/* styles.css — Main menu + global styles */

@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700;900&family=Exo+2:wght@300;400;600;700&display=swap');

/* ── Variables ──────────────────────────────────────────────────────────── */
:root {
  --bg-primary:    #0d0d2b;
  --bg-card:       rgba(255, 255, 255, 0.04);
  --border-card:   rgba(255, 255, 255, 0.08);
  --text-primary:  #e8eaf6;
  --text-secondary: rgba(255, 255, 255, 0.5);
  --accent-cyan:   #00d4ff;
  --accent-purple: #7c3aed;
  --color-a:       #3b82f6;
  --color-b:       #ef4444;
  --color-c:       #f59e0b;
  --color-d:       #10b981;
  --color-e:       #8b5cf6;
  --color-f:       #ec4899;
  --easy-color:    #10b981;
  --hard-color:    #ef4444;
  --insane-color:  #8b5cf6;
  --leg-color:     #ffd700;
}

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

html, body {
  height: 100%;
  font-family: 'Exo 2', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  overflow-x: hidden;
}

/* Animated starfield background */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 20%, rgba(124, 58, 237, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(13, 13, 43, 0.9) 0%, var(--bg-primary) 100%);
  pointer-events: none;
  z-index: 0;
}

body > * { position: relative; z-index: 1; }

/* ── Menu Container ─────────────────────────────────────────────────────── */
.menu-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
  gap: 2.5rem;
}

/* ── Logo / Hero ────────────────────────────────────────────────────────── */
.menu-logo {
  text-align: center;
  animation: logoEntrance 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

.logo-title {
  font-family: 'Orbitron', sans-serif;
  font-size: clamp(3rem, 10vw, 6rem);
  font-weight: 900;
  letter-spacing: 0.15em;
  background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-purple) 60%, var(--color-f) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 30px rgba(0, 212, 255, 0.4));
  line-height: 1;
}

.logo-subtitle {
  font-family: 'Exo 2', sans-serif;
  font-size: clamp(0.85rem, 2.5vw, 1.1rem);
  font-weight: 300;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-top: 0.5rem;
}

@keyframes logoEntrance {
  from { opacity: 0; transform: translateY(-30px) scale(0.9); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* ── Difficulty Buttons ─────────────────────────────────────────────────── */
.difficulty-section {
  width: 100%;
  max-width: 700px;
  animation: fadeUp 0.6s 0.2s both;
}

.section-label {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  color: var(--text-secondary);
  text-transform: uppercase;
  margin-bottom: 1rem;
  text-align: center;
}

#difficulty-buttons {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

@media (max-width: 500px) {
  #difficulty-buttons { grid-template-columns: 1fr; }
}

.diff-btn {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 1.1rem 1.4rem;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 12px;
  cursor: pointer;
  font-family: 'Exo 2', sans-serif;
  color: var(--text-primary);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease, background 0.18s ease;
  backdrop-filter: blur(8px);
  text-align: left;
  overflow: hidden;
}

.diff-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  opacity: 0;
  transition: opacity 0.2s;
}

.diff-btn:hover {
  transform: translateY(-3px);
}

/* Color variants */
.diff-green  { --dc: var(--easy-color); }
.diff-red    { --dc: var(--hard-color); }
.diff-purple { --dc: var(--insane-color); }
.diff-gold   { --dc: var(--leg-color); }

.diff-btn::after {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 4px;
  height: 100%;
  background: var(--dc, var(--accent-cyan));
  border-radius: 4px 0 0 4px;
  transition: width 0.2s ease;
}

.diff-btn:hover {
  border-color: var(--dc, var(--accent-cyan));
  box-shadow: 0 0 20px color-mix(in srgb, var(--dc, var(--accent-cyan)) 30%, transparent),
              0 8px 24px rgba(0,0,0,0.4);
  background: color-mix(in srgb, var(--dc, var(--accent-cyan)) 8%, var(--bg-card));
}

.diff-btn.selected {
  border-color: var(--dc, var(--accent-cyan));
  background: color-mix(in srgb, var(--dc, var(--accent-cyan)) 12%, var(--bg-card));
  box-shadow: 0 0 24px color-mix(in srgb, var(--dc, var(--accent-cyan)) 40%, transparent),
              inset 0 0 20px color-mix(in srgb, var(--dc, var(--accent-cyan)) 5%, transparent);
}

.diff-btn.selected::after { width: 6px; }

.diff-name {
  font-family: 'Orbitron', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  color: var(--dc, var(--accent-cyan));
  letter-spacing: 0.1em;
}

.diff-grid {
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin-top: 0.2rem;
  letter-spacing: 0.05em;
}

.diff-record {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.72rem;
  color: var(--text-secondary);
  margin-top: 0.4rem;
  letter-spacing: 0.08em;
}

/* ── Play Button ────────────────────────────────────────────────────────── */
.play-section {
  animation: fadeUp 0.6s 0.35s both;
}

#play-btn {
  position: relative;
  padding: 1rem 4rem;
  font-family: 'Orbitron', sans-serif;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.25em;
  color: #fff;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  border: none;
  border-radius: 50px;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  box-shadow: 0 0 30px rgba(0, 212, 255, 0.3),
              0 4px 20px rgba(124, 58, 237, 0.3);
  overflow: hidden;
}

#play-btn::before {
  content: '';
  position: absolute;
  inset: 1px;
  border-radius: inherit;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  z-index: -1;
}

#play-btn:hover {
  transform: scale(1.05) translateY(-2px);
  box-shadow: 0 0 50px rgba(0, 212, 255, 0.5),
              0 8px 30px rgba(124, 58, 237, 0.4);
}

#play-btn:active {
  transform: scale(0.98) translateY(1px);
}

/* pulse ring */
#play-btn::after {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: 50px;
  border: 2px solid var(--accent-cyan);
  opacity: 0;
  animation: pulseRing 2s 1s infinite;
}

@keyframes pulseRing {
  0%   { opacity: 0.6; transform: scale(1); }
  100% { opacity: 0;   transform: scale(1.12); }
}

/* ── Info / Footer ──────────────────────────────────────────────────────── */
.menu-info {
  max-width: 600px;
  width: 100%;
  animation: fadeUp 0.6s 0.45s both;
}

.info-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 12px;
  padding: 1rem 1.4rem;
  backdrop-filter: blur(8px);
}

.info-card h3 {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  color: var(--accent-cyan);
  margin-bottom: 0.6rem;
}

.info-card p, .info-card li {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.info-card ol { padding-left: 1.2rem; }

.menu-footer {
  font-size: 0.72rem;
  color: var(--text-secondary);
  letter-spacing: 0.1em;
  text-align: center;
  animation: fadeUp 0.6s 0.55s both;
}

/* ── Animations ─────────────────────────────────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.15); border-radius: 3px; }

/* ── Locked difficulty ──────────────────────────────────────────────────── */
.diff-locked {
  opacity: 0.65;
  cursor: not-allowed !important;
}

.diff-locked:hover {
  transform: none !important;
}

.lock-badge {
  position: absolute;
  top: 0.55rem;
  right: 0.7rem;
  font-size: 0.65rem;
  font-family: 'Orbitron', sans-serif;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--dc, #fff);
  background: color-mix(in srgb, var(--dc, #fff) 15%, rgba(0,0,0,0.5));
  border: 1px solid color-mix(in srgb, var(--dc, #fff) 30%, transparent);
  border-radius: 6px;
  padding: 0.15rem 0.45rem;
}

/* ── Top bar ────────────────────────────────────────────────────────────── */
.menu-topbar {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 50;
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

#login-btn {
  font-family: 'Exo 2', sans-serif;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 8px;
  padding: 0.45rem 0.9rem;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
  backdrop-filter: blur(8px);
}

#login-btn:hover {
  color: var(--text-primary);
  border-color: var(--accent-cyan);
  background: rgba(0,212,255,0.06);
}

.hidden { display: none !important; }

.user-info {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 8px;
  padding: 0.4rem 0.75rem;
  backdrop-filter: blur(8px);
}

.user-avatar { font-size: 1rem; }

.user-avatar-img {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.user-name {
  font-family: 'Exo 2', sans-serif;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-primary);
}

.logout-btn {
  font-family: 'Exo 2', sans-serif;
  font-size: 0.7rem;
  color: var(--text-secondary);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  margin-left: 0.25rem;
  transition: color 0.15s;
}

.logout-btn:hover { color: #ef4444; }

/* ── Modal overlay ──────────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(13, 13, 43, 0.85);
  backdrop-filter: blur(16px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.modal-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 20px;
  padding: 2rem 2.5rem;
  width: 90%;
  max-width: 420px;
  position: relative;
  box-shadow: 0 0 60px rgba(0, 212, 255, 0.1);
  animation: modalEntrance 0.35s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

@keyframes modalEntrance {
  from { opacity: 0; transform: scale(0.85) translateY(20px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-close {
  position: absolute;
  top: 0.9rem;
  right: 1rem;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1rem;
  cursor: pointer;
  transition: color 0.15s;
  line-height: 1;
}

.modal-close:hover { color: var(--text-primary); }

.modal-title {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.2rem;
  font-weight: 900;
  text-align: center;
  margin-bottom: 0.4rem;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.modal-subtitle {
  font-size: 0.82rem;
  color: var(--text-secondary);
  text-align: center;
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

/* ── Social login buttons ───────────────────────────────────────────────── */
.social-login-btns {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.social-btn {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.7rem 1.1rem;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 10px;
  cursor: pointer;
  font-family: 'Exo 2', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: background 0.15s, border-color 0.15s, transform 0.12s;
  text-align: left;
}

.social-btn:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.2);
  transform: translateX(3px);
}

.social-btn svg { width: 20px; height: 20px; flex-shrink: 0; }

.social-btn-x { color: #fff; }
.social-btn-steam svg path { fill: #c7d5e0; }

/* ── Premium modal ──────────────────────────────────────────────────────── */
.premium-icon {
  font-size: 2.8rem;
  text-align: center;
  margin-bottom: 0.5rem;
}

.premium-price {
  font-family: 'Orbitron', sans-serif;
  font-size: 2rem;
  font-weight: 900;
  text-align: center;
  color: #ffd700;
  margin-bottom: 0.2rem;
  letter-spacing: 0.05em;
  filter: drop-shadow(0 0 10px rgba(255,215,0,0.4));
}

.premium-perks {
  list-style: none;
  margin: 1rem 0 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.premium-perks li {
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

#unlock-btn {
  width: 100%;
  padding: 0.85rem;
  font-family: 'Orbitron', sans-serif;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: #888;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 10px;
  cursor: not-allowed;
  transition: none;
  box-shadow: none;
  margin-bottom: 0.6rem;
  opacity: 0.7;
}

#unlock-btn:hover {
  transform: none;
  box-shadow: none;
}

#close-premium-cancel {
  width: 100%;
  padding: 0.7rem;
  font-family: 'Exo 2', sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: none;
  border: 1px solid var(--border-card);
  border-radius: 10px;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}

#close-premium-cancel:hover {
  color: var(--text-primary);
  border-color: rgba(255,255,255,0.25);
}

/* ── Auth error message ─────────────────────────────────────────────────── */
.auth-error {
  margin-bottom: 1rem;
  padding: 0.55rem 0.85rem;
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: 8px;
  font-size: 0.78rem;
  color: #fca5a5;
  text-align: center;
  line-height: 1.45;
}

/* ── Play-prompt skip button ────────────────────────────────────────────── */
.play-prompt-skip-btn {
  width: 100%;
  margin-top: 0.5rem;
  padding: 0.7rem;
  font-family: 'Exo 2', sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: none;
  border: 1px solid var(--border-card);
  border-radius: 10px;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}

.play-prompt-skip-btn:hover {
  color: var(--text-primary);
  border-color: rgba(255,255,255,0.25);
}