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

body {
  font-family: 'Segoe UI', Arial, sans-serif;
  background: #0f1420;
  color: #e6e9f0;
  min-height: 100vh;
}

/* ---------- Login ---------- */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-card {
  background: #171e2e;
  padding: 40px;
  border-radius: 12px;
  width: 100%;
  max-width: 380px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

.login-card h1 { font-size: 1.5rem; margin-bottom: 6px; }
.login-card .subtitle { color: #8b94a7; margin-bottom: 24px; font-size: 0.95rem; }

.login-card label { display: block; margin-bottom: 6px; font-size: 0.9rem; color: #aab2c5; }
.login-card input {
  width: 100%;
  padding: 10px 12px;
  margin-bottom: 16px;
  border: 1px solid #2a3350;
  border-radius: 8px;
  background: #0f1420;
  color: #e6e9f0;
  font-size: 1rem;
}
.login-card input:focus { outline: none; border-color: #4f7cff; }

button {
  padding: 10px 18px;
  border: none;
  border-radius: 8px;
  background: #4f7cff;
  color: #fff;
  font-size: 1rem;
  cursor: pointer;
}
button:hover { background: #3d68e0; }
.login-card button { width: 100%; }

.error { color: #ff6b6b; font-size: 0.9rem; margin-bottom: 12px; min-height: 1.2em; }
.success { color: #51cf66; font-size: 0.9rem; margin-top: 10px; }

/* ---------- Layout ---------- */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 32px;
  background: #171e2e;
  border-bottom: 1px solid #2a3350;
}
.topbar h1 { font-size: 1.3rem; }
.user-box { display: flex; align-items: center; gap: 16px; }
.user-box span { color: #aab2c5; }

.btn-secondary { background: #2a3350; }
.btn-secondary:hover { background: #35406360; background: #354063; }
.btn-link { color: #4f7cff; text-decoration: none; font-size: 0.95rem; }
.btn-link:hover { text-decoration: underline; }
.btn-danger { background: #c92a2a; padding: 6px 12px; font-size: 0.85rem; }
.btn-danger:hover { background: #a61e1e; }

.hidden { display: none !important; }

.container { max-width: 960px; margin: 0 auto; padding: 32px 20px; }

/* ---------- Corso ---------- */
.video-list { display: flex; flex-direction: column; gap: 28px; }

.video-card {
  background: #171e2e;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid #232b40;
}

.video-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 24px;
  border-bottom: 1px solid #232b40;
}
.video-head h2 { font-size: 1.1rem; letter-spacing: 0.5px; }

.badge { font-size: 0.8rem; padding: 4px 12px; border-radius: 20px; }
.badge-ok { background: #1b3a2a; color: #51cf66; }
.badge-soon { background: #3a2f1b; color: #ffd43b; }

.video-body { padding: 24px; }
.video-body video {
  width: 100%;
  border-radius: 8px;
  background: #000;
}
.placeholder { color: #8b94a7; text-align: center; padding: 40px 0; }

/* ---------- Admin ---------- */
.panel {
  background: #171e2e;
  border-radius: 12px;
  border: 1px solid #232b40;
  padding: 24px;
  margin-bottom: 28px;
}
.panel h2 { font-size: 1.1rem; margin-bottom: 18px; }

.inline-form { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.inline-form input[type="text"], .inline-form input[type="password"] {
  padding: 10px 12px;
  border: 1px solid #2a3350;
  border-radius: 8px;
  background: #0f1420;
  color: #e6e9f0;
  font-size: 0.95rem;
  min-width: 200px;
}
.checkbox-label { display: flex; align-items: center; gap: 6px; color: #aab2c5; font-size: 0.95rem; }

.users-table { width: 100%; border-collapse: collapse; }
.users-table th, .users-table td {
  text-align: left;
  padding: 12px 10px;
  border-bottom: 1px solid #232b40;
}
.users-table th { color: #8b94a7; font-weight: 600; font-size: 0.85rem; text-transform: uppercase; }