/* ===============================================
   EKA SURYA RUN - Custom Styles
   Tailwind CSS via CDN handles most styling.
   This file contains: theme variables, custom
   components, animations, and scroll reveal.
   =============================================== */

:root {
  --color-bg: #ffffff;
  --color-bg-alt: #fafafa;
  --color-text: #1f2937;
  --color-border: #f3f4f6;
  --crimson: #DC2626;
  --crimson-dark: #B91C1C;
  --gold: #F59E0B;
  --glass-bg: rgba(255, 255, 255, 0.6);
  --glass-border: rgba(220, 38, 38, 0.1);
}

html.dark {
  --color-bg: #0B0F14;
  --color-bg-alt: #111827;
  --color-text: #F3F4F6;
  --color-border: #1f2937;
  --glass-bg: rgba(17, 24, 39, 0.6);
  --glass-border: rgba(245, 158, 11, 0.15);
}

/* ---------- Base ---------- */
html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background-color: var(--crimson);
  color: white;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--crimson);
  border-radius: 10px;
}
html.dark ::-webkit-scrollbar-thumb {
  background: var(--gold);
}

/* ---------- Hero pattern ---------- */
.hero-pattern {
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px);
  background-size: 60px 60px;
}

/* ---------- Glass card (countdown) ---------- */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.glass-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(220, 38, 38, 0.15);
}
html.dark .glass-card {
  border-color: rgba(245, 158, 11, 0.2);
}

/* ---------- Category card ---------- */
.category-card {
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1),
              box-shadow 0.4s ease,
              border-color 0.3s ease;
}
.category-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 25px 50px -12px rgba(220, 38, 38, 0.25);
}

/* ---------- Sponsor logo ---------- */
.sponsor-logo {
  transition: transform 0.3s ease, filter 0.3s ease, border-color 0.3s ease;
  border: 1px solid transparent;
}
.sponsor-logo:hover {
  transform: translateY(-3px);
  border-color: var(--crimson);
}

/* ---------- Gallery ---------- */
.gallery-item {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

/* ---------- Navbar scrolled state ---------- */
#navbar.scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.06);
}

/* ---------- Nav link active ---------- */
.nav-link {
  position: relative;
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 0;
  height: 2px;
  background: var(--crimson);
  transition: width 0.3s ease;
}
.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* ---------- Scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
  will-change: opacity, transform;
}
.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger effect for grid items via inline delay handled in JS */

/* ---------- FAQ accordion ---------- */
.faq-item {
  border: 1px solid var(--color-border);
  border-radius: 16px;
  overflow: hidden;
  background: var(--color-bg);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.faq-item.open {
  border-color: var(--crimson);
  box-shadow: 0 4px 20px rgba(220, 38, 38, 0.08);
}
html.dark .faq-item {
  background: var(--color-bg-alt);
  border-color: var(--color-border);
}
.faq-trigger {
  width: 100%;
  text-align: left;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  font-weight: 600;
  cursor: pointer;
  transition: color 0.2s ease;
}
.faq-trigger:hover {
  color: var(--crimson);
}
html.dark .faq-trigger:hover {
  color: var(--gold);
}
.faq-icon {
  transition: transform 0.3s ease;
  flex-shrink: 0;
}
.faq-item.open .faq-icon {
  transform: rotate(180deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.faq-answer-inner {
  padding: 0 1.5rem 1.25rem;
  opacity: 0.75;
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ---------- Back to top visible ---------- */
#backToTop.visible {
  opacity: 1 !important;
  pointer-events: auto !important;
}

/* ---------- Keyframe animations ---------- */
@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50%      { background-position: 100% 50%; }
}
@keyframes pulseSoft {
  0%, 100% { opacity: 0.4; transform: scale(1); }
  50%      { opacity: 0.7; transform: scale(1.05); }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-20px); }
}

/* ---------- Reduce motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ---------- Responsive tweaks ---------- */
@media (max-width: 640px) {
  .glass-card {
    padding: 1rem !important;
  }
}