/* layout.css — Shared app-shell styles for all sidebar pages
   Covers: reset, design tokens, sidebar, nav, topbar, buttons, mobile nav.
   Load this instead of app.css on any page that uses the sidebar layout. */

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

/* ─── DESIGN TOKENS ─── */
/* Color variables now defined in theme.css (loaded before layout.css) */
:root {
  --sidebar-w: 216px;
}

/* ─── BASE ─── */
[hidden] { display: none !important; }
body { font-family: 'Inter', sans-serif; background: var(--bg); color: var(--text); min-height: 100vh; display: flex; }

/* ─── SIDEBAR ─── */
.sidebar { width: var(--sidebar-w); height: 100%; background: var(--bg-surface); border-right: 1px solid var(--border); display: flex; flex-direction: column; position: fixed; left: 0; top: 0; bottom: 0; z-index: 50; }
.sidebar-logo { height: 56px; padding: 0 20px; display: flex; align-items: center; border-bottom: 1px solid var(--border); flex-shrink: 0; }
.logo-text { font-family: 'Inter', sans-serif; font-size: 20px; font-weight: 800; letter-spacing: -0.02em; color: var(--text); text-decoration: none; }
.logo-text span { color: var(--primary); }
.sidebar-nav { padding: 12px 0; flex: 1; overflow-y: auto; }
.nav-group-label { padding: 12px 20px 6px; font-size: 10px; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-dim); }
.nav-item { display: flex; align-items: center; gap: 10px; padding: 8px 20px; color: var(--text-dim); font-size: 13px; font-weight: 500; text-decoration: none; transition: all 0.15s; position: relative; }
.nav-item svg { flex-shrink: 0; }
.nav-item:hover { color: var(--text-muted); background: rgba(255,255,255,0.025); }
.nav-item.active { color: var(--text); background: var(--primary-dim); }
.nav-item.active::before { content: ''; position: absolute; left: 0; top: 4px; bottom: 4px; width: 3px; background: var(--primary); border-radius: 0 2px 2px 0; }
.nav-badge { width: 7px; height: 7px; border-radius: 50%; background: var(--red, #f87171); margin-left: auto; flex-shrink: 0; animation: navBadgePulse 2s ease-in-out infinite; }
.nav-badge[hidden] { display: none; }
@keyframes navBadgePulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }
.sidebar-bottom { border-top: 1px solid var(--border); padding: 16px 20px; flex-shrink: 0; }
.support-label { font-size: 11px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-dim); margin-bottom: 10px; }
.support-btns { display: flex; gap: 8px; margin-bottom: 16px; }
.support-btn { width: 36px; height: 36px; background: var(--bg-card); border: 1px solid var(--border); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: var(--text-muted); text-decoration: none; transition: all 0.15s; }
.support-btn:hover { border-color: var(--primary); color: var(--primary); }
.legal-links { display: flex; flex-direction: column; gap: 4px; }
.legal-link { font-size: 11px; color: var(--text-dim); text-decoration: none; line-height: 1.6; }
.legal-link:hover { color: var(--text-muted); }

/* ─── MAIN + TOPBAR ─── */
.main { margin-left: var(--sidebar-w); flex: 1; min-height: 100vh; overflow-x: hidden; }
.topbar { height: 56px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; padding: 0 28px; background: rgba(var(--bg-rgb),0.85); backdrop-filter: blur(16px); position: sticky; top: 0; z-index: 40; flex-shrink: 0; }
.topbar-left { display: flex; align-items: center; gap: 12px; }
.topbar-title { font-family: 'Inter', sans-serif; font-size: 15px; font-weight: 700; letter-spacing: -0.01em; }
.topbar-user { display: flex; align-items: center; gap: 10px; }
.topbar-actions { display: flex; align-items: center; gap: 10px; }
.user-login { font-size: 13px; font-weight: 500; color: var(--text-muted); }
.server-badge { color: var(--blue, #3b82f6); flex-shrink: 0; }
.logout-btn { width: 30px; height: 30px; background: var(--bg-card); border: 1px solid var(--border); border-radius: 7px; display: flex; align-items: center; justify-content: center; color: var(--text-dim); text-decoration: none; cursor: pointer; transition: all 0.15s; }
.logout-btn:hover { border-color: var(--red); color: var(--red); }

/* ─── CONTENT ─── */
.content { padding: 24px 28px; }
.page-header { margin-bottom: 24px; }
.page-title { font-family: 'Inter', sans-serif; font-size: 26px; font-weight: 800; letter-spacing: -0.03em; margin-bottom: 6px; }
.page-subtitle { font-size: 14px; color: var(--text-muted); }
.panel-label { font-size: 10px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-dim); }

/* ─── BUTTONS ─── */
.btn-primary { display: inline-flex; align-items: center; gap: 7px; padding: 9px 18px; background: var(--primary); border: none; border-radius: 8px; color: #fff; font-size: 13px; font-weight: 600; font-family: 'Inter', sans-serif; cursor: pointer; text-decoration: none; transition: all 0.2s; box-shadow: 0 2px 12px var(--primary-glow); }
.btn-primary:hover { background: var(--primary-light); }
.btn-ghost { display: inline-flex; align-items: center; gap: 7px; padding: 8px 16px; background: transparent; border: 1px solid var(--border); border-radius: 8px; color: var(--text-muted); font-size: 13px; font-weight: 500; font-family: 'Inter', sans-serif; cursor: pointer; text-decoration: none; transition: all 0.2s; }
.btn-ghost:hover { border-color: var(--border-strong); color: var(--text); }
.btn-ghost-red { display: inline-flex; align-items: center; gap: 7px; padding: 8px 16px; background: transparent; border: 1px solid rgba(239,68,68,0.25); border-radius: 8px; color: var(--red); font-size: 13px; font-weight: 500; font-family: 'Inter', sans-serif; cursor: pointer; transition: all 0.2s; }
.btn-ghost-red:hover { background: rgba(239,68,68,0.08); border-color: rgba(239,68,68,0.45); }
.btn-icon { width: 32px; height: 32px; background: var(--bg-card); border: 1px solid var(--border); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: var(--text-muted); cursor: pointer; transition: all 0.15s; }
.btn-icon:hover { border-color: var(--border-strong); color: var(--text); }
.btn-login { padding: 6px 16px; background: transparent; border: 1px solid var(--border); border-radius: 7px; color: var(--text-muted); font-size: 13px; font-weight: 500; font-family: 'Inter', sans-serif; text-decoration: none; transition: all 0.15s; }
.btn-login:hover { border-color: var(--primary); color: var(--primary); }
.btn-register { padding: 6px 16px; background: var(--primary); border: 1px solid transparent; border-radius: 7px; color: #fff; font-size: 13px; font-weight: 600; font-family: 'Inter', sans-serif; text-decoration: none; transition: all 0.15s; box-shadow: 0 0 16px var(--primary-glow); }
.btn-register:hover { background: var(--primary-light); }

/* ─── MOBILE NAV ─── */
.menu-toggle { display: none; }
.nav-backdrop { display: none; }

@media (max-width: 768px) {
  :root { --sidebar-w: 0px; }
  .nav-backdrop { display: block; position: fixed; inset: 0; background: rgba(0,0,0,0.55); backdrop-filter: blur(3px); z-index: 150; opacity: 0; pointer-events: none; transition: opacity 0.25s ease; }
  .nav-backdrop.open { opacity: 1; pointer-events: all; }
  .sidebar { transform: translateX(-100%); transition: transform 0.28s cubic-bezier(0.4,0,0.2,1); width: 260px !important; z-index: 200; box-shadow: 8px 0 40px rgba(0,0,0,0.5); }
  .sidebar.open { transform: translateX(0); }
  .main { margin-left: 0; }
  .topbar { padding: 0 16px; }
  .content { padding: 16px; }
  .menu-toggle { display: flex; align-items: center; justify-content: center; width: 36px; height: 36px; flex-shrink: 0; background: var(--bg-card); border: 1px solid var(--border); border-radius: 9px; color: var(--text-muted); cursor: pointer; }
}