:root {
  --dark-teal: #2b6777;
  --light-gray-blue: #c8d8e4;
  --white: #ffffff;
  --off-white: #f2f2f2;
  --aquamarine: #52ab98;
  --danger: #d9534f;
  --text-dark: #1c3b44;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--off-white);
  color: var(--text-dark);
  min-height: 100vh;
}

/* Navbar */
.navbar {
  background: var(--white);
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
  position: sticky;
  top: 0;
  z-index: 100;
}
.navbar .logo a { font-weight: 800; font-size: 1.25rem; color: var(--dark-teal); text-decoration: none; }
.navbar .nav-links { display: flex; gap: 1rem; align-items: center; }
.navbar a { color: var(--dark-teal); text-decoration: none; font-weight: 600; }
.navbar a.btn { background: var(--aquamarine); color: white; padding: 0.5rem 1rem; border-radius: 6px; }

/* Banner / Hero */
.hero {
  background: linear-gradient(135deg, var(--dark-teal), var(--aquamarine));
  color: white;
  padding: 3.5rem 2rem;
  text-align: center;
}
.hero h1 { margin: 0 0 0.5rem; font-size: 2.2rem; }
.hero p { margin: 0; opacity: 0.95; font-size: 1.1rem; }

/* Redirect Notice */
.auth-notice {
  background: #e6f4f1;
  border: 1px solid var(--aquamarine);
  color: var(--dark-teal);
  padding: 0.75rem 1rem;
  border-radius: 6px;
  margin-bottom: 1rem;
  font-weight: 600;
  text-align: center;
}

/* Grid Layout */
.bot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
  padding: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.bot-card {
  background: var(--white);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  display: flex;
  flex-direction: column;
  transition: transform 0.2s, box-shadow 0.2s;
  border: 1px solid var(--light-gray-blue);
}
.bot-card:hover { transform: translateY(-4px); box-shadow: 0 8px 20px rgba(0,0,0,0.1); }
.bot-card h3 { margin: 0 0 0.5rem; color: var(--dark-teal); }
.bot-card p { color: #555; flex-grow: 1; margin: 0 0 1rem; line-height: 1.4; }
.bot-price { font-size: 1.3rem; font-weight: 700; color: var(--aquamarine); margin-bottom: 1rem; }
.bot-price.free { color: var(--dark-teal); }

/* Buttons */
.btn {
  background: var(--aquamarine); color: white; border: none;
  padding: 0.75rem 1.25rem; border-radius: 6px;
  font-weight: 600; cursor: pointer; transition: background 0.2s;
  font-size: 0.95rem; text-align: center; text-decoration: none;
}
.btn:hover { background: #429a87; }
.btn:disabled { background: #aaa; cursor: not-allowed; }
.btn-outline { background: transparent; border: 2px solid var(--dark-teal); color: var(--dark-teal); }
.btn-danger { background: var(--danger); color: white; }

/* Forms / Auth pages */
.auth-box {
  max-width: 400px; margin: 3rem auto; padding: 2rem;
  background: var(--white); border-radius: 12px; box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  border: 1px solid var(--light-gray-blue);
}
.auth-box h2 { margin-top: 0; color: var(--dark-teal); }
.auth-box input, .auth-box select {
  width: 100%; padding: 0.75rem; margin: 0.5rem 0 1rem;
  border: 1px solid var(--light-gray-blue); border-radius: 6px;
  font-size: 1rem; box-sizing: border-box;
}
.auth-box input:focus { outline: 2px solid var(--aquamarine); }
.auth-box .btn { width: 100%; }
.auth-box .link { text-align: center; margin-top: 1rem; font-size: 0.9rem; }
.auth-box .link a { color: var(--aquamarine); text-decoration: none; font-weight: 600; }
.error-msg { color: var(--danger); font-size: 0.9rem; margin: 0.5rem 0; min-height: 1.2em; }

/* Modals */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.5);
  display: none; justify-content: center; align-items: center;
  z-index: 200;
}
.modal-overlay.active { display: flex; }
.modal-content {
  background: var(--white); padding: 2rem; border-radius: 12px;
  width: 90%; max-width: 400px; text-align: center;
  border: 1px solid var(--light-gray-blue);
}
.modal-content h3 { margin-top: 0; color: var(--dark-teal); }
.modal-content input {
  width: 100%; padding: 0.75rem; margin: 1rem 0;
  border: 1px solid var(--light-gray-blue); border-radius: 6px; box-sizing: border-box;
}

/* Toast */
.toast {
  position: fixed; top: 20px; right: 20px;
  background: var(--dark-teal); color: white;
  padding: 1rem 1.5rem; border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
  display: none; z-index: 300; max-width: 320px;
}
.toast.show { display: block; animation: slideIn 0.3s; }
.toast.error { background: var(--danger); }
@keyframes slideIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* Admin */
.admin-section { max-width: 1000px; margin: 2rem auto; padding: 2rem; background: white; border-radius: 12px; border: 1px solid var(--light-gray-blue); }
.admin-section table { width: 100%; border-collapse: collapse; margin-top: 1rem; }
.admin-section th, .admin-section td { padding: 0.75rem; text-align: left; border-bottom: 1px solid var(--light-gray-blue); }
.admin-section th { background: var(--off-white); color: var(--dark-teal); }
.admin-form { display: grid; gap: 1rem; margin-bottom: 2rem; }
.admin-form input, .admin-form textarea, .admin-form select {
  padding: 0.75rem; border: 1px solid var(--light-gray-blue); border-radius: 6px; font-size: 1rem;
}