/* css/base.css */
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&family=DM+Serif+Display&display=swap');

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

:root {
  --brand-50:  #eef4fb;
  --brand-100: #d5e5f5;
  --brand-300: #7aaedd;
  --brand-500: #2d72b8;
  --brand-700: #174678;
  --brand-900: #0a1c31;
  --brand-950: #060f1a;

  --slate-50:  #f8fafc;
  --slate-100: #f1f5f9;
  --slate-200: #e2e8f0;
  --slate-300: #cbd5e1;
  --slate-400: #94a3b8;
  --slate-500: #64748b;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-800: #1e293b;
  --slate-900: #0f172a;

  --success: #10b981;
  --warning: #f59e0b;
  --danger:  #ef4444;

  --font-body:    'DM Sans', system-ui, sans-serif;
  --font-display: 'DM Serif Display', serif;
  --radius:       8px;
  --radius-lg:    14px;
  --radius-xl:    18px;
  --shadow-card:  0 1px 3px rgba(0,0,0,.06), 0 1px 2px -1px rgba(0,0,0,.06);
  --shadow-md:    0 4px 12px rgba(0,0,0,.08);
  --shadow-lg:    0 8px 30px rgba(0,0,0,.10);
}

html { font-size: 16px; }
body { font-family: var(--font-body); background: var(--slate-50); color: var(--slate-900); -webkit-font-smoothing: antialiased; }

h1,h2,h3 { font-family: var(--font-display); font-weight: 400; }

a { color: inherit; text-decoration: none; }

/* Layout */
.app-shell { display: flex; min-height: 100vh; }
.main-content { flex: 1; overflow-y: auto; }
.page { padding: 2rem 2.5rem; max-width: 1100px; margin: 0 auto; }
.page-header { margin-bottom: 2rem; }
.page-header h1 { font-size: 1.6rem; color: var(--slate-900); }
.page-header p { color: var(--slate-500); font-size: 0.875rem; margin-top: 0.25rem; }

/* Cards */
.card { background: white; border-radius: var(--radius-lg); border: 1px solid var(--slate-200); box-shadow: var(--shadow-card); }
.card-header { padding: 1rem 1.5rem; border-bottom: 1px solid var(--slate-100); display: flex; align-items: center; justify-content: space-between; }
.card-header h2 { font-family: var(--font-body); font-size: 0.875rem; font-weight: 600; color: var(--slate-800); }
.card-body { padding: 1.25rem 1.5rem; }

/* Stat cards */
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin-bottom: 1.5rem; }
.stat-card { background: white; border-radius: var(--radius-lg); border: 1px solid var(--slate-200); box-shadow: var(--shadow-card); padding: 1.25rem; }
.stat-card .label { font-size: 0.75rem; font-weight: 500; color: var(--slate-500); margin-bottom: 0.5rem; }
.stat-card .value { font-size: 1.75rem; font-weight: 700; color: var(--slate-900); }
.stat-card .sub   { font-size: 0.75rem; color: var(--slate-400); margin-top: 0.2rem; }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 0.4rem; padding: 0.5rem 1rem; border-radius: var(--radius); font-size: 0.875rem; font-weight: 500; font-family: var(--font-body); cursor: pointer; border: none; transition: all 0.15s; }
.btn:active { transform: scale(0.98); }
.btn-primary   { background: var(--brand-700); color: white; box-shadow: 0 1px 2px rgba(0,0,0,.1); }
.btn-primary:hover { background: var(--brand-900); }
.btn-secondary { background: white; color: var(--slate-700); border: 1px solid var(--slate-200); }
.btn-secondary:hover { background: var(--slate-50); }
.btn-ghost  { background: transparent; color: var(--slate-600); }
.btn-ghost:hover { background: var(--slate-100); }
.btn-sm { padding: 0.35rem 0.75rem; font-size: 0.8rem; }
.btn-danger { background: var(--danger); color: white; }

/* Form elements */
.form-group { margin-bottom: 1rem; }
.form-label { display: block; font-size: 0.875rem; font-weight: 500; color: var(--slate-700); margin-bottom: 0.4rem; }
.form-label span { font-weight: 400; color: var(--slate-400); }
.form-input, .form-select, .form-textarea {
  width: 100%; padding: 0.625rem 0.875rem; border-radius: var(--radius);
  border: 1px solid var(--slate-200); background: white;
  font-size: 0.875rem; font-family: var(--font-body); color: var(--slate-900);
  transition: border-color 0.15s, box-shadow 0.15s;
}
.form-input::placeholder, .form-textarea::placeholder { color: var(--slate-400); }
.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none; border-color: var(--brand-500);
  box-shadow: 0 0 0 3px rgba(45,114,184,.15);
}
.form-textarea { resize: vertical; min-height: 80px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

/* Badges */
.badge { display: inline-flex; align-items: center; gap: 0.2rem; padding: 0.2rem 0.6rem; border-radius: 999px; font-size: 0.75rem; font-weight: 500; }
.badge-success { color: var(--success); background: #ecfdf5; }
.badge-warning { color: var(--warning); background: #fffbeb; }
.badge-danger  { color: var(--danger);  background: #fef2f2; }
.badge-slate   { color: var(--slate-500); background: var(--slate-100); }

/* Tables */
.data-table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
.data-table th { padding: 0.75rem 1.25rem; text-align: left; font-size: 0.7rem; font-weight: 600; color: var(--slate-500); text-transform: uppercase; letter-spacing: 0.04em; background: var(--slate-50); border-bottom: 1px solid var(--slate-100); }
.data-table td { padding: 0.875rem 1.25rem; border-bottom: 1px solid var(--slate-50); vertical-align: middle; }
.data-table tr:hover td { background: rgba(248,250,252,.6); }
.data-table tr:last-child td { border-bottom: none; }

/* Modal */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,.4); backdrop-filter: blur(4px); display: flex; align-items: center; justify-content: center; z-index: 50; padding: 1rem; opacity: 0; pointer-events: none; transition: opacity 0.2s; }
.modal-overlay.open { opacity: 1; pointer-events: all; }
.modal { background: white; border-radius: var(--radius-xl); box-shadow: var(--shadow-lg); width: 100%; max-width: 520px; max-height: 90vh; display: flex; flex-direction: column; transform: translateY(10px); transition: transform 0.25s cubic-bezier(0.16,1,0.3,1); }
.modal-overlay.open .modal { transform: translateY(0); }
.modal-header { padding: 1.25rem 1.5rem; border-bottom: 1px solid var(--slate-100); display: flex; align-items: center; justify-content: space-between; flex-shrink: 0; }
.modal-header h2 { font-family: var(--font-body); font-size: 1rem; font-weight: 600; color: var(--slate-800); }
.modal-body { padding: 1.5rem; overflow-y: auto; flex: 1; }
.modal-footer { padding: 1rem 1.5rem; border-top: 1px solid var(--slate-100); display: flex; gap: 0.75rem; justify-content: flex-end; flex-shrink: 0; }
.modal-close { background: none; border: none; cursor: pointer; color: var(--slate-400); padding: 0.25rem; border-radius: var(--radius); }
.modal-close:hover { background: var(--slate-100); color: var(--slate-600); }

/* Progress bar */
.progress-bar { height: 6px; background: var(--slate-100); border-radius: 999px; overflow: hidden; }
.progress-fill { height: 100%; border-radius: 999px; background: var(--brand-500); transition: width 0.4s ease; }

/* Callout */
.callout { padding: 0.875rem 1rem; border-radius: var(--radius); display: flex; gap: 0.75rem; font-size: 0.875rem; }
.callout-info    { background: var(--brand-50); border-left: 3px solid var(--brand-500); color: var(--brand-900); }
.callout-warning { background: #fffbeb; border-left: 3px solid var(--warning); color: #78350f; }

/* Area dot */
.area-dot { width: 28px; height: 28px; border-radius: 7px; display: flex; align-items: center; justify-content: center; color: white; font-size: 0.75rem; font-weight: 700; flex-shrink: 0; }

/* Spinner */
.spinner { width: 20px; height: 20px; border: 2px solid var(--slate-200); border-top-color: var(--brand-500); border-radius: 50%; animation: spin 0.7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Loading state */
.loading-screen { display: flex; align-items: center; justify-content: center; min-height: 60vh; }

/* Animations */
.animate-in { animation: slideUp 0.3s cubic-bezier(0.16,1,0.3,1) both; }
@keyframes slideUp { from { opacity:0; transform:translateY(8px); } to { opacity:1; transform:translateY(0); } }

/* Scrollbar */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: var(--slate-100); }
::-webkit-scrollbar-thumb { background: var(--slate-300); border-radius: 999px; }

/* Toast */
.toast-container { position: fixed; bottom: 1.5rem; right: 1.5rem; z-index: 100; display: flex; flex-direction: column; gap: 0.5rem; }
.toast { background: var(--slate-900); color: white; padding: 0.75rem 1rem; border-radius: var(--radius); font-size: 0.875rem; box-shadow: var(--shadow-lg); animation: slideUp 0.25s ease both; min-width: 200px; }
.toast.success { background: var(--success); }
.toast.error   { background: var(--danger); }