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

:root {
  --bg: #f1f5f9;
  --surface: #ffffff;
  --border: #e2e8f0;
  --text: #0f172a;
  --text-muted: #64748b;
  --blue: #3b82f6;
  --blue-dark: #2563eb;
  --blue-light: #eff6ff;
  --green: #22c55e;
  --green-light: #f0fdf4;
  --purple: #8b5cf6;
  --purple-light: #f5f3ff;
  --orange: #f97316;
  --red: #ef4444;
  --red-light: #fef2f2;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow-lg: 0 10px 25px rgba(0,0,0,.12);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  color: var(--text);
  font-size: 15px;
  line-height: 1.6;
}

.hidden { display: none !important; }

/* ── BUTTONS ── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all .15s;
  text-decoration: none;
}

.btn-primary {
  background: var(--blue);
  color: #fff;
}
.btn-primary:hover { background: var(--blue-dark); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(59,130,246,.4); }

.btn-outline {
  background: transparent;
  color: var(--blue);
  border: 2px solid var(--blue);
}
.btn-outline:hover { background: var(--blue); color: #fff; }

.btn-white {
  background: #fff;
  color: var(--blue-dark);
}
.btn-white:hover { background: #f0f9ff; }

.btn-lg { padding: 16px 36px; font-size: 16px; border-radius: 10px; }

.btn-full { width: 100%; }

.btn:disabled { opacity: .6; cursor: not-allowed; transform: none !important; }

/* ── FORMS ── */

.form-group { margin-bottom: 18px; }

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 11px 14px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  outline: none;
  transition: border-color .15s;
  background: #fff;
  color: var(--text);
  appearance: none;
}

.form-group input:focus,
.form-group select:focus { border-color: var(--blue); }

.form-hint {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

.error-msg {
  background: var(--red-light);
  color: var(--red);
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 13px;
  margin-bottom: 16px;
}

.success-msg {
  background: var(--green-light);
  color: #15803d;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 13px;
  margin-bottom: 16px;
}

/* ── CARDS ── */

.card {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 32px;
}