/* Publio — Design System
   Linear/Vercel-inspired: near-black on white, system typography, one accent color.
   Accent: #0A66C2 (LinkedIn blue — reinforces brand context for target audience)
   ────────────────────────────────────────────────────── */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/* ─── Custom Properties ─────────────────────────── */
:root {
  --color-bg:           #ffffff;
  --color-bg-subtle:    #f9fafb;
  --color-bg-muted:     #f3f4f6;
  --color-border:       #e5e7eb;
  --color-border-strong:#d1d5db;

  --color-text:         #111827;
  --color-text-secondary: #6b7280;
  --color-text-muted:   #9ca3af;

  --color-accent:       #0A66C2;
  --color-accent-hover: #0958a8;
  --color-accent-subtle:#eff6ff;

  --color-success-bg:   #f0fdf4;
  --color-success-text: #166534;
  --color-success-border: #bbf7d0;

  --color-warning-bg:   #fffbeb;
  --color-warning-text: #92400e;
  --color-warning-border: #fde68a;

  --color-danger-bg:    #fef2f2;
  --color-danger-text:  #991b1b;
  --color-danger-border: #fecaca;

  --color-info-bg:      #eff6ff;
  --color-info-text:    #1e40af;
  --color-info-border:  #bfdbfe;

  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  12px;
  --radius-pill: 999px;

  --shadow-sm:  0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md:  0 4px 6px -1px rgb(0 0 0 / 0.07), 0 2px 4px -2px rgb(0 0 0 / 0.05);

  --font-sans:  'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono:  'SF Mono', 'Fira Code', 'Cascadia Code', monospace;

  --max-w-content: 1080px;
  --max-w-narrow:  680px;
  --max-w-form:    420px;
}

/* ─── Accessibility Utility ──────────────────────── */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ─── Reset ─────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }
input, textarea, select { font-family: inherit; }

a {
  color: var(--color-accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

/* ─── Skip Link (Accessibility) ─────────────────── */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-accent);
  color: #fff;
  padding: 8px 16px;
  z-index: 9999;
  border-radius: 0 0 var(--radius-sm) 0;
  font-weight: 600;
  transition: top 0.2s;
}
.skip-link:focus {
  top: 0;
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

/* ─── Header / Nav ───────────────────────────────── */
.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-inner {
  max-width: var(--max-w-content);
  margin: 0 auto;
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
  text-decoration: none;
  flex-shrink: 0;
}
.brand:hover {
  color: var(--color-accent);
  text-decoration: none;
}

/* Nav logo image */
.nav-brand {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  text-decoration: none;
}
.nav-brand:hover {
  text-decoration: none;
}
.nav-logo {
  height: 32px;
  width: auto;
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}
.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: color 0.15s, background 0.15s;
  text-decoration: none;
}
.nav-links a:hover {
  color: var(--color-text);
  background: var(--color-bg-muted);
  text-decoration: none;
}
.nav-links a.btn-nav-cta {
  color: #fff;
  background: var(--color-accent);
  padding: 6px 16px;
}
.nav-links a.btn-nav-cta:hover {
  background: var(--color-accent-hover);
  color: #fff;
}

/* ─── Footer ─────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--color-border);
  margin-top: auto;
  padding: 32px 24px;
}
.footer-inner {
  max-width: var(--max-w-content);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}
.footer-links {
  display: flex;
  gap: 20px;
  list-style: none;
}
.footer-links a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color 0.15s;
}
.footer-links a:hover {
  color: var(--color-text);
  text-decoration: none;
}

/* ─── Page Layout ────────────────────────────────── */
.page-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

main {
  flex: 1;
}

/* ─── Buttons ────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 18px;
  font-size: 0.9rem;
  font-weight: 500;
  line-height: 1;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s, border-color 0.15s, color 0.15s, box-shadow 0.15s;
  white-space: nowrap;
  -webkit-user-select: none;
  user-select: none;
}
.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}
.btn-primary:hover:not(:disabled) {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  text-decoration: none;
  color: #fff;
}

.btn-secondary {
  background: var(--color-bg);
  color: var(--color-text);
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-sm);
}
.btn-secondary:hover:not(:disabled) {
  background: var(--color-bg-subtle);
  text-decoration: none;
  color: var(--color-text);
}

.btn-danger {
  background: var(--color-danger-bg);
  color: var(--color-danger-text);
  border-color: var(--color-danger-border);
}
.btn-danger:hover:not(:disabled) {
  background: #fca5a5;
  text-decoration: none;
  color: var(--color-danger-text);
}

.btn-sm {
  padding: 5px 12px;
  font-size: 0.8125rem;
}

.btn-lg {
  padding: 13px 28px;
  font-size: 1rem;
  border-radius: var(--radius-md);
}

/* ─── Cards ──────────────────────────────────────── */
.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
}

.card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.card-header h2 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
}
.card-header p {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-top: 2px;
}

/* ─── Alerts / Flash messages ────────────────────── */
.alert {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  margin-bottom: 16px;
  border: 1px solid;
  line-height: 1.5;
}
.alert-success {
  background: var(--color-success-bg);
  color: var(--color-success-text);
  border-color: var(--color-success-border);
}
.alert-error {
  background: var(--color-danger-bg);
  color: var(--color-danger-text);
  border-color: var(--color-danger-border);
}
.alert-info {
  background: var(--color-info-bg);
  color: var(--color-info-text);
  border-color: var(--color-info-border);
}
.alert-warning {
  background: var(--color-warning-bg);
  color: var(--color-warning-text);
  border-color: var(--color-warning-border);
}

/* ─── Badges ─────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 1px solid;
}
.badge-healthy {
  background: var(--color-success-bg);
  color: var(--color-success-text);
  border-color: var(--color-success-border);
}
.badge-expiring_soon {
  background: var(--color-warning-bg);
  color: var(--color-warning-text);
  border-color: var(--color-warning-border);
}
.badge-expired {
  background: var(--color-danger-bg);
  color: var(--color-danger-text);
  border-color: var(--color-danger-border);
}
.badge-free {
  background: var(--color-bg-muted);
  color: var(--color-text-secondary);
  border-color: var(--color-border);
}
.badge-starter {
  background: #f0f9ff;
  color: #0369a1;
  border-color: #bae6fd;
}

/* ─── Forms ──────────────────────────────────────── */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}

label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
}

input[type="text"],
input[type="email"],
input[type="password"] {
  padding: 9px 12px;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  color: var(--color-text);
  background: var(--color-bg);
  transition: border-color 0.15s, box-shadow 0.15s;
  width: 100%;
}
input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(10, 102, 194, 0.12);
}
input::placeholder {
  color: var(--color-text-muted);
}

.form-row {
  display: flex;
  gap: 10px;
  align-items: flex-end;
  flex-wrap: wrap;
}
.form-row input {
  flex: 1;
  min-width: 200px;
}

/* ─── Tables ─────────────────────────────────────── */
.table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
}
table {
  width: 100%;
  border-collapse: collapse;
}
thead {
  background: var(--color-bg-subtle);
}
th {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-align: left;
  padding: 10px 16px;
  border-bottom: 1px solid var(--color-border);
  letter-spacing: 0.03em;
  text-transform: uppercase;
}
td {
  font-size: 0.875rem;
  color: var(--color-text);
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
  vertical-align: middle;
}
tbody tr:last-child td {
  border-bottom: none;
}
tbody tr:hover {
  background: var(--color-bg-subtle);
}

code {
  background: var(--color-bg-muted);
  border: 1px solid var(--color-border);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--color-text);
}

/* ─── Key reveal box ─────────────────────────────── */
.key-reveal {
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-success-border);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-top: 12px;
}
.key-reveal p {
  font-size: 0.875rem;
  color: var(--color-success-text);
  margin-bottom: 10px;
  font-weight: 500;
}
.key-reveal-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.key-value {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  flex: 1;
  word-break: break-all;
  color: var(--color-text);
}

/* ─── Landing Page ───────────────────────────────── */
.landing-hero {
  text-align: center;
  padding: 96px 24px 80px;
  max-width: var(--max-w-narrow);
  margin: 0 auto;
}
.hero-label {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-accent);
  background: var(--color-accent-subtle);
  border: 1px solid #bfdbfe;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: 20px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}
.landing-hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--color-text);
  margin-bottom: 16px;
}
.landing-hero p {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  max-width: 480px;
  margin: 0 auto 32px;
  line-height: 1.65;
}
.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}
.hero-note {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-top: 16px;
}

/* Hero logo image */
.hero-logo {
  height: 140px;
  width: auto;
  display: block;
  margin: 0 auto 24px;
}

/* ─── How It Works ───────────────────────────────── */
.section-how {
  padding: 64px 24px;
  background: var(--color-bg-subtle);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.section-inner {
  max-width: var(--max-w-content);
  margin: 0 auto;
}
.section-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 48px;
  color: var(--color-text);
}
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}
.step-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}
.step-num {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  font-size: 0.875rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  flex-shrink: 0;
}
.step-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--color-text);
}
.step-card p {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.55;
}

/* ─── Pricing Section ────────────────────────────── */
.section-pricing {
  padding: 64px 24px;
}
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  max-width: 720px;
  margin: 0 auto;
}
.pricing-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  background: var(--color-bg);
  position: relative;
}
.pricing-card.featured {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(10, 102, 194, 0.1), var(--shadow-md);
}
.featured-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-accent);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 3px 12px;
  border-radius: var(--radius-pill);
  white-space: nowrap;
}
.pricing-plan-name {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--color-text);
}
.pricing-price {
  font-size: 2.25rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 4px;
  color: var(--color-text);
}
.pricing-price-period {
  font-size: 1rem;
  font-weight: 400;
  color: var(--color-text-secondary);
  letter-spacing: 0;
}
.pricing-description {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: 20px;
  line-height: 1.5;
}
.pricing-features {
  list-style: none;
  margin-bottom: 24px;
}
.pricing-features li {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  padding: 5px 0;
  display: flex;
  align-items: flex-start;
  gap: 8px;
  line-height: 1.45;
}
.pricing-features li::before {
  content: '';
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-success-text);
  flex-shrink: 0;
  margin-top: 1px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23166534'%3E%3Cpath d='M13.78 4.22a.75.75 0 010 1.06l-7.25 7.25a.75.75 0 01-1.06 0L2.22 9.28a.75.75 0 011.06-1.06L6 10.94l6.72-6.72a.75.75 0 011.06 0z'/%3E%3C/svg%3E");
  background-size: contain;
  background-color: transparent;
  background-repeat: no-repeat;
}
.pricing-features li.promo-note {
  color: var(--color-text-muted);
  font-style: italic;
}
.pricing-features li.promo-note::before {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%239ca3af'%3E%3Cpath d='M8 1a7 7 0 100 14A7 7 0 008 1zm.75 4a.75.75 0 00-1.5 0v4.5a.75.75 0 001.5 0V5zm-.75 7.25a.875.875 0 110-1.75.875.875 0 010 1.75z'/%3E%3C/svg%3E");
}

/* ─── Login Page ─────────────────────────────────── */
.auth-page {
  min-height: calc(100vh - 56px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 24px;
  background: var(--color-bg-subtle);
}
.auth-container {
  width: 100%;
  max-width: var(--max-w-form);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-md);
}
.auth-container h1 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 6px;
  color: var(--color-text);
}
.auth-subtitle {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  margin-bottom: 28px;
}
.auth-form {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.auth-toggle {
  margin-top: 20px;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  text-align: center;
}
.auth-toggle button {
  background: none;
  border: none;
  color: var(--color-accent);
  font-size: 0.875rem;
  cursor: pointer;
  padding: 0;
  font-weight: 500;
  text-decoration: underline;
}
.auth-toggle button:hover {
  color: var(--color-accent-hover);
}
#auth-message {
  margin-top: 12px;
  font-size: 0.875rem;
  min-height: 20px;
  text-align: center;
}
#auth-message.error {
  color: var(--color-danger-text);
}
#auth-message.success {
  color: var(--color-success-text);
}
#auth-message.info {
  color: var(--color-info-text);
}

/* ─── Dashboard ──────────────────────────────────── */
.dashboard-page {
  max-width: var(--max-w-narrow);
  margin: 0 auto;
  padding: 36px 24px 64px;
}
.dashboard-header {
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-border);
}
.dashboard-header h1 {
  font-size: 1.375rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--color-text);
}
.dashboard-header p {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-top: 2px;
}

.connected-info {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.connected-row {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}
.connected-row strong {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
}
.connected-actions {
  display: flex;
  gap: 10px;
  margin-top: 14px;
  flex-wrap: wrap;
}

.subscription-info {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.subscription-plan-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}
.subscription-detail {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}
.subscription-upgrade {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
}
.upgrade-note {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-top: 8px;
}

.empty-state {
  text-align: center;
  padding: 28px 16px;
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

.new-key-form {
  border-top: 1px solid var(--color-border);
  padding-top: 16px;
  margin-top: 16px;
}
.new-key-form-label {
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--color-text);
}

#new-key-display {
  margin-top: 12px;
}

/* ─── Responsive ─────────────────────────────────── */
@media (max-width: 768px) {
  .nav-logo {
    height: 28px;
  }
  .hero-logo {
    height: 100px;
  }
  .nav-inner {
    padding: 0 16px;
  }
  .landing-hero {
    padding: 64px 16px 48px;
  }
  .section-how,
  .section-pricing {
    padding: 48px 16px;
  }
  .auth-container {
    padding: 28px 24px;
  }
  .dashboard-page {
    padding: 24px 16px 48px;
  }
  .card {
    padding: 18px;
  }
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  .steps-grid {
    grid-template-columns: 1fr;
  }
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  th, td {
    padding: 10px 12px;
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .hero-actions .btn {
    text-align: center;
  }
  .connected-actions {
    flex-direction: column;
  }
  .form-row {
    flex-direction: column;
  }
  .form-row input {
    min-width: unset;
  }
}