/* ─── CertForge Shared Styles ─────────────────────────────────────────────── */

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

:root {
  --bg: #f9f7f4;
  --surface: #ffffff;
  --surface-2: #f4f1ed;
  --border: #e8e4de;
  --text: #1a1814;
  --muted: #7a7570;
  --accent: #2563eb;
  --accent-light: #eff6ff;
  --accent-dark: #1d4ed8;
  --success: #16a34a;
  --success-light: #f0fdf4;
  --danger: #dc2626;
  --danger-light: #fef2f2;
  --warning: #d97706;
  --warning-light: #fffbeb;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08), 0 2px 4px rgba(0,0,0,0.04);
}

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* ─── Typography ─────────────────────────────────────────────────────────── */

h1, h2, h3 { letter-spacing: -0.02em; }

.serif { font-family: 'DM Serif Display', serif; }

/* ─── Buttons ────────────────────────────────────────────────────────────── */

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.4rem;
  padding: 0.6rem 1.4rem;
  border-radius: var(--radius-sm);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
  border: none;
  white-space: nowrap;
}

.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none !important; }

.btn-primary { background: var(--text); color: white; }
.btn-primary:hover:not(:disabled) { background: #2a2520; transform: translateY(-1px); }

.btn-accent { background: var(--accent); color: white; }
.btn-accent:hover:not(:disabled) { background: var(--accent-dark); transform: translateY(-1px); }

.btn-outline { background: transparent; color: var(--text); border: 1.5px solid var(--border); }
.btn-outline:hover:not(:disabled) { border-color: #b0a89e; background: var(--surface-2); }

.btn-ghost { background: transparent; color: var(--muted); }
.btn-ghost:hover:not(:disabled) { color: var(--text); background: var(--surface-2); }

.btn-danger { background: var(--danger); color: white; }
.btn-danger:hover:not(:disabled) { background: #b91c1c; }

.btn-lg { padding: 0.85rem 2rem; font-size: 1rem; border-radius: 10px; }
.btn-sm { padding: 0.4rem 0.9rem; font-size: 0.82rem; }
.btn-full { width: 100%; }

/* ─── Form Elements ──────────────────────────────────────────────────────── */

.form-group { margin-bottom: 1.25rem; }

label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 0.4rem;
}

input[type="text"],
input[type="email"],
input[type="password"] {
  width: 100%;
  padding: 0.7rem 1rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.95rem;
  background: var(--surface);
  color: var(--text);
  transition: border-color 0.15s;
  outline: none;
}

input:focus { border-color: var(--accent); }
input.error { border-color: var(--danger); }

.field-error {
  font-size: 0.8rem;
  color: var(--danger);
  margin-top: 0.3rem;
}

/* ─── Card ───────────────────────────────────────────────────────────────── */

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

/* ─── Badge ──────────────────────────────────────────────────────────────── */

.badge {
  display: inline-flex; align-items: center;
  padding: 0.2rem 0.6rem;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-blue { background: var(--accent-light); color: var(--accent); }
.badge-green { background: var(--success-light); color: var(--success); }
.badge-red { background: var(--danger-light); color: var(--danger); }
.badge-yellow { background: var(--warning-light); color: var(--warning); }
.badge-gray { background: var(--surface-2); color: var(--muted); }

/* ─── Alert ──────────────────────────────────────────────────────────────── */

.alert {
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.alert-error { background: var(--danger-light); color: var(--danger); border: 1px solid #fecaca; }
.alert-success { background: var(--success-light); color: var(--success); border: 1px solid #bbf7d0; }

/* ─── Progress Bar ───────────────────────────────────────────────────────── */

.progress-bar {
  height: 6px;
  background: var(--border);
  border-radius: 100px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 100px;
  transition: width 0.3s ease;
}

.progress-fill.green { background: var(--success); }
.progress-fill.red { background: var(--danger); }

/* ─── Nav ────────────────────────────────────────────────────────────────── */

.app-nav {
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1rem 2rem;
  background: rgba(249,247,244,0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-family: 'DM Serif Display', serif;
  font-size: 1.3rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.02em;
}
.nav-logo span { color: var(--accent); }

/* ─── Spinner ────────────────────────────────────────────────────────────── */

.spinner {
  width: 20px; height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  display: inline-block;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ─── Animations ─────────────────────────────────────────────────────────── */

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.fade-up { animation: fadeUp 0.4s ease both; }
.fade-in { animation: fadeIn 0.3s ease both; }

/* ─── Utility ────────────────────────────────────────────────────────────── */

.text-muted { color: var(--muted); }
.text-sm { font-size: 0.85rem; }
.text-center { text-align: center; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }