:root {
  --bg-color: #0b0d17;
  --panel-bg: rgba(20, 24, 38, 0.65);
  --glass-border: rgba(255, 255, 255, 0.08);
  --text-main: #f1f3f5;
  --text-muted: #adb5bd;
  --accent: #5e6ad2;
  --accent-glow: rgba(94, 106, 210, 0.5);
  --success: #2ecc71;
  --danger: #e74c3c;
  --font-main: 'Inter', sans-serif;
}

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

body {
  background-color: var(--bg-color);
  background-image: 
    radial-gradient(circle at 15% 50%, rgba(94, 106, 210, 0.15), transparent 25%),
    radial-gradient(circle at 85% 30%, rgba(46, 204, 113, 0.1), transparent 25%);
  color: var(--text-main);
  font-family: var(--font-main);
  overflow: hidden;
  height: 100vh;
}

.hidden { display: none !important; }

/* ── UTILS ── */
.glass {
  background: var(--panel-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}

/* ── LOGIN OVERLAY ── */
.overlay {
  position: fixed; inset: 0;
  display: flex; justify-content: center; align-items: center;
  z-index: 1000;
  background: rgba(11, 13, 23, 0.85);
  backdrop-filter: blur(5px);
  opacity: 0; pointer-events: none;
  transition: opacity 0.4s ease;
}
.overlay.active { opacity: 1; pointer-events: auto; }

.login-box {
  padding: 40px;
  border-radius: 16px;
  width: 400px;
  text-align: center;
  transform: translateY(20px);
  animation: floatUp 0.5s forwards ease-out;
}
@keyframes floatUp { to { transform: translateY(0); } }

.login-box h2 {
  font-weight: 800; letter-spacing: 2px;
  background: linear-gradient(90deg, #5e6ad2, #2ecc71);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 10px;
}
.login-box p { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 30px; }

.input-group { margin-bottom: 20px; text-align: left; }
.input-group label { display: block; font-size: 0.85rem; color: var(--text-muted); margin-bottom: 8px; text-transform: uppercase; letter-spacing: 1px; }
.input-group input {
  width: 100%; padding: 12px 16px;
  background: rgba(0,0,0,0.5);
  border: 1px solid var(--glass-border);
  border-radius: 8px; color: #fff; font-size: 1rem;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.input-group input:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 10px var(--accent-glow);
}

.btn-glow {
  width: 100%; padding: 14px;
  background: var(--accent);
  color: white; border: none; border-radius: 8px;
  font-weight: 700; font-size: 1rem; letter-spacing: 1px;
  cursor: pointer; transition: all 0.3s;
  box-shadow: 0 4px 15px var(--accent-glow);
}
.btn-glow:hover { transform: translateY(-2px); box-shadow: 0 6px 20px var(--accent-glow); background: #6b77e8; }
.btn-glow.success { background: var(--success); box-shadow: 0 4px 15px rgba(46, 204, 113, 0.4); }
.btn-glow.success:hover { background: #34d878; box-shadow: 0 6px 20px rgba(46, 204, 113, 0.6); }

.error-msg { color: var(--danger) !important; margin-top: 15px !important; font-weight: 600; min-height: 20px; }

/* ── DASHBOARD LAYOUT ── */
.dashboard { display: flex; height: 100vh; }

.sidebar {
  width: 250px;
  display: flex; flex-direction: column;
  border-right: 1px solid var(--glass-border);
}

.brand { padding: 30px 20px; text-align: center; border-bottom: 1px solid var(--glass-border); }
.brand h1 { font-size: 1.8rem; font-weight: 800; letter-spacing: 1px; }
.brand h1 span { color: var(--accent); }
.brand p { font-size: 0.8rem; color: var(--success); margin-top: 5px; }

.sidebar nav { flex: 1; padding: 20px 10px; display: flex; flex-direction: column; gap: 10px; }
.nav-btn {
  background: transparent; border: none; color: var(--text-muted);
  text-align: left; padding: 12px 20px; font-size: 1rem; font-weight: 600;
  border-radius: 8px; cursor: pointer; transition: all 0.3s;
}
.nav-btn:hover { background: rgba(255,255,255,0.05); color: #fff; }
.nav-btn.active { background: var(--accent); color: #fff; box-shadow: 0 4px 15px var(--accent-glow); }

.logout-box { padding: 20px; border-top: 1px solid var(--glass-border); }
.btn-danger { width: 100%; padding: 10px; border-radius: 8px; background: transparent; border: 1px solid var(--danger); color: var(--danger); cursor: pointer; font-weight: 600; transition: 0.3s; }
.btn-danger:hover { background: var(--danger); color: #fff; box-shadow: 0 4px 15px rgba(231, 76, 60, 0.4); }

/* MAIN CONTENT */
.main-content {
  flex: 1; padding: 40px; overflow-y: auto; position: relative;
}

.tab-header { display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--glass-border); padding-bottom: 20px; margin-bottom: 30px; }
.tab-header h2 { font-size: 2rem; font-weight: 700; }
.tab-header p { color: var(--text-muted); margin-top: 5px; }

.search-bar input {
  padding: 10px 20px; width: 300px;
  background: var(--panel-bg); border: 1px solid var(--glass-border);
  border-radius: 20px; color: #fff; font-size: 1rem;
}
.search-bar input:focus { outline: none; border-color: var(--accent); }

/* GRID ITEMS */
.inventory-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; }
.item-card {
  padding: 20px; border-radius: 12px;
  display: flex; flex-direction: column; gap: 15px;
  transition: transform 0.2s, background 0.3s;
}
.item-card:hover { transform: translateY(-3px); background: rgba(20, 24, 38, 0.8); }

.item-name { font-size: 1.2rem; font-weight: 700; color: #fff; word-break: break-word; line-height: 1.2; }
.item-qty { font-size: 2rem; font-weight: 800; color: var(--accent); margin-top: 5px;}
.empty-qty { color: var(--text-muted); }

.item-actions { display: flex; gap: 8px; }
.act-btn {
  flex: 1; padding: 8px; background: rgba(255,255,255,0.05);
  border: 1px solid var(--glass-border); border-radius: 6px;
  color: #fff; font-weight: 600; cursor: pointer; transition: 0.2s;
}
.act-btn:hover { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.3); }
.act-btn.plus { color: var(--success); }
.act-btn.minus { color: var(--text-muted); }

/* CRAFTING */
.crafting-layout { display: flex; gap: 30px; height: calc(100vh - 200px); }
.blueprint-list {
  flex: 1; border-radius: 12px; overflow-y: auto; padding: 20px;
  display: flex; flex-direction: column; gap: 10px;
}
.bp-item {
  padding: 15px; background: rgba(255,255,255,0.03); border: 1px solid var(--glass-border);
  border-radius: 8px; cursor: pointer; transition: 0.2s; font-weight: 600;
  display: flex; justify-content: space-between;
}
.bp-item:hover { background: rgba(255,255,255,0.08); }
.bp-item.active { background: var(--accent); border-color: var(--accent); box-shadow: 0 4px 15px var(--accent-glow); }

.crafting-calculator {
  flex: 2; border-radius: 12px; padding: 30px; display: flex; flex-direction: column;
}
.crafting-calculator h3 { font-size: 1.5rem; margin-bottom: 20px; border-bottom: 1px solid var(--glass-border); padding-bottom: 10px; }

.ingredients-list { flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 12px; margin-bottom: 20px; }
.ingredient-row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 15px; background: rgba(0,0,0,0.3); border-radius: 8px; border: 1px solid var(--glass-border);
}
.ing-info { display: flex; flex-direction: column; }
.ing-name { font-weight: 700; color: #fff; }
.ing-qty { color: var(--text-muted); font-size: 0.9rem; margin-top: 5px; }

.ing-link select {
  padding: 8px 12px; background: #000; border: 1px solid var(--glass-border);
  color: #fff; border-radius: 6px; outline: none; max-width: 200px;
}
.ing-link select:focus { border-color: var(--accent); }

.status-badge {
  padding: 4px 8px; border-radius: 4px; font-size: 0.8rem; font-weight: 700;
}
.status-badge.ok { background: rgba(46, 204, 113, 0.2); color: var(--success); }
.status-badge.fail { background: rgba(231, 76, 60, 0.2); color: var(--danger); }

.calc-box {
  padding: 20px; background: rgba(0,0,0,0.4); border-radius: 12px; border: 1px solid var(--glass-border);
  display: flex; align-items: center; gap: 20px;
}
.calc-box input {
  padding: 10px; width: 100px; border-radius: 6px; border: 1px solid var(--accent);
  background: #000; color: #fff; font-weight: bold; font-size: 1.2rem; text-align: center;
}

/* LOGS */
.logs-container { padding: 20px; border-radius: 12px; max-height: calc(100vh - 200px); overflow-y: auto; }
#logs-list { list-style: none; display: flex; flex-direction: column; gap: 10px; }
#logs-list li {
  padding: 12px 15px; background: rgba(255,255,255,0.02);
  border-left: 4px solid var(--text-muted); border-radius: 4px;
  font-size: 0.95rem; display: flex; justify-content: space-between;
}
#logs-list li.add { border-left-color: var(--success); }
#logs-list li.remove { border-left-color: var(--danger); }
#logs-list li.set { border-left-color: var(--accent); }
.log-user { font-weight: bold; color: #fff; }
.log-time { color: var(--text-muted); font-size: 0.85rem; }

/* SCROLLBAR */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.2); }

/* TOAST notifications */
.toast {
  position: fixed;
  bottom: -50px;
  right: 20px;
  padding: 12px 24px;
  background: var(--accent);
  color: #fff;
  border-radius: 8px;
  font-weight: 700;
  box-shadow: 0 4px 15px rgba(0,0,0,0.5);
  z-index: 2000;
  transition: bottom 0.4s cubic-bezier(0.18, 0.89, 0.32, 1.28), opacity 0.3s;
  opacity: 0;
}
.toast.visible {
  bottom: 20px;
  opacity: 1;
}
.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }
.toast.info { background: var(--accent); }