@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,700;1,400&family=Inter:wght@300;400;500;600&display=swap');

:root {
  --cream:       #faf7f2;
  --white:       #ffffff;
  --brown:       #3d2b1f;
  --brown-mid:   #6b4c38;
  --brown-light: #a67c5b;
  --amber:       #c8873a;
  --amber-light: #e8b87a;
  --amber-pale:  #fdf0e0;
  --green:       #2d6a45;
  --green-light: #e4f0e9;
  --red:         #b83232;
  --red-light:   #fdeaea;
  --text:        #1e140d;
  --text-mid:    #5a3e2e;
  --text-soft:   #9a7560;
  --border:      #e8ddd0;
  --shadow:      rgba(61,43,31,0.10);
  --radius:      14px;
  --radius-sm:   8px;
  --radius-lg:   20px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: 'Inter', sans-serif;
  background: var(--cream);
  color: var(--text);
  min-height: 100vh;
  display: flex; flex-direction: column;
  -webkit-font-smoothing: antialiased;
}
main { flex: 1; }

/* NAVBAR */
.navbar {
  background: var(--brown);
  padding: 0 36px;
  height: 60px;
  display: flex; align-items: center; justify-content: space-between;
  position: sticky; top: 0; z-index: 100;
}
.nav-logo {
  font-family: 'Playfair Display', serif;
  color: var(--amber-light); font-size: 20px;
  text-decoration: none; letter-spacing: 0.01em;
}
.nav-right { display: flex; align-items: center; gap: 14px; }
.nav-user {
  font-size: 14px; color: rgba(255,255,255,0.7);
  font-weight: 400;
}
.nav-btn {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  color: rgba(255,255,255,0.75);
  padding: 6px 14px; border-radius: 8px;
  cursor: pointer; font-size: 13px; font-family: 'Inter', sans-serif;
  transition: all 0.18s;
}
.nav-btn:hover { background: rgba(255,255,255,0.15); color: white; }

/* FOOTER */
footer {
  background: var(--brown);
  padding: 28px 36px;
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 14px; margin-top: auto;
}
.footer-left h4 { font-family: 'Playfair Display', serif; color: var(--amber-light); font-size: 17px; }
.footer-left p  { color: rgba(255,255,255,0.4); font-size: 12px; margin-top: 3px; }
.footer-right { display: flex; align-items: center; gap: 8px; }
.tech-pill {
  background: rgba(255,255,255,0.07); border: 1px solid rgba(255,255,255,0.12);
  border-radius: 20px; padding: 4px 10px;
  font-size: 12px; color: rgba(255,255,255,0.5);
}

/* FORMS */
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block; font-size: 11px; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--text-soft); margin-bottom: 7px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%; padding: 11px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm); font-size: 15px;
  font-family: 'Inter', sans-serif;
  color: var(--text); background: white;
  transition: border-color 0.18s, box-shadow 0.18s; outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--amber);
  box-shadow: 0 0 0 3px rgba(200,135,58,0.12);
}

/* BUTTONS */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 7px; padding: 11px 22px; border-radius: var(--radius-sm);
  font-family: 'Inter', sans-serif; font-size: 14px; font-weight: 600;
  cursor: pointer; transition: all 0.18s; border: none; text-decoration: none;
}
.btn-primary { background: var(--brown); color: var(--amber-light); }
.btn-primary:hover { background: var(--brown-mid); transform: translateY(-1px); }
.btn-primary:disabled { opacity: 0.45; cursor: not-allowed; transform: none; }
.btn-amber { background: var(--amber); color: white; }
.btn-amber:hover { background: var(--brown-mid); transform: translateY(-1px); }
.btn-ghost {
  background: transparent; border: 1.5px solid var(--border);
  color: var(--text-mid);
}
.btn-ghost:hover { border-color: var(--brown); color: var(--brown); }
.btn-danger { background: var(--red-light); border: 1.5px solid #f0bcbc; color: var(--red); }
.btn-danger:hover { background: #f9d0d0; }
.btn-full { width: 100%; }

/* CARDS */
.card {
  background: white; border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: 0 2px 16px var(--shadow);
}

/* BADGES */
.badge { padding: 4px 10px; border-radius: 20px; font-size: 12px; font-weight: 600; }
.badge-easy { background: var(--green-light); color: var(--green); }
.badge-mid  { background: #fff4e6; color: #b86a00; }
.badge-hard { background: var(--red-light); color: var(--red); }
.badge-time { background: var(--amber-pale); color: var(--brown-mid); }
.badge-pers { background: #e8f0ff; color: #2a50a0; }

/* OVERLAY */
.overlay {
  position: fixed; inset: 0; background: rgba(20,10,5,0.55);
  display: none; align-items: center; justify-content: center; z-index: 999;
  backdrop-filter: blur(2px);
}
.overlay.show { display: flex; }
.overlay-box {
  background: white; border-radius: var(--radius-lg);
  padding: 32px 44px; text-align: center;
  box-shadow: 0 20px 60px rgba(0,0,0,0.25);
}
.spinner {
  width: 44px; height: 44px; border: 3px solid var(--border);
  border-top-color: var(--amber); border-radius: 50%;
  animation: spin 0.75s linear infinite; margin: 0 auto 14px;
}
@keyframes spin { to { transform: rotate(360deg); } }
.overlay-box p { color: var(--text-mid); font-size: 15px; }

/* TOAST */
.toast {
  position: fixed; bottom: 28px; right: 28px;
  background: var(--brown); color: var(--amber-light);
  padding: 13px 20px; border-radius: var(--radius-sm);
  font-size: 14px; z-index: 2000;
  transform: translateY(80px); opacity: 0;
  transition: all 0.28s cubic-bezier(.34,1.56,.64,1);
  box-shadow: 0 8px 28px rgba(0,0,0,0.25);
  max-width: 320px;
}
.toast.show { transform: translateY(0); opacity: 1; }
.toast.err  { background: var(--red); color: white; }

/* BACK LINK */
.back-link {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--text-soft); font-size: 14px; text-decoration: none;
  transition: color 0.18s;
}
.back-link:hover { color: var(--brown); }

/* MODAL */
.modal-bg {
  position: fixed; inset: 0; background: rgba(0,0,0,0.45);
  display: none; align-items: center; justify-content: center;
  z-index: 600; backdrop-filter: blur(2px);
}
.modal-bg.open { display: flex; }
.modal {
  background: white; border-radius: var(--radius-lg);
  padding: 36px 32px; width: min(400px, 92vw);
  box-shadow: 0 20px 60px rgba(0,0,0,0.3); text-align: center;
}
.modal h3 { font-family: 'Playfair Display', serif; font-size: 22px; color: var(--brown); margin-bottom: 10px; }
.modal p  { color: var(--text-soft); font-size: 15px; margin-bottom: 26px; line-height: 1.55; }
.modal-btns { display: flex; gap: 10px; justify-content: center; }

@media (max-width: 680px) {
  .navbar { padding: 0 18px; }
  footer  { padding: 22px 18px; flex-direction: column; }
}