/* shared.css */
:root {
  --bg:       #0f0e0c;
  --bg2:      #1a1814;
  --bg3:      #252220;
  --border:   #2a2620;
  --text:     #f0ece4;
  --text2:    #b0a898;
  --muted:    #6a6460;
  --accent:   #f07830;
  --accent2:  #4a8af0;
  --success:  #23a55a;
  --warning:  #f0b232;
  --danger:   #f23f42;
  --radius:   10px;
  --radius-sm:6px;
  --shadow:   0 4px 24px rgba(0,0,0,0.4);
  --trans:    0.2s cubic-bezier(0.4,0,0.2,1);
}

[data-theme="light"] {
  --bg:     #f5f3ee;
  --bg2:    #ffffff;
  --bg3:    #ede9e0;
  --border: #d8d4cc;
  --text:   #1a1814;
  --text2:  #4a4640;
  --muted:  #8a8480;
  --shadow: 0 4px 24px rgba(0,0,0,0.08);
}

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

body {
  font-family: 'Segoe UI','Noto Sans JP',system-ui,sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
  transition: background var(--trans), color var(--trans);
}

a { color: var(--accent); text-decoration: none; }
a:hover { opacity: 0.8; }

.container { max-width: 900px; margin: 0 auto; padding: 0 24px; }

/* NAV */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  backdrop-filter: blur(12px);
}
.nav-inner {
  max-width: 900px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  height: 56px; gap: 16px;
}
.nav-logo {
  font-family: monospace; font-size: 15px; font-weight: 700;
  color: var(--text); white-space: nowrap;
}
.nav-logo span { color: var(--accent); }
.nav-links { display: flex; gap: 4px; list-style: none; }
.nav-links a {
  padding: 6px 12px; border-radius: var(--radius-sm);
  font-size: 13px; font-weight: 600; color: var(--text2);
  transition: all var(--trans);
}
.nav-links a:hover, .nav-links a.active {
  color: var(--accent); background: rgba(240,120,48,0.08);
}
.nav-actions { display: flex; gap: 8px; align-items: center; }

/* THEME TOGGLE */
.theme-btn {
  width: 36px; height: 36px; border-radius: var(--radius-sm);
  border: 1px solid var(--border); background: var(--bg3);
  color: var(--text2); font-size: 16px; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--trans);
}
.theme-btn:hover { border-color: var(--accent); color: var(--accent); }

/* LANG TOGGLE */
.lang-btn {
  padding: 6px 12px; border-radius: var(--radius-sm);
  border: 1px solid var(--border); background: var(--bg3);
  color: var(--text2); font-size: 12px; font-weight: 700;
  font-family: monospace; cursor: pointer;
  transition: all var(--trans);
}
.lang-btn:hover, .lang-btn.active {
  border-color: var(--accent); color: var(--accent);
  background: rgba(240,120,48,0.08);
}

/* CARD */
.card {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px;
  transition: border-color var(--trans);
}

/* BADGE */
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 3px 10px; border-radius: 20px;
  font-size: 11px; font-weight: 700; font-family: monospace;
  text-transform: uppercase; letter-spacing: 0.5px;
}
.badge-success { background: rgba(35,165,90,0.15);  color: var(--success); }
.badge-warning { background: rgba(240,178,50,0.15); color: var(--warning); }
.badge-danger  { background: rgba(242,63,66,0.15);  color: var(--danger); }
.badge-muted   { background: rgba(106,100,96,0.15); color: var(--muted); }
.badge-accent  { background: rgba(240,120,48,0.15); color: var(--accent); }
.badge-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: currentColor;
  animation: pulse 2s infinite;
}

/* BUTTON */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 20px; border-radius: var(--radius);
  font-size: 14px; font-weight: 600; border: none; cursor: pointer;
  transition: all var(--trans); font-family: inherit;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { opacity: 0.88; transform: translateY(-1px); }
.btn-secondary {
  background: var(--bg3); color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }

/* INPUT */
.input {
  width: 100%; padding: 10px 14px;
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: var(--radius); color: var(--text); font-size: 14px;
  font-family: inherit; outline: none; transition: border-color var(--trans);
}
.input:focus { border-color: var(--accent); }
.input::placeholder { color: var(--muted); }

/* SECTION LABEL */
.label {
  font-family: monospace; font-size: 11px; letter-spacing: 2px;
  text-transform: uppercase; color: var(--accent);
  display: flex; align-items: center; gap: 8px; margin-bottom: 8px;
}
.label::after {
  content: ''; display: block; width: 32px; height: 1px;
  background: var(--accent);
}

/* FOOTER */
.footer {
  border-top: 1px solid var(--border); padding: 24px;
  margin-top: 80px; text-align: center;
  font-size: 12px; color: var(--muted); font-family: monospace;
}
.footer a { color: var(--muted); }
.footer a:hover { color: var(--accent); }

/* ANIMATIONS */
@keyframes pulse {
  0%,100% { opacity:1; } 50% { opacity:0.4; }
}
@keyframes fadeUp {
  from { opacity:0; transform:translateY(16px); }
  to   { opacity:1; transform:translateY(0); }
}
.fade-up { animation: fadeUp 0.5s ease forwards; }

/* LANG SECTIONS */
[data-lang] { display: none; }
[data-lang].active { display: block; }

/* RESPONSIVE */
@media (max-width: 640px) {
  .nav-links { display: none; }
  .container { padding: 0 16px; }
}