/* ============================================= */
/* Phase 3 — On-Premises Buildathon Page Styles  */
/* ============================================= */

/* Document Download Cards */
.p3-doc-card {
  border: 1px solid color-mix(in srgb, var(--color-accent) 18%, transparent);
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, #111713, #0d130f);
  padding: clamp(28px, 4vw, 44px);
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
  position: relative;
  overflow: hidden;
}

.p3-doc-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--color-accent), transparent);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.p3-doc-card::after {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle, color-mix(in srgb, var(--color-accent) 10%, transparent), transparent 70%);
  pointer-events: none;
  transition: opacity 0.4s ease;
  opacity: 0.5;
}

.p3-doc-card:hover {
  border-color: color-mix(in srgb, var(--color-accent) 38%, transparent);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35), inset 0 1px 0 color-mix(in srgb, var(--color-accent) 12%, transparent);
  transform: translateY(-3px);
}

.p3-doc-card:hover::before {
  opacity: 0.7;
}

.p3-doc-card:hover::after {
  opacity: 1;
}

.p3-doc-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--color-accent) 8%, transparent);
  border: 1px solid color-mix(in srgb, var(--color-accent) 20%, transparent);
  flex-shrink: 0;
}

.p3-doc-icon--secondary {
  background: color-mix(in srgb, var(--color-accent-2-500) 8%, transparent);
  border-color: color-mix(in srgb, var(--color-accent-2-500) 20%, transparent);
}

.p3-doc-label {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.p3-doc-label--secondary {
  color: var(--color-accent-2-500);
}

.p3-doc-title {
  font-size: clamp(20px, 2.5vw, 26px);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0;
  line-height: 1.2;
}

.p3-doc-desc {
  font-size: 15px;
  line-height: 1.7;
  color: color-mix(in srgb, var(--color-text) 68%, transparent);
  margin: 0;
  max-width: 48ch;
}

.p3-doc-link {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 14px 28px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  position: relative;
  overflow: hidden;
  margin-top: 8px;
  align-self: flex-start;
}

.p3-doc-link::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(45deg, transparent 30%, color-mix(in srgb, var(--color-accent) 8%, transparent) 50%, transparent 70%);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
}

.p3-doc-link:hover::after {
  transform: translateX(100%);
}

/* Resource Cards (reuse same design) */
.p3-resource-card {
  border: 1px solid color-mix(in srgb, var(--color-accent) 18%, transparent);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
  position: relative;
  overflow: hidden;
}

.p3-resource-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--color-accent), transparent);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.p3-resource-card:hover {
  border-color: color-mix(in srgb, var(--color-accent) 36%, transparent);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3), inset 0 1px 0 color-mix(in srgb, var(--color-accent) 10%, transparent);
  transform: translateY(-2px);
}

.p3-resource-card:hover::before {
  opacity: 0.6;
}

.p3-resource-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--color-accent) 8%, transparent);
  border: 1px solid color-mix(in srgb, var(--color-accent) 16%, transparent);
  flex-shrink: 0;
}

.p3-resource-label {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-text);
}

.p3-resource-desc {
  font-size: 13px;
  line-height: 1.6;
  color: color-mix(in srgb, var(--color-text) 58%, transparent);
  flex: 1;
}

.p3-resource-action {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding-top: 8px;
  border-top: 1px solid color-mix(in srgb, var(--color-accent) 12%, transparent);
  transition: color 0.2s ease;
  margin-top: auto;
}

.p3-resource-action:hover {
  color: var(--color-accent-300);
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
  nav[style*="position:fixed"] {
    padding: 10px 16px !important;
    gap: 14px !important;
  }
  nav [data-navlinks="1"] {
    display: none !important;
  }

  .tf-timeline-row {
    grid-template-columns: 1fr;
    gap: 6px;
    padding: 18px 0;
    align-items: start;
  }
  .tf-timeline-date {
    font-size: 12px;
  }
  .tf-timeline-event {
    font-size: 16px;
    line-height: 1.4;
  }
  .tf-timeline-tag {
    font-size: 9px;
    justify-self: start;
    background: color-mix(in srgb, var(--color-accent) 10%, transparent);
    border: 1px solid color-mix(in srgb, var(--color-accent) 20%, transparent);
    padding: 3px 10px;
    border-radius: 12px;
  }
  .tf-timeline-tag--final {
    background: color-mix(in srgb, var(--color-accent-2-500) 12%, transparent);
    border-color: color-mix(in srgb, var(--color-accent-2-500) 28%, transparent);
  }

  .p3-doc-cards-grid {
    grid-template-columns: 1fr !important;
  }
}

@media (max-width: 480px) {
  h1[data-glitch="1"] {
    font-size: clamp(36px, 10vw, 56px) !important;
  }
  [style*="grid-template-columns:repeat(auto-fit,minmax(280px"] {
    grid-template-columns: 1fr !important;
  }
  footer [style*="grid-template-columns:repeat(auto-fit,minmax(220px"] {
    grid-template-columns: 1fr !important;
  }
}

/* Featured Unified Handbook Card */
.p3-handbook-card {
  border: 1px solid color-mix(in srgb, var(--color-accent) 26%, transparent);
  border-radius: var(--radius-lg);
  background: linear-gradient(155deg, #111a14 0%, #0c120e 100%);
  padding: clamp(32px, 5vw, 56px);
  position: relative;
  overflow: hidden;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.p3-handbook-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(to right, transparent, var(--color-accent), transparent);
}

.p3-handbook-card:hover {
  border-color: color-mix(in srgb, var(--color-accent) 46%, transparent);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4), inset 0 1px 0 color-mix(in srgb, var(--color-accent) 20%, transparent);
}

/* Submission Portal Cards */
.p3-submission-card {
  border: 1px solid color-mix(in srgb, var(--color-accent) 22%, transparent);
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, #111713, #0d130f);
  padding: clamp(28px, 4vw, 40px);
  display: flex;
  flex-direction: column;
  gap: 18px;
  position: relative;
  overflow: hidden;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}

.p3-submission-card:hover {
  border-color: color-mix(in srgb, var(--color-accent) 42%, transparent);
  box-shadow: 0 14px 44px rgba(0, 0, 0, 0.38);
  transform: translateY(-3px);
}

.p3-submission-card--urgent {
  border-color: color-mix(in srgb, var(--color-accent-2-500) 28%, transparent);
}

.p3-submission-card--urgent:hover {
  border-color: var(--color-accent-2-500);
  box-shadow: 0 14px 44px color-mix(in srgb, var(--color-accent-2-500) 18%, transparent);
}

.p3-submission-card--final {
  border-color: color-mix(in srgb, var(--color-accent) 28%, transparent);
}

.p3-submission-card--final:hover {
  border-color: var(--color-accent);
  box-shadow: 0 14px 44px color-mix(in srgb, var(--color-accent) 18%, transparent);
}

/* Checkpoint badges */
.p3-checkpoint-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  border-radius: 999px;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  width: fit-content;
}

.p3-checkpoint-badge--urgent {
  background: color-mix(in srgb, var(--color-accent-2-500) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--color-accent-2-500) 36%, transparent);
  color: var(--color-accent-2-500);
}

.p3-checkpoint-badge--final {
  background: color-mix(in srgb, var(--color-accent) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--color-accent) 36%, transparent);
  color: var(--color-accent);
}