/* ── NenanaWISP -- Public Site Styles ─────────────────── */

:root {
  --color-primary: #1a5276;
  --color-primary-light: #2e86c1;
  --color-primary-dark: #0e3a53;
  --color-accent: #27ae60;
  --color-accent-hover: #219a52;
  --color-danger: #c0392b;
  --color-warning: #f39c12;
  --color-text: #1f2937;
  --color-text-light: #6b7280;
  --color-bg: #f8fafc;
  --color-white: #ffffff;
  --color-border: #e5e7eb;
  --color-card-bg: #ffffff;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
  --radius: 8px;
  --radius-lg: 12px;
  --max-width: 1100px;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-primary-light);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* ── Header / Nav ──────────────────────────────────────── */

.site-header {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-md);
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--color-white);
  font-weight: 700;
  font-size: 1.2rem;
  text-decoration: none;
}

.nav-brand:hover {
  text-decoration: none;
}

.nav-brand img {
  height: 36px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.nav-links a {
  color: rgba(255,255,255,0.85);
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: background-color 0.2s, color 0.2s;
}

.nav-links a:hover {
  background-color: rgba(255,255,255,0.15);
  color: var(--color-white);
  text-decoration: none;
}

.nav-links a.nav-cta {
  background-color: var(--color-accent);
  color: var(--color-white);
}

.nav-links a.nav-cta:hover {
  background-color: var(--color-accent-hover);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-white);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 8px;
}

@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background-color: var(--color-primary);
    padding: 16px 24px;
    box-shadow: var(--shadow-lg);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 12px 16px;
    width: 100%;
  }
}

/* ── Hero Section ──────────────────────────────────────── */

.hero {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, var(--color-primary-light) 100%);
  color: var(--color-white);
  padding: 80px 24px;
  text-align: center;
}

.hero h1 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.2;
}

.hero p {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.85);
  max-width: 600px;
  margin: 0 auto 32px;
}

.hero-cta {
  display: inline-block;
  background-color: var(--color-accent);
  color: var(--color-white);
  padding: 14px 36px;
  border-radius: var(--radius);
  font-size: 1.05rem;
  font-weight: 600;
  transition: background-color 0.2s, transform 0.2s;
}

.hero-cta:hover {
  background-color: var(--color-accent-hover);
  text-decoration: none;
  transform: translateY(-1px);
}

@media (max-width: 768px) {
  .hero {
    padding: 48px 24px;
  }
  .hero h1 {
    font-size: 1.8rem;
  }
}

/* ── Section Layout ────────────────────────────────────── */

.section {
  padding: 64px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-alt {
  background-color: var(--color-white);
}

.section-title {
  font-size: 1.8rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 12px;
  color: var(--color-primary);
}

.section-subtitle {
  text-align: center;
  color: var(--color-text-light);
  margin-bottom: 48px;
  font-size: 1.05rem;
}

/* ── Plan Cards ────────────────────────────────────────── */

.plans-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

@media (max-width: 900px) {
  .plans-grid {
    grid-template-columns: 1fr;
    max-width: 420px;
    margin: 0 auto;
  }
}

.plan-card {
  background: var(--color-card-bg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: transform 0.2s, box-shadow 0.2s;
  position: relative;
}

.plan-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.plan-card.featured {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-md);
}

.plan-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-primary-light);
  color: var(--color-white);
  padding: 4px 16px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.plan-name {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--color-primary);
}

.plan-speed {
  color: var(--color-text-light);
  font-size: 0.95rem;
  margin-bottom: 16px;
}

.plan-price {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 4px;
}

.plan-price span {
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--color-text-light);
}

.plan-features {
  list-style: none;
  margin: 24px 0;
  text-align: left;
}

.plan-features li {
  padding: 6px 0;
  color: var(--color-text);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.plan-features li::before {
  content: "\2713";
  color: var(--color-accent);
  font-weight: 700;
  flex-shrink: 0;
}

.plan-btn {
  display: block;
  width: 100%;
  padding: 12px;
  background-color: var(--color-primary);
  color: var(--color-white);
  border: none;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s;
}

.plan-btn:hover {
  background-color: var(--color-primary-light);
  text-decoration: none;
}

.plan-card.featured .plan-btn {
  background-color: var(--color-accent);
}

.plan-card.featured .plan-btn:hover {
  background-color: var(--color-accent-hover);
}

/* ── Signup Form ───────────────────────────────────────── */

.signup-section {
  background-color: var(--color-white);
  padding: 64px 24px;
}

.signup-container {
  max-width: 640px;
  margin: 0 auto;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

@media (max-width: 600px) {
  .form-grid {
    grid-template-columns: 1fr;
  }
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
}

.form-group label .required {
  color: var(--color-danger);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 0.95rem;
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-white);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary-light);
  box-shadow: 0 0 0 3px rgba(46,134,193,0.15);
}

.form-group input.error,
.form-group select.error {
  border-color: var(--color-danger);
}

.form-error {
  font-size: 0.8rem;
  color: var(--color-danger);
  display: none;
}

.form-group textarea {
  resize: vertical;
  min-height: 80px;
}

.tos-check {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-top: 8px;
}

.tos-check input[type="checkbox"] {
  margin-top: 4px;
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.tos-check label {
  font-size: 0.85rem;
  font-weight: 400;
}

.submit-btn {
  display: block;
  width: 100%;
  padding: 14px;
  background-color: var(--color-accent);
  color: var(--color-white);
  border: none;
  border-radius: var(--radius);
  font-size: 1.05rem;
  font-weight: 600;
  cursor: pointer;
  margin-top: 24px;
  transition: background-color 0.2s;
}

.submit-btn:hover {
  background-color: var(--color-accent-hover);
}

.submit-btn:disabled {
  background-color: var(--color-text-light);
  cursor: not-allowed;
}

.form-message {
  text-align: center;
  padding: 16px;
  border-radius: var(--radius);
  margin-top: 16px;
  display: none;
}

.form-message.success {
  background-color: #f0fdf4;
  color: #166534;
  border: 1px solid #bbf7d0;
  display: block;
}

.form-message.error {
  background-color: #fef2f2;
  color: #991b1b;
  border: 1px solid #fecaca;
  display: block;
}

/* ── About Section ─────────────────────────────────────── */

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

@media (max-width: 768px) {
  .about-content {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

.about-text h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
  color: var(--color-primary);
}

.about-text p {
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 16px;
}

.about-features {
  list-style: none;
}

.about-features li {
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
}

.about-features li::before {
  content: "\2713";
  color: var(--color-accent);
  font-weight: 700;
  font-size: 1.1rem;
}

/* ── Footer ────────────────────────────────────────────── */

.site-footer {
  background-color: var(--color-primary-dark);
  color: rgba(255,255,255,0.7);
  padding: 40px 24px;
  text-align: center;
}

.footer-content {
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.footer-links a {
  color: rgba(255,255,255,0.7);
  font-size: 0.9rem;
}

.footer-links a:hover {
  color: var(--color-white);
}

.footer-info p {
  font-size: 0.85rem;
  margin-bottom: 4px;
}

/* ── Utility Pages (success, cancel, etc.) ─────────────── */

.page-message {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px 24px;
}

.message-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  text-align: center;
  max-width: 500px;
  box-shadow: var(--shadow-md);
}

.message-card .icon {
  font-size: 3rem;
  margin-bottom: 16px;
}

.message-card h2 {
  margin-bottom: 12px;
  color: var(--color-primary);
}

.message-card p {
  color: var(--color-text-light);
  margin-bottom: 24px;
  line-height: 1.6;
}

.message-card .btn {
  display: inline-block;
  padding: 12px 32px;
  background-color: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius);
  font-weight: 600;
  transition: background-color 0.2s;
}

.message-card .btn:hover {
  background-color: var(--color-primary-light);
  text-decoration: none;
}

/* ── Loading Spinner ───────────────────────────────────── */

.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255,255,255,0.3);
  border-top-color: var(--color-white);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  vertical-align: middle;
  margin-right: 8px;
}

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