/* EdHelfy — Sidebar, topbar, main layout, bottom nav, FAB, search, toast, login, nav buttons */

  /* ═══ SIDEBAR ═══ */
  .sidebar {
    width: 72px;
    background: var(--sidebar-bg);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    align-items: center;
    position: fixed;
    top: 0; left: 0; bottom: 0;
    z-index: 100;
    padding: 16px 0;
    transition: width 0.3s var(--transition);
    overflow: hidden;
  }
  .sidebar:hover { width: 240px; }
  .sidebar:hover .nav-label { opacity: 1; }
  .sidebar:hover .logo-full { opacity: 1; width: auto; }
  .sidebar:hover .logo-mini { opacity: 0; width: 0; }

  .logo {
    display: flex; align-items: center; gap: 14px;
    padding: 14px 10px 18px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 8px; width: 100%;
    overflow: hidden; white-space: nowrap;
  }
  .logo-icon {
    width: 22px; height: 22px;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
  }
  .logo-full { opacity: 0; transition: opacity 0.2s; overflow: hidden; }
  .logo-mini { transition: opacity 0.2s; }
  .logo-title { font-family: var(--font-display); font-size: 22px; font-weight: 800; letter-spacing: -0.5px; white-space: nowrap; background: linear-gradient(90deg, #2d7dd2, #d97706); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
  .logo-sub { font-size: 9px; color: rgba(255,255,255,0.45); letter-spacing: 0.05em; }

  .sidebar-nav { flex: 1; width: 100%; padding: 0 10px; display: flex; flex-direction: column; gap: 2px; }

  .nav-btn {
    display: flex; align-items: center; gap: 14px;
    padding: 12px 16px;
    border: none; background: transparent;
    color: #374151;
    font-size: 13px; font-weight: 500;
    border-radius: 8px;
    cursor: pointer; font-family: var(--font-body);
    transition: all 0.15s; text-align: left;
    width: 100%; white-space: nowrap; overflow: hidden;
    position: relative;
  }
  .nav-btn:hover { background: #F3E8FF; color: #7C3AED; }
  .nav-btn.active { background: #EDE9FE; color: #6D28D9; font-weight: 600; }
  .nav-btn svg { stroke: #6B7280; transition: stroke 0.15s; }
  .nav-btn:hover svg { stroke: #7C3AED; }
  .nav-btn.active svg { stroke: #6D28D9; }
  .nav-btn.active::before {
    content: ''; position: absolute; left: 0; top: 50%;
    transform: translateY(-50%); width: 3px; height: 20px;
    background: linear-gradient(180deg, #7C3AED, #A855F7); border-radius: 0 3px 3px 0;
    box-shadow: 0 0 8px rgba(124,58,237,0.3);
  }
  .nav-btn svg { flex-shrink: 0; }
  .nav-label { opacity: 0; transition: opacity 0.15s; }

  .sidebar-bottom {
    width: 100%; padding: 12px 10px;
    border-top: 1px solid var(--border);
    display: flex; flex-direction: column; gap: 2px;
  }

  /* ═══ MAIN ═══ */
  .main { margin-left: 72px; flex: 1; min-width: 0; position: relative; }
  .topbar {
    position: sticky; top: 0; z-index: 50;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 0 36px;
    display: flex; align-items: center; justify-content: space-between;
    height: 60px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
  }
  .topbar-left { display: flex; align-items: center; gap: 16px; min-width:0; }
  .topbar-title { font-family: var(--font-display); font-size: 20px; font-weight: 700; white-space:nowrap; }
  .topbar-right { display: flex; align-items: center; gap: 6px; }

  .content { padding: 28px 36px; }

  /* ═══ TOAST ═══ */
  .toast-container {
    position: fixed; bottom: 24px; right: 36px;
    z-index: 10000; display: flex; flex-direction: column; gap: 8px; align-items: flex-end;
    pointer-events: none;
  }
  .toast {
    padding: 14px 20px; border-radius: var(--radius-sm);
    background: var(--surface); color: var(--text);
    font-size: 13px; font-weight: 500;
    box-shadow: var(--shadow-md);
    display: flex; align-items: center; gap: 10px;
    animation: slideIn 0.3s ease;
    max-width: 360px;
    pointer-events: auto;
  }
  .toast.success { border-left: 3px solid #22c55e; }
  .toast.error { border-left: 3px solid #ef4444; }
  .toast.info { border-left: 3px solid #3b82f6; }

  /* ═══ GLOBAL SEARCH ═══ */
  .global-search { position:relative; }
  .global-search input {
    width:200px; padding:8px 14px 8px 36px; border-radius:20px; border:1.5px solid var(--border);
    font:13px var(--font-body); background:var(--bg); color:var(--text); outline:none; transition:all 0.2s;
  }
  .global-search input:focus { border-color:var(--accent); width:280px; background:var(--surface); box-shadow:var(--shadow-md); }
  .global-search svg { position:absolute; left:12px; top:50%; transform:translateY(-50%); color:var(--text3); pointer-events:none; }
  .search-results {
    position:absolute; top:100%; left:0; right:0; margin-top:6px; background:var(--surface);
    border:1px solid var(--border); border-radius:var(--radius); box-shadow:var(--shadow-lg);
    max-height:400px; overflow-y:auto; z-index:200; display:none;
  }
  .search-results.open { display:block; }
  .sr-item {
    padding:10px 14px; cursor:pointer; border-bottom:1px solid var(--border); transition:background 0.1s;
    display:flex; align-items:center; gap:10px;
  }
  .sr-item:hover { background:var(--bg); }
  .sr-item:last-child { border:none; }
  .sr-type { font-size:10px; font-weight:700; padding:2px 8px; border-radius:10px; text-transform:uppercase; letter-spacing:0.5px; }
  .sr-type.t-student { background:var(--blue-bg); color:var(--blue); }
  .sr-type.t-fee { background:var(--green-bg); color:var(--green); }
  .sr-type.t-inv { background:var(--yellow-bg); color:var(--yellow); }
  .sr-type.t-acad { background:var(--accent-light); color:var(--accent); }

  /* ═══ MOBILE SIDEBAR OVERLAY ═══ */
  .sidebar-overlay { position:fixed;inset:0;background:rgba(0,0,0,0);z-index:999;pointer-events:none;transition:background 0.25s ease,backdrop-filter 0.25s; }
  .sidebar-overlay.show { display:block; pointer-events:auto; }

  /* ═══ LOGIN GATE ═══ */
  .login-overlay {
    position:fixed;inset:0;background:var(--bg);z-index:9999;display:flex;align-items:center;justify-content:center;
  }
  .login-box {
    background:var(--surface);padding:40px;border-radius:16px;box-shadow:var(--shadow-lg);
    width:340px;max-width:90vw;text-align:center;
  }
  .login-box h1 { font-family:var(--font-display);font-size:28px;margin-bottom:4px; }
  .login-box input {
    width:100%;padding:14px;margin-top:16px;border-radius:var(--radius);border:1.5px solid var(--border);
    font-size:16px;text-align:center;letter-spacing:8px;font-family:var(--font-body);outline:none;
    background:var(--bg);color:var(--text);
  }
  .login-box input:focus { border-color:var(--accent); }
  .login-box button { width:100%;margin-top:14px;padding:14px;font-size:15px; }
  .login-error { color:var(--red);font-size:13px;margin-top:8px;min-height:20px; }

  /* ═══ MOBILE BOTTOM NAV ═══ */
  .bottom-nav { display:none;position:fixed;bottom:0;left:0;right:0;z-index:800;background:var(--surface);border-top:1px solid var(--border);padding:6px 0 env(safe-area-inset-bottom,6px);box-shadow:0 -4px 20px rgba(0,0,0,0.08); }
  .bottom-nav-inner { display:flex;justify-content:space-around;align-items:center; }
  .bnav-btn { display:flex;flex-direction:column;align-items:center;gap:1px;padding:8px 4px;border:none;background:none;color:var(--text3);font-size:9px;font-weight:600;cursor:pointer;font-family:var(--font-body);transition:0.15s;min-width:48px;position:relative; }
  .bnav-btn.active { color:var(--accent); }
  .bnav-btn.active::after { content:'';position:absolute;top:0;left:50%;transform:translateX(-50%);width:20px;height:2px;background:var(--accent);border-radius:2px; }
  .bnav-btn svg { width:22px;height:22px; }
  .bnav-btn:active { transform:scale(0.92); }

  /* ═══ FAB ═══ */
  .fab { display:none;position:fixed;bottom:72px;right:16px;z-index:799;width:52px;height:52px;border-radius:50%;background:linear-gradient(135deg,#1e56a0,#2d7dd2);color:#fff;border:none;box-shadow:0 4px 14px rgba(30,86,160,0.4);cursor:pointer;font-size:24px;transition:0.2s; }
  .fab:active { transform:scale(0.92); }
  .fab-menu { display:none;position:fixed;bottom:130px;right:16px;z-index:799;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-lg);padding:6px;min-width:160px; }
  .fab-menu.open { display:block; }
  .fab-item { display:flex;align-items:center;gap:8px;padding:10px 14px;border-radius:var(--radius-xs);cursor:pointer;font-size:13px;font-weight:500;border:none;background:none;width:100%;text-align:left;color:var(--text);font-family:var(--font-body); }
  .fab-item:hover { background:var(--bg); }

  /* ═══ MOBILE TOGGLE ═══ */
  .mobile-toggle { display: none; }

  /* ═══ DESKTOP OVERRIDES ═══ */
  @media (min-width:769px) { .m-card-list { display:none !important; } }
  @media (min-width:769px) { .bottom-nav { display:none !important; } }
  @media (min-width: 769px) { .bottom-nav { display: none !important; } .m-card-list { display: none !important; } .fab { display: none !important; } }