-ink-muted);
  font-size: var(--fs-sm);
  margin-top: var(--space-2);
}

.results-actions {
  text-align: center;
  margin-top: var(--space-5);
}

.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;
}

[hidden] { display: none !important; }