/* ============================================================
   CSS RESET + BASE
============================================================ */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: #333;
  line-height: 1.6;
}

a {
  color: #0f3460;
  text-decoration: underline;
}

a:hover {
  color: #0a2540;
}

/* ============================================================
   HEADER
============================================================ */

header {
  background: #fff;
  color: #1a1a2e;
  text-align: center;
  padding: 48px 24px 40px;
  border-bottom: 3px solid #1a1a2e;
}

header .logo-row {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
  margin-bottom: 32px;
}

header .logo-row img {
  max-height: 48px;
  width: auto;
}

header .logo-row img[src*="caf-logo"] {
  max-height: 72px;
}

header h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.2;
}

header .subtitle {
  font-size: 1.25rem;
  color: #555;
  margin-bottom: 4px;
}

/* ============================================================
   NAVIGATION
============================================================ */

nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #f0f0f5;
  border-bottom: 1px solid #ddd;
}

nav ul {
  display: flex;
  flex-direction: row;
  list-style: none;
  justify-content: center;
  flex-wrap: wrap;
  padding: 0 16px;
  margin: 0;
}

nav ul li a {
  display: block;
  padding: 14px 16px;
  color: #1a1a2e;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  white-space: nowrap;
  transition: color 0.2s, background 0.2s;
}

nav ul li a:hover {
  color: #0f3460;
  background: #e2e2ed;
  text-decoration: none;
}

nav ul li a.active {
  color: #0f3460;
  border-bottom: 2px solid #0f3460;
}

/* ============================================================
   SECTIONS — SHARED
============================================================ */

main section {
  padding: 56px 24px;
}

main section:nth-child(odd) {
  background: #fff;
}

main section:nth-child(even) {
  background: #fafafa;
}

main section > *,
main section .container {
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

main section h2 {
  color: #1a1a2e;
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 20px;
}

main section h3 {
  color: #1a1a2e;
  font-size: 1.1rem;
  font-weight: 600;
  margin-top: 24px;
  margin-bottom: 10px;
}

main section p {
  margin-bottom: 16px;
  max-width: 800px;
}

main section p:last-child {
  margin-bottom: 0;
}

main section ul {
  padding-left: 24px;
  margin-bottom: 16px;
  max-width: 800px;
}

main section ul li {
  margin-bottom: 8px;
}

/* ============================================================
   DEADLINE CALLOUT BOX
============================================================ */

.deadline-box {
  border-left: 4px solid #0f3460;
  background: #e8f4f8;
  padding: 16px 20px;
  border-radius: 0 4px 4px 0;
  margin-top: 24px;
  font-size: 1rem;
  max-width: 800px;
}

.notice-box {
  border-left: 4px solid #c9a227;
  background: #fef9e7;
  padding: 16px 20px;
  border-radius: 0 4px 4px 0;
  margin-top: 16px;
  font-size: 0.9rem;
  max-width: 800px;
}

/* ============================================================
   TIMELINE TABLE
============================================================ */

table {
  width: 100%;
  max-width: 800px;
  border-collapse: collapse;
  margin-top: 8px;
}

table caption {
  text-align: left;
  font-size: 0.85rem;
  color: #666;
  margin-bottom: 8px;
}

table thead th {
  background: #1a1a2e;
  color: #fff;
  text-align: left;
  padding: 10px 16px;
  font-size: 0.9rem;
  font-weight: 600;
}

table tbody tr {
  border-bottom: 1px solid #e0e0e0;
}

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

table tbody tr:nth-child(even) {
  background: #f5f5f5;
}

table tbody td {
  padding: 10px 16px;
  font-size: 0.95rem;
}

/* ============================================================
   VENUE CARD
============================================================ */

#venue {
  display: block;
  padding: 56px 24px;
}

#venue > h2 {
  max-width: 800px;
  margin: 0 auto 20px;
  color: #1a1a2e;
  font-size: 1.5rem;
  font-weight: 700;
}

#venue .venue-card {
  max-width: 800px;
  margin: 0 auto;
  background: #fff;
  border: 1px solid #dde;
  border-radius: 8px;
  padding: 24px;
}

#venue .venue-card h3 {
  margin-top: 0;
  color: #0f3460;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 12px;
}

#venue .venue-card address {
  font-style: normal;
  line-height: 1.7;
  color: #444;
  margin-bottom: 12px;
  font-size: 0.9rem;
}

#venue .venue-note {
  margin-top: 16px;
  padding: 12px 16px;
  background: #fff7e6;
  border-left: 4px solid #d97706;
  border-radius: 0 4px 4px 0;
  font-size: 0.9rem;
  line-height: 1.55;
}

/* ============================================================
   COMMITTEE BADGES
============================================================ */

.committee-list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  max-width: 800px;
  margin: 0 auto;
}

.committee-list li {
  display: inline-flex;
  align-items: center;
  background: #f0f0f5;
  border-radius: 16px;
  padding: 6px 12px;
  font-size: 0.9rem;
  color: #1a1a2e;
  margin-bottom: 0;
}

/* ============================================================
   SPONSORS LOGO ROW
============================================================ */

#sponsors .logo-row {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 32px;
  margin-top: 16px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

#sponsors .logo-row a {
  display: inline-flex;
  align-items: center;
}

#sponsors .logo-row img {
  max-height: 40px;
  width: auto;
  filter: grayscale(100%);
  opacity: 0.6;
  transition: filter 0.3s, opacity 0.3s;
}

#sponsors .logo-row img[src*="caf-logo"] {
  max-height: 60px;
}

#sponsors .logo-row a:hover img {
  filter: none;
  opacity: 1;
}

/* ============================================================
   SUBMISSION FORM
============================================================ */

#submit form {
  max-width: 520px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label,
.form-group legend {
  display: block;
  margin-bottom: 6px;
  font-weight: 600;
  font-size: 13px;
  color: #333;
}

.form-group fieldset {
  border: none;
  padding: 0;
  margin: 0;
}

.form-group fieldset legend {
  margin-bottom: 8px;
}

.form-group fieldset label {
  display: inline-flex;
  align-items: center;
  font-weight: 400;
  font-size: 14px;
  margin-right: 20px;
  margin-bottom: 0;
  cursor: pointer;
}

.form-group fieldset label input[type="radio"] {
  width: auto;
  margin-right: 6px;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group textarea,
.form-group select {
  display: block;
  width: 100%;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 10px 12px;
  font-size: 14px;
  font-family: inherit;
  color: #333;
  background: #fff;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input[type="text"]:focus,
.form-group input[type="email"]:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: #0f3460;
  box-shadow: 0 0 0 3px rgba(15, 52, 96, 0.12);
}

.form-group input[type="text"]:invalid:not(:placeholder-shown),
.form-group input[type="email"]:invalid:not(:placeholder-shown),
.form-group textarea:invalid:not(:placeholder-shown) {
  border-color: #dc3545;
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

#word-count {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  color: #888;
}

#word-count.over-limit {
  color: #dc3545;
}

/* Drop zone */
.drop-zone {
  border: 2px dashed #ccc;
  border-radius: 4px;
  padding: 24px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  position: relative;
}

.drop-zone p {
  margin: 0;
  color: #666;
  font-size: 14px;
  pointer-events: none;
}

.drop-zone input[type="file"] {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.drop-zone:hover,
.drop-zone.drag-over {
  border-color: #0f3460;
  background: #f8f8ff;
}

/* Honeypot — hidden from real users */
.honeypot {
  position: absolute;
  left: -9999px;
  opacity: 0;
  pointer-events: none;
  tab-index: -1;
}

/* Submit button */
#submit-btn {
  display: block;
  width: 100%;
  padding: 12px;
  background: #0f3460;
  color: #fff;
  border: none;
  border-radius: 4px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
  margin-top: 8px;
  font-family: inherit;
}

#submit-btn:hover {
  background: #0a2540;
}

#submit-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Form status messages */
#form-status {
  padding: 12px;
  border-radius: 4px;
  margin-top: 16px;
  display: none;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

#form-status.success {
  display: block;
  background: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
}

#form-status.error {
  display: block;
  background: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
}

/* Deadline notice */
#deadline-notice {
  border-left: 4px solid #dc3545;
  background: #fff5f5;
  padding: 16px;
  margin-bottom: 16px;
  border-radius: 0 4px 4px 0;
  font-size: 0.9rem;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

/* Privacy notice */
.privacy-notice {
  font-size: 0.8rem;
  color: #777;
  margin-top: 16px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

.privacy-notice a {
  color: #0f3460;
}

/* ============================================================
   FOOTER / CONTACT
============================================================ */

footer {
  background: #1a1a2e;
  color: #fff;
  padding: 32px 24px;
  text-align: center;
}

footer p {
  margin-bottom: 8px;
  font-size: 0.9rem;
  opacity: 0.9;
}

footer p:last-child {
  margin-bottom: 0;
  opacity: 0.6;
  font-size: 0.8rem;
}

footer a {
  color: #8ab4d4;
  text-decoration: underline;
}

footer a:hover {
  color: #b8d4ea;
}

/* ============================================================
   RESPONSIVE — MOBILE (max-width: 768px)
============================================================ */

@media (max-width: 768px) {

  /* Header */
  header {
    padding: 32px 16px 28px;
  }

  header h1 {
    font-size: 1.4rem;
  }

  header .subtitle {
    font-size: 1rem;
  }

  header .logo-row {
    gap: 16px;
    margin-bottom: 24px;
  }

  header .logo-row img {
    max-height: 36px;
  }

  header .logo-row img[src*="caf-logo"] {
    max-height: 54px;
  }

  /* Nav */
  nav ul {
    justify-content: flex-start;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  nav ul::-webkit-scrollbar {
    display: none;
  }

  nav ul li a {
    padding: 12px 12px;
    font-size: 0.85rem;
  }

  /* Sections */
  main section {
    padding: 36px 16px;
  }

  /* Venue card on mobile: full width */
  #venue .venue-card {
    width: 100%;
    margin-left: auto;
    margin-right: auto;
  }

  /* Table: allow horizontal scroll */
  table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  /* Form: full width on mobile */
  #submit form {
    max-width: 100%;
  }

  #form-status,
  #deadline-notice,
  .privacy-notice {
    max-width: 100%;
  }

  /* Footer */
  footer {
    padding: 24px 16px;
  }

  /* Committee badges */
  .committee-list {
    gap: 8px;
  }

  /* Sponsors */
  #sponsors .logo-row {
    gap: 20px;
  }
}