:root {
  --bg1: linear-gradient(135deg, #0a1118, #1b2a35);
  --accent: #0ea5a0;
  --text: #e6eef6;
  --panel: rgba(30, 40, 50, 0.85);
  --card: rgba(255, 255, 255, 0.05);
  --border: rgba(255,255,255,0.1);
  --hover: rgba(14,165,160,0.15);
}

* { box-sizing: border-box; font-family: 'Inter', system-ui, sans-serif; }
body, html { margin: 0; height: 100%; color: var(--text); background: var(--bg1); }

/* LOGIN */
.login-container {
  position: fixed; inset: 0; display: flex; justify-content: center; align-items: center;
  background: var(--bg1);
  background-size: cover;
  backdrop-filter: blur(6px);
}
.login-card {
  background: var(--panel);
  border: 1px solid var(--border);
  padding: 32px 28px;
  border-radius: 16px;
  box-shadow: 0 0 24px rgba(0,0,0,0.4);
  text-align: center;
  max-width: 380px; width: 90%;
}
.logo { height: 70px; margin-bottom: 12px; }
h1 { margin: 8px 0; }
.subtitle { color: #aab6c1; margin-bottom: 18px; }
input {
  width: 100%; padding: 10px 12px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--card); color: var(--text);
  margin-bottom: 12px;
}
input:focus { outline: none; border-color: var(--accent); }
.btn {
  width: 100%; padding: 10px; border: none; border-radius: 8px;
  background: var(--accent); color: #fff; font-weight: 600; cursor: pointer;
}
.btn:hover { background: #13c7bf; }
.hint, .footer { font-size: 12px; color: #8b9aa3; margin-top: 10px; }

/* DASHBOARD */
.main { display: flex; height: 100vh; }
.sidebar {
  width: 240px; background: rgba(12,20,27,0.8);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column; padding: 16px;
}
.brand { display: flex; align-items: center; gap: 10px; margin-bottom: 24px; }
.brand img { height: 42px; border-radius: 6px; }
.brand h2 { font-size: 18px; margin: 0; color: var(--accent); }
nav { flex: 1; display: flex; flex-direction: column; gap: 10px; }
.nav-btn {
  background: transparent; border: 1px solid var(--border); color: var(--text);
  padding: 10px 12px; border-radius: 8px; cursor: pointer; text-align: left;
  font-size: 15px; transition: all 0.2s ease;
}
.nav-btn:hover { background: var(--hover); border-color: var(--accent); color: var(--accent); }
.logout {
  background: transparent; border: none; color: #ff6b6b; margin-top: auto; cursor: pointer;
  font-weight: bold; padding: 10px 0;
}
.content { flex: 1; padding: 40px; }
.content h1 { font-size: 28px; margin-bottom: 10px; color: var(--accent); }

@media (max-width: 800px) {
  .main { flex-direction: column; }
  .sidebar { flex-direction: row; overflow-x: auto; width: 100%; border-right: none; border-bottom: 1px solid var(--border); }
  nav { flex-direction: row; }
  .nav-btn { flex: 1; text-align: center; font-size: 14px; }
}