/* =====================================================================
   ReiCore™ — STYLE FILE
   Owner: Chandrabose Manivannan (Rei Groups™ / Tilak Groups™)
   Purpose: All colors, layout, light + dark mode, everything visual.
   ===================================================================== */


/* ===================== THEME VARIABLES =====================
   LIGHT MODE = "Peaceful Pastel" (cream, lavender, mint, peach)
   DARK MODE  = "Colorful Night"  (navy, glowing lavender, mint, coral)
   ========================================================= */

/* --- LIGHT MODE (default) --- */
:root,
[data-theme="light"] {
  --bg:            #FDFBF7;   /* soft cream */
  --bg-2:          #F5F1EA;   /* slightly darker cream for panels */
  --card:          #FFFFFF;   /* pure white cards */
  --card-hover:    #FEFCF8;   /* hover state */
  --border:        #EDE7DC;   /* soft cream border */
  --text:          #2A2A35;   /* deep charcoal */
  --text-dim:      #6B6B7B;   /* muted gray-purple */
  --text-faint:    #9A9AAA;   /* very light text */

  --accent-1:      #A78BFA;   /* soft lavender */
  --accent-2:      #7DD3C0;   /* mint green */
  --accent-3:      #FFB088;   /* warm peach */

  --accent-1-soft: rgba(167, 139, 250, 0.12);
  --accent-2-soft: rgba(125, 211, 192, 0.12);
  --accent-3-soft: rgba(255, 176, 136, 0.12);

  --shadow-sm:     0 2px 8px rgba(42, 42, 53, 0.06);
  --shadow-md:     0 6px 20px rgba(42, 42, 53, 0.08);
  --shadow-lg:     0 16px 40px rgba(42, 42, 53, 0.10);

  --radius:        14px;
  --radius-sm:     10px;
  --radius-lg:     20px;
}

/* --- DARK MODE --- */
[data-theme="dark"] {
  --bg:            #131320;   /* deep soft navy */
  --bg-2:          #1A1A2C;   /* panels */
  --card:          #1C1C2E;   /* cards */
  --card-hover:    #242438;   /* hover */
  --border:        #2A2A40;   /* subtle border */
  --text:          #F0F0F8;   /* soft white */
  --text-dim:      #A8A8BC;   /* muted */
  --text-faint:    #6A6A80;   /* very light */

  --accent-1:      #B79CFF;   /* glowing lavender */
  --accent-2:      #5EEAD4;   /* bright mint */
  --accent-3:      #FF8FA3;   /* warm coral */

  --accent-1-soft: rgba(183, 156, 255, 0.15);
  --accent-2-soft: rgba(94, 234, 212, 0.15);
  --accent-3-soft: rgba(255, 143, 163, 0.15);

  --shadow-sm:     0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md:     0 6px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg:     0 16px 40px rgba(0, 0, 0, 0.5);
}


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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.3s ease, color 0.3s ease;
}

img { max-width: 100%; display: block; }

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

a { color: inherit; text-decoration: none; }

input, textarea {
  font-family: inherit;
  font-size: inherit;
}


/* ===================== SOFT BACKGROUND GLOW ===================== */
body::before {
  content: "";
  position: fixed;
  top: -200px;
  left: -200px;
  width: 500px;
  height: 500px;
  background: var(--accent-1);
  border-radius: 50%;
  filter: blur(140px);
  opacity: 0.18;
  pointer-events: none;
  z-index: 0;
  animation: floatGlow 20s ease-in-out infinite;
}

body::after {
  content: "";
  position: fixed;
  bottom: -250px;
  right: -200px;
  width: 550px;
  height: 550px;
  background: var(--accent-2);
  border-radius: 50%;
  filter: blur(140px);
  opacity: 0.18;
  pointer-events: none;
  z-index: 0;
  animation: floatGlow 24s ease-in-out infinite reverse;
}

@keyframes floatGlow {
  0%, 100% { transform: translate(0, 0); }
  50%      { transform: translate(80px, 60px); }
}

/* Keep content above the glow */
header, nav, main, section, footer, .settings-panel, .toast {
  position: relative;
  z-index: 1;
}


/* ===================== HEADER ===================== */
.site-header {
  padding: 22px 20px 14px;
  text-align: center;
  position: relative;
}

.site-title {
  font-size: clamp(24px, 5vw, 34px);
  font-weight: 800;
  letter-spacing: -0.8px;
  background: linear-gradient(120deg, var(--accent-1), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* Corner buttons (settings left, theme right) */
.corner-btn {
  position: absolute;
  top: 22px;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: var(--card);
  border: 1px solid var(--border);
  display: grid;
  place-items: center;
  font-size: 18px;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-sm);
  -webkit-tap-highlight-color: transparent;
}

.corner-btn:hover {
  background: var(--card-hover);
  border-color: var(--accent-1);
  transform: translateY(-1px);
}

.corner-btn:active {
  transform: scale(0.94);
}

.corner-btn.left  { left: 20px; }
.corner-btn.right { right: 20px; }


/* ===================== NAVIGATION BAR ===================== */
.site-nav {
  display: flex;
  justify-content: center;
  gap: 8px;
  padding: 8px 20px 20px;
  flex-wrap: wrap;
}

.nav-link {
  padding: 10px 20px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-dim);
  background: transparent;
  border: 1px solid transparent;
  transition: all 0.2s ease;
  -webkit-tap-highlight-color: transparent;
}

.nav-link:hover {
  color: var(--text);
  background: var(--card);
  border-color: var(--border);
}

.nav-link.active {
  color: white;
  background: linear-gradient(120deg, var(--accent-1), var(--accent-2));
  border-color: transparent;
  box-shadow: 0 4px 14px var(--accent-1-soft);
}


/* ===================== MAIN CONTAINER ===================== */
.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px 80px;
}

.page-intro {
  text-align: center;
  margin-bottom: 32px;
  color: var(--text-dim);
  font-size: 15px;
}

.page-title {
  text-align: center;
  font-size: clamp(22px, 4vw, 28px);
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 8px;
  color: var(--text);
}


/* ===================== UPDATE CARDS ===================== */
.update-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  margin-bottom: 18px;
  box-shadow: var(--shadow-sm);
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
}

.update-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-1), var(--accent-2), var(--accent-3));
  opacity: 0;
  transition: opacity 0.25s ease;
}

.update-card:hover {
  border-color: var(--accent-1);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.update-card:hover::before { opacity: 1; }

.update-card.special {
  border-color: var(--accent-3);
  background: linear-gradient(135deg, var(--card), var(--accent-3-soft));
}

.update-card.special::before { opacity: 1; }

/* Card header row */
.card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}

.card-topic {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.3px;
  color: var(--text);
  flex: 1;
  min-width: 200px;
}

/* Version + date pill */
.card-meta {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  align-items: center;
}

.pill {
  font-size: 11px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 999px;
  letter-spacing: 0.3px;
  text-transform: uppercase;
  white-space: nowrap;
}

.pill-version {
  background: var(--accent-1-soft);
  color: var(--accent-1);
}

.pill-date {
  background: var(--accent-2-soft);
  color: var(--accent-2);
}

.pill-special {
  background: var(--accent-3-soft);
  color: var(--accent-3);
}

/* Description */
.card-desc {
  color: var(--text-dim);
  font-size: 14.5px;
  line-height: 1.65;
  margin-bottom: 16px;
}

/* Links list */
.card-links {
  border-top: 1px solid var(--border);
  padding-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.card-links-title {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 4px;
}

.link-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: var(--bg-2);
  border: 1px solid transparent;
  transition: all 0.18s ease;
  text-decoration: none;
  color: inherit;
  -webkit-tap-highlight-color: transparent;
}

.link-item:hover {
  background: var(--card-hover);
  border-color: var(--accent-2);
  transform: translateX(3px);
}

.link-item:active { transform: scale(0.99); }

.link-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.link-url {
  font-size: 12px;
  color: var(--text-faint);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 40%;
}

.link-arrow {
  color: var(--accent-2);
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.link-item:hover .link-arrow { transform: translateX(3px); }


/* ===================== EMPTY STATE ===================== */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-dim);
}

.empty-emoji {
  font-size: 48px;
  margin-bottom: 12px;
  opacity: 0.6;
}


/* ===================== ARCHIVE LINK (World page, after 25+) ===================== */
.archive-link {
  display: block;
  text-align: center;
  margin: 30px auto 0;
  padding: 18px 24px;
  max-width: 420px;
  background: var(--card);
  border: 2px dashed var(--accent-1);
  border-radius: var(--radius);
  color: var(--accent-1);
  font-weight: 700;
  font-size: 15px;
  transition: all 0.2s ease;
}

.archive-link:hover {
  background: var(--accent-1-soft);
  transform: translateY(-2px);
}


/* ===================== SETTINGS PANEL ===================== */
.settings-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 900;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.settings-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.settings-panel {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: min(340px, 88vw);
  background: var(--bg-2);
  border-right: 1px solid var(--border);
  z-index: 901;
  padding: 24px 20px;
  transform: translateX(-100%);
  transition: transform 0.3s cubic-bezier(0.2, 0.9, 0.3, 1);
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}

.settings-panel.open { transform: translateX(0); }

.settings-title {
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 4px;
  letter-spacing: -0.4px;
}

.settings-subtitle {
  font-size: 12px;
  color: var(--text-dim);
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 600;
}

.settings-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 14px 16px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--text);
  transition: all 0.18s ease;
  text-align: left;
  -webkit-tap-highlight-color: transparent;
}

.settings-btn:hover {
  background: var(--card-hover);
  border-color: var(--accent-1);
  transform: translateX(3px);
}

.settings-btn:active { transform: scale(0.98); }

.settings-btn-label {
  display: flex;
  align-items: center;
  gap: 12px;
}

.settings-btn-icon {
  font-size: 18px;
  width: 24px;
  text-align: center;
}

.settings-btn-arrow {
  color: var(--text-faint);
  transition: transform 0.2s ease;
}

.settings-btn:hover .settings-btn-arrow { transform: translateX(3px); }

.settings-version {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  background: var(--accent-1-soft);
  border: 1px solid var(--accent-1);
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
  font-size: 14px;
  font-weight: 700;
  color: var(--accent-1);
}

.settings-version-code {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 13px;
  letter-spacing: 0.5px;
}

.settings-close {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 16px;
  transition: all 0.18s ease;
}

.settings-close:hover {
  background: var(--card-hover);
  color: var(--text);
}

.settings-divider {
  height: 1px;
  background: var(--border);
  margin: 20px 0;
}

.settings-footer {
  font-size: 11px;
  color: var(--text-faint);
  text-align: center;
  line-height: 1.6;
}


/* ===================== FOOTER ===================== */
.site-footer {
  text-align: center;
  padding: 32px 20px;
  border-top: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 12.5px;
  line-height: 1.7;
}

.site-footer strong {
  color: var(--text);
  font-weight: 700;
}

.site-footer .heart { color: var(--accent-3); }


/* ===================== TOAST ===================== */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--card);
  border: 1px solid var(--accent-2);
  color: var(--text);
  padding: 12px 22px;
  border-radius: 999px;
  font-size: 13.5px;
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s cubic-bezier(0.2, 0.9, 0.3, 1);
  z-index: 2000;
  white-space: nowrap;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}


/* ===================== MOBILE ===================== */
@media (max-width: 600px) {
  .site-header { padding: 20px 16px 12px; }
  .corner-btn { top: 20px; width: 38px; height: 38px; font-size: 16px; }
  .corner-btn.left  { left: 14px; }
  .corner-btn.right { right: 14px; }

  .site-nav {
    gap: 6px;
    padding: 8px 14px 16px;
    overflow-x: auto;
    justify-content: flex-start;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }
  .site-nav::-webkit-scrollbar { display: none; }

  .nav-link {
    padding: 8px 16px;
    font-size: 13px;
    flex-shrink: 0;
  }

  .container { padding: 0 14px 60px; }

  .update-card {
    padding: 18px 16px;
    margin-bottom: 14px;
  }

  .card-topic { font-size: 16.5px; }

  .link-item {
    padding: 9px 12px;
    flex-wrap: wrap;
  }

  .link-url { max-width: 100%; font-size: 11px; }

  .settings-panel { padding: 20px 16px; }
}


/* ===================== REDUCED 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;
  }
}


/* ===================== SCROLLBAR ===================== */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover { background: var(--accent-1); }