/* ═══════════════════════════════════════════════
   SHINOMURA — Global Design System
   Fonts: Playfair Display · DM Sans · Space Mono
   Themes: deep-space · nebula · aurora · void · cosmic · stellar
═══════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,700;0,900;1,400&family=DM+Sans:wght@300;400;500&family=Space+Mono:wght@400;700&display=swap');

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   CSS VARIABLES — DEEP SPACE (default)
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
:root {
  --color-violet:      #7c3aed;
  --color-indigo:      #4f46e5;
  --color-lavender:    #a78bfa;
  --color-mint:        #6ee7b7;
  --color-pink:        #f9a8d4;
  --color-gold:        #fbbf24;
  --color-starlight:   #e2e8f0;
  --color-deep-space:  #0a0a1a;

  --bg-page:           #0a0a1a;
  --bg-raised:         #0f0f28;
  --bg-surface:        rgba(255,255,255,0.04);
  --bg-card:           rgba(255,255,255,0.07);
  --bg-card-hover:     rgba(255,255,255,0.11);
  --bg-gradient:       linear-gradient(135deg, #7c3aed, #4f46e5);

  --text-primary:      #e2e8f0;
  --text-secondary:    #a78bfa;
  --text-muted:        #64748b;
  --text-accent:       #6ee7b7;

  --border-subtle:     rgba(167,139,250,0.15);
  --border-mid:        rgba(167,139,250,0.3);
  --border-strong:     rgba(167,139,250,0.5);

  --font-display:      'Playfair Display', serif;
  --font-body:         'DM Sans', sans-serif;
  --font-mono:         'Space Mono', monospace;

  --radius-sm:         8px;
  --radius-md:         12px;
  --radius-lg:         20px;

  --ease:              cubic-bezier(0.4, 0, 0.2, 1);

  --accent:            #5b21b6;
  --accent-glow:       rgba(124, 58, 237, 0.30);
  --accent-hi:         #a78bfa;
  --sep:               #13132a;
  --cursor:            #a78bfa;
  --dot:               #7c3aed;
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   THEME OVERRIDES
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */

html[data-theme="nebula"] {
  --bg-page:       #110f1d; --bg-raised:    #18152a;
  --color-violet:  #7c3f9f; --color-lavender: #d47fc8; --color-mint: #e896d8;
  --bg-gradient:   linear-gradient(135deg, #7c3f9f, #a050c8);
  --text-secondary: #d47fc8; --text-accent: #e896d8;
  --border-subtle: rgba(212,127,200,0.15); --border-mid: rgba(212,127,200,0.3); --border-strong: rgba(212,127,200,0.5);
  --accent: #7c3f9f; --accent-glow: rgba(124,63,159,0.35); --accent-hi: #d47fc8;
  --sep: #201830; --cursor: #d47fc8; --dot: #a055b8;
}

html[data-theme="aurora"] {
  --bg-page:       #091624; --bg-raised:    #0d1e30;
  --color-violet:  #237d70; --color-lavender: #6dcfc2; --color-mint: #93e6c8;
  --bg-gradient:   linear-gradient(135deg, #237d70, #1a9080);
  --text-secondary: #6dcfc2; --text-accent: #93e6c8;
  --border-subtle: rgba(109,207,194,0.15); --border-mid: rgba(109,207,194,0.3); --border-strong: rgba(109,207,194,0.5);
  --accent: #237d70; --accent-glow: rgba(35,125,112,0.35); --accent-hi: #6dcfc2;
  --sep: #0c1e2c; --cursor: #6dcfc2; --dot: #237d70;
}

html[data-theme="void"] {
  --bg-page:       #07070f; --bg-raised:    #0c0c18;
  --color-violet:  #35246a; --color-lavender: #7060bb; --color-mint: #9080dd;
  --bg-gradient:   linear-gradient(135deg, #35246a, #4a3890);
  --text-primary:  #ccc6e8; --text-secondary: #7060bb; --text-muted: #403860; --text-accent: #9080dd;
  --border-subtle: rgba(112,96,187,0.12); --border-mid: rgba(112,96,187,0.25); --border-strong: rgba(112,96,187,0.45);
  --accent: #35246a; --accent-glow: rgba(53,36,106,0.35); --accent-hi: #7060bb;
  --sep: #0d0b1a; --cursor: #7060bb; --dot: #35246a;
}

html[data-theme="cosmic"] {
  --bg-page:       #0c0c20; --bg-raised:    #12122e;
  --color-violet:  #6c4fb0; --color-lavender: #c9a050; --color-mint: #e8c070;
  --bg-gradient:   linear-gradient(135deg, #6c4fb0, #9070d0);
  --text-secondary: #c9a050; --text-accent: #e8c070;
  --border-subtle: rgba(201,160,80,0.15); --border-mid: rgba(201,160,80,0.3); --border-strong: rgba(201,160,80,0.5);
  --accent: #6c4fb0; --accent-glow: rgba(108,79,176,0.35); --accent-hi: #c9a050;
  --sep: #14122e; --cursor: #c9a050; --dot: #c9a050;
}

html[data-theme="stellar"] {
  --bg-page:       #0e0e16; --bg-raised:    #141420;
  --color-violet:  #3a7bd5; --color-lavender: #90bef5; --color-mint: #b0d8ff;
  --bg-gradient:   linear-gradient(135deg, #3a7bd5, #5090e8);
  --text-secondary: #90bef5; --text-accent: #b0d8ff;
  --border-subtle: rgba(144,190,245,0.15); --border-mid: rgba(144,190,245,0.3); --border-strong: rgba(144,190,245,0.5);
  --accent: #3a7bd5; --accent-glow: rgba(58,123,213,0.35); --accent-hi: #90bef5;
  --sep: #101520; --cursor: #90bef5; --dot: #3a7bd5;
}


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   THEME BUTTONS
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */

.t-btn {
  -webkit-appearance: none;
  appearance: none;
  background: var(--bg-raised);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  padding: 0.3rem 0.7rem;
  cursor: pointer;
  text-transform: lowercase;
  line-height: 1;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease),
              box-shadow 0.2s var(--ease), background 0.35s var(--ease);
}

.t-btn[aria-pressed="true"] {
  border-color: var(--accent);
  color: var(--accent-hi);
  box-shadow: 0 0 8px var(--accent-glow);
}

/* Per-theme hover colors — hardcoded so they show
   regardless of which theme is currently active    */
.t-btn[data-t="deep-space"]:hover { color: #9b87d1; border-color: #533483; box-shadow: 0 0 10px rgba(83,52,131,0.5);   }
.t-btn[data-t="nebula"]:hover     { color: #d47fc8; border-color: #7c3f9f; box-shadow: 0 0 10px rgba(124,63,159,0.5);  }
.t-btn[data-t="aurora"]:hover     { color: #6dcfc2; border-color: #237d70; box-shadow: 0 0 10px rgba(35,125,112,0.5);  }
.t-btn[data-t="void"]:hover       { color: #7060bb; border-color: #35246a; box-shadow: 0 0 10px rgba(53,36,106,0.5);   }
.t-btn[data-t="cosmic"]:hover     { color: #c9a050; border-color: #6c4fb0; box-shadow: 0 0 10px rgba(201,160,80,0.5);  }
.t-btn[data-t="stellar"]:hover    { color: #90bef5; border-color: #3a7bd5; box-shadow: 0 0 10px rgba(58,123,213,0.5);  }


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   THEME PICKER COMPONENT
   Open/close driven by JS adding/removing .open
   on .theme-picker. No CSS :hover tricks.
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */

.theme-picker {
  position: relative;
  display: inline-block;
}

/* Toggle button */
.theme-toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-raised);
  border: 1px solid var(--accent);
  color: var(--accent-hi);
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  padding: 0.35rem 0.75rem;
  cursor: pointer;
  text-transform: lowercase;
  line-height: 1;
  box-shadow: 0 0 8px var(--accent-glow);
  transition: box-shadow 0.2s var(--ease),
              border-color 0.35s var(--ease),
              color 0.35s var(--ease),
              background 0.35s var(--ease);
}
.theme-picker.open .theme-toggle,
.theme-toggle:hover {
  box-shadow: 0 0 16px var(--accent-glow);
}

.theme-toggle-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--dot);
  flex-shrink: 0;
  transition: background 0.35s var(--ease);
}

.theme-toggle-arrow {
  font-size: 0.5rem;
  opacity: 0.65;
  line-height: 1;
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}
.theme-picker.open .theme-toggle-arrow {
  transform: rotate(180deg);
  opacity: 1;
}

/* Drawer — closed by default, opened by .open class */
.theme-drawer {
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  background: var(--bg-raised);
  border: 1px solid var(--accent);
  padding: 0.45rem;
  min-width: 118px;
  z-index: 9000; /* well above nav z-index:100 and any other content */

  /* Closed state */
  opacity: 0;
  transform: translateY(-6px) scale(0.97);
  pointer-events: none;

  transition: opacity 0.18s var(--ease),
              transform 0.18s var(--ease),
              border-color 0.35s var(--ease),
              background 0.35s var(--ease),
              box-shadow 0.35s var(--ease);

  box-shadow: 0 10px 28px rgba(0,0,0,0.55), 0 0 16px var(--accent-glow);
}

/* Open state — JS adds .open to .theme-picker */
.theme-picker.open .theme-drawer {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.theme-drawer .t-btn {
  width: 100%;
  text-align: left;
}


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

html { scroll-behavior: smooth; }

body {
  background-color: var(--bg-page);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  font-weight: 300;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background-color 0.35s var(--ease), color 0.35s var(--ease);
}

/* Grain overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9999;
  opacity: 0.35;
}

/* Scanlines */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0,0,0,0.06) 2px, rgba(0,0,0,0.06) 4px);
  pointer-events: none;
  z-index: 9998;
}

h1, h2, h3, h4, h5, h6 { font-family: var(--font-display); font-weight: 700; line-height: 1.15; color: var(--text-primary); }
h1 { font-size: clamp(2.2rem, 6vw, 4rem); font-weight: 900; }
h2 { font-size: clamp(1.6rem, 4vw, 2.4rem); }
h3 { font-size: clamp(1.2rem, 3vw, 1.6rem); }

p { margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }

a { color: var(--color-lavender); text-decoration: none; transition: color 0.2s var(--ease); }
a:hover { color: var(--color-mint); }

::selection { background: var(--accent-glow); color: #fff; }

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-page); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-violet); }

.page-wrap { max-width: 960px; margin: 0 auto; padding: 2rem 1.5rem 5rem; position: relative; }

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-decoration: none;
  margin-bottom: 2.5rem;
  border-bottom: 1px dashed transparent;
  transition: color 0.2s, border-color 0.2s;
}
.back-link:hover { color: var(--color-lavender); border-bottom-color: var(--color-lavender); }

.badge { display: inline-block; padding: 3px 10px; border-radius: 20px; font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.06em; text-transform: lowercase; }
.badge-violet { background: rgba(124,58,237,0.15); color: var(--color-lavender); border: 1px solid rgba(124,58,237,0.35); }
.badge-mint   { background: rgba(110,231,183,0.1);  color: var(--color-mint);     border: 1px solid rgba(110,231,183,0.25); }
.badge-pink   { background: rgba(249,168,212,0.1);  color: var(--color-pink);     border: 1px solid rgba(249,168,212,0.25); }
.badge-gold   { background: rgba(251,191,36,0.1);   color: var(--color-gold);     border: 1px solid rgba(251,191,36,0.25); }

.btn { display: inline-flex; align-items: center; gap: 8px; padding: 10px 22px; border-radius: var(--radius-sm); font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.06em; cursor: pointer; transition: all 0.2s var(--ease); text-decoration: none; }
.btn-primary { background: var(--bg-gradient); color: #fff; border: none; }
.btn-primary:hover { opacity: 0.88; transform: translateY(-1px); color: #fff; }
.btn-ghost { background: transparent; color: var(--color-lavender); border: 1px solid var(--border-mid); }
.btn-ghost:hover { background: var(--bg-surface); border-color: var(--border-strong); color: var(--color-lavender); transform: translateY(-1px); }

.card { background: var(--bg-card); border: 1px solid var(--border-subtle); border-radius: var(--radius-md); padding: 1.5rem; transition: background 0.2s var(--ease), border-color 0.2s var(--ease), transform 0.2s var(--ease); }
.card:hover { background: var(--bg-card-hover); border-color: var(--border-mid); transform: translateY(-2px); }

.section-label { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 1.5rem; }

hr { border: none; border-top: 1px solid var(--border-subtle); margin: 2rem 0; }

@media (max-width: 600px) {
  .page-wrap { padding: 1.5rem 1rem 4rem; }
}