/* =====================================================
   SAJI — Custom Styles
   Base: Tailwind CSS CDN
   Theme: Dark (#0a0a0a) × Gold (#f5c518)
   ===================================================== */

:root {
  --gold: #f5c518;
  --gold-dim: rgba(245, 197, 24, 0.5);
  --dark: #0a0a0a;
  --dark-2: #111111;
  --dark-3: #1a1a1a;
  --text: #f0f0f0;
  --text-dim: rgba(240, 240, 240, 0.45);
}

/* =====================================================
   Animations
   ===================================================== */
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(-12deg); }
  50%       { transform: translateY(-14px) rotate(-12deg); }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%       { transform: translateX(-8px); }
  40%       { transform: translateX(8px); }
  60%       { transform: translateX(-5px); }
  80%       { transform: translateX(5px); }
}

@keyframes progressFill {
  from { width: 0%; }
  to   { width: 100%; }
}

@keyframes popIn {
  0%   { transform: scale(0.9); opacity: 0; }
  60%  { transform: scale(1.03); }
  100% { transform: scale(1);   opacity: 1; }
}

@keyframes confetti {
  0%   { transform: translateY(0) rotate(0deg); opacity: 1; }
  100% { transform: translateY(40px) rotate(360deg); opacity: 0; }
}

/* =====================================================
   Scroll Reveal
   ===================================================== */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* =====================================================
   Header
   ===================================================== */
#site-header {
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: border-color 0.3s;
}
#site-header.scrolled {
  border-bottom: 1px solid #1f1f1f;
}

/* =====================================================
   Navigation Links
   ===================================================== */
.nav-link {
  position: relative;
  color: var(--text-dim);
  font-family: 'Bebas Neue', sans-serif;
  letter-spacing: 0.2em;
  font-size: 0.85rem;
  transition: color 0.25s;
  padding-bottom: 4px;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}
.nav-link:hover,
.nav-link.active {
  color: var(--gold);
}
.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
}

/* =====================================================
   Hero
   ===================================================== */
.hero-spoon {
  animation: float 3.5s ease-in-out infinite;
  filter: drop-shadow(0 0 24px rgba(245, 197, 24, 0.35));
}

.hero-pattern {
  background-image:
    radial-gradient(circle at 15% 85%, rgba(245,197,24,0.04) 0%, transparent 55%),
    radial-gradient(circle at 85% 15%, rgba(245,197,24,0.06) 0%, transparent 55%);
}

/* =====================================================
   Section Titles  (── TITLE ──)
   ===================================================== */
.section-title {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  font-family: 'Bebas Neue', sans-serif;
  letter-spacing: 0.25em;
  color: var(--text);
  font-size: clamp(1.4rem, 3vw, 1.9rem);
}
.section-title::before,
.section-title::after {
  content: '';
  flex: 1;
  height: 1px;
}
.section-title::before {
  background: linear-gradient(to right, transparent, var(--gold));
}
.section-title::after {
  background: linear-gradient(to left, transparent, var(--gold));
}

.section-sub {
  font-family: 'Noto Serif JP', serif;
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  color: var(--gold);
}

/* =====================================================
   Buttons
   ===================================================== */
.btn-gold {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 2.2rem;
  background: var(--gold);
  color: var(--dark);
  font-family: 'Bebas Neue', sans-serif;
  letter-spacing: 0.2em;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: background 0.25s, transform 0.2s, box-shadow 0.25s;
  clip-path: polygon(8px 0%, 100% 0%, calc(100% - 8px) 100%, 0% 100%);
}
.btn-gold:hover {
  background: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(245,197,24,0.25);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 2.2rem;
  background: transparent;
  color: var(--text);
  font-family: 'Bebas Neue', sans-serif;
  letter-spacing: 0.2em;
  font-size: 0.95rem;
  border: 1px solid var(--gold);
  cursor: pointer;
  transition: background 0.25s, color 0.25s, transform 0.2s;
  clip-path: polygon(8px 0%, 100% 0%, calc(100% - 8px) 100%, 0% 100%);
}
.btn-outline:hover {
  background: var(--gold);
  color: var(--dark);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 0.5rem 1.4rem;
  font-size: 0.8rem;
}

/* =====================================================
   Image Placeholders
   ===================================================== */
.img-placeholder {
  background: var(--dark-3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  font-family: 'Bebas Neue', sans-serif;
  position: relative;
  overflow: hidden;
  width: 100%;
  height: 100%;
}
.img-placeholder::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(
      45deg,
      transparent,
      transparent 14px,
      rgba(245,197,24,0.025) 14px,
      rgba(245,197,24,0.025) 15px
    );
}

/* =====================================================
   Work Cards
   ===================================================== */
.work-card {
  background: var(--dark-3);
  border: 1px solid #1f1f1f;
  overflow: hidden;
  transition: border-color 0.3s, transform 0.3s;
}
.work-card:hover {
  border-color: var(--gold);
  transform: translateY(-5px);
}

/* =====================================================
   Case Cards
   ===================================================== */
.case-card {
  background: var(--dark-3);
  border: 1px solid #1f1f1f;
  padding: 2.5rem 2rem;
  position: relative;
  overflow: hidden;
  transition: border-color 0.3s, transform 0.3s;
}
.case-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s ease;
}
.case-card:hover {
  border-color: var(--gold);
  transform: translateY(-5px);
}
.case-card:hover::after {
  transform: scaleX(1);
}
.case-card-number {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 3.5rem;
  color: rgba(245,197,24,0.08);
  position: absolute;
  top: 1rem;
  right: 1.25rem;
  line-height: 1;
  pointer-events: none;
}

/* =====================================================
   Contact Form
   ===================================================== */
.form-label {
  display: block;
  font-family: 'Bebas Neue', sans-serif;
  letter-spacing: 0.2em;
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-bottom: 0.45rem;
}
.form-input {
  width: 100%;
  background: var(--dark-3);
  border: 1px solid #2a2a2a;
  color: var(--text);
  padding: 0.75rem 1rem;
  font-family: 'Noto Serif JP', serif;
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.25s, box-shadow 0.25s;
}
.form-input:focus {
  border-color: var(--gold);
  box-shadow: 0 0 0 2px rgba(245,197,24,0.12);
}
.form-input::placeholder {
  color: rgba(240,240,240,0.2);
  font-size: 0.85rem;
}

/* =====================================================
   Puzzle Cards
   ===================================================== */
.puzzle-card {
  background: var(--dark-3);
  border: 1px solid #1f1f1f;
  overflow: hidden;
  cursor: pointer;
  transition: border-color 0.3s, transform 0.3s;
  position: relative;
}
.puzzle-card:hover {
  border-color: var(--gold);
  transform: translateY(-4px);
}
.puzzle-card:hover .puzzle-hover-overlay {
  opacity: 1;
}
.puzzle-hover-overlay {
  position: absolute;
  inset: 0;
  background: rgba(245,197,24,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}

/* =====================================================
   Modal / Lightbox
   ===================================================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.93);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  animation: fadeIn 0.2s ease;
  overflow-y: auto;
}
.modal-box {
  background: var(--dark-2);
  border: 1px solid #222;
  width: 100%;
  max-width: 860px;
  max-height: 92vh;
  overflow-y: auto;
  position: relative;
  animation: fadeInUp 0.3s ease;
}

.modal-nav-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(10,10,10,0.7);
  border: 1px solid #333;
  color: var(--text);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  transition: background 0.2s, border-color 0.2s;
  font-size: 1.2rem;
  user-select: none;
}
.modal-nav-btn:hover {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--dark);
}
.modal-nav-btn.prev { left: -22px; }
.modal-nav-btn.next { right: -22px; }

/* Indicators */
.indicator {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #333;
  transition: background 0.2s, transform 0.2s;
}
.indicator.active {
  background: var(--gold);
  transform: scale(1.3);
}

/* =====================================================
   Hint System
   ===================================================== */
.hint-progress-bar {
  height: 3px;
  background: #2a2a2a;
  border-radius: 2px;
  overflow: hidden;
}
.hint-progress-fill {
  height: 100%;
  background: var(--gold);
  width: 0%;
  border-radius: 2px;
}
.hint-progress-fill.running {
  animation: progressFill var(--dur, 5s) linear forwards;
}

/* =====================================================
   Answer Result
   ===================================================== */
.answer-result-correct {
  animation: popIn 0.35s ease forwards;
  color: var(--gold);
}
.answer-result-wrong {
  animation: shake 0.4s ease;
}

/* =====================================================
   Secret Page
   ===================================================== */
.secret-frame {
  border: 1px solid var(--gold);
  padding: 8px;
  position: relative;
}
.secret-frame::before,
.secret-frame::after {
  content: '✦';
  position: absolute;
  background: var(--dark);
  padding: 0 8px;
  color: var(--gold);
  font-size: 0.75rem;
}
.secret-frame::before {
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
}
.secret-frame::after {
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
}

.shake {
  animation: shake 0.4s ease;
}
.auth-fade-in {
  animation: fadeInUp 0.5s ease forwards;
}

/* =====================================================
   Footer
   ===================================================== */
.footer-link {
  color: var(--text-dim);
  font-family: 'Bebas Neue', sans-serif;
  letter-spacing: 0.15em;
  font-size: 0.8rem;
  transition: color 0.2s;
}
.footer-link:hover {
  color: var(--gold);
}

/* =====================================================
   Scrollbar
   ===================================================== */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--dark); }
::-webkit-scrollbar-thumb { background: #2a2a2a; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--gold); }

/* =====================================================
   AdSense Placeholder
   ===================================================== */
.ad-placeholder {
  background: var(--dark-3);
  border: 1px dashed #2a2a2a;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  font-family: 'Bebas Neue', sans-serif;
  letter-spacing: 0.15em;
  font-size: 0.75rem;
}

/* =====================================================
   Utility
   ===================================================== */
.gold-line {
  display: block;
  width: 36px;
  height: 1px;
  background: var(--gold);
  margin: 0 auto;
}