/* ============================================================
   PharmaDose — Shared Design System (style.css)
   ============================================================ */

/* ── Design Tokens ──────────────────────────────────────────── */
:root {
  --accent:        #1e40af;
  --accent-light:  #3b82f6;
  --accent-dark:   #1e3a8a;
  --accent-subtle: #eff6ff;
  --success:       #16a34a;
  --success-bg:    #f0fdf4;
  --warning:       #d97706;
  --warning-bg:    #fffbeb;
  --danger:        #dc2626;
  --danger-bg:     #fef2f2;

  --bg:            #f8fafc;
  --surface:       #ffffff;
  --surface-2:     #f1f5f9;
  --border:        #e2e8f0;
  --border-focus:  #93c5fd;

  --text-primary:  #0f172a;
  --text-secondary:#334155;
  --text-muted:    #64748b;
  --text-faint:    #94a3b8;

  --radius-sm:     6px;
  --radius:        10px;
  --radius-lg:     14px;
  --radius-xl:     20px;

  --shadow-sm:     0 1px 2px rgba(0,0,0,.06);
  --shadow:        0 2px 8px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
  --shadow-lg:     0 8px 32px rgba(0,0,0,.10), 0 2px 8px rgba(0,0,0,.06);
  --shadow-modal:  0 20px 60px rgba(0,0,0,.18), 0 4px 16px rgba(0,0,0,.10);

  --font:          'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --mono:          'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  --transition:    .18s cubic-bezier(.4,0,.2,1);
}

/* ── Reset & Base ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── Typography ─────────────────────────────────────────── */
h1, h2, h3, h4 { line-height: 1.3; font-weight: 700; }
a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-dark); }
code {
  font-family: var(--mono);
  font-size: .82em;
  background: var(--surface-2);
  border: 1px solid var(--border);
  padding: .1em .4em;
  border-radius: var(--radius-sm);
}

/* ── Scrollbar ─────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-faint); }

/* ── Buttons ────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .55rem 1.1rem;
  border-radius: var(--radius);
  font-size: .875rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background var(--transition), color var(--transition),
              border-color var(--transition), box-shadow var(--transition), transform var(--transition);
  white-space: nowrap;
  user-select: none;
}
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .55; cursor: not-allowed; }

.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn-primary:hover:not(:disabled) {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  box-shadow: 0 4px 12px rgba(30,64,175,.35);
}

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

.btn-danger {
  background: var(--danger);
  color: #fff;
  border-color: var(--danger);
}
.btn-danger:hover:not(:disabled) {
  background: #b91c1c;
  box-shadow: 0 4px 12px rgba(220,38,38,.3);
}

.btn-sm { padding: .35rem .75rem; font-size: .8rem; }

/* ── Form elements ─────────────────────────────────────── */
input[type="text"],
input[type="number"],
input[type="search"],
input[type="password"],
select,
textarea {
  width: 100%;
  padding: .6rem .85rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text-primary);
  font-size: .9rem;
  font-family: var(--font);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--accent-light);
  box-shadow: 0 0 0 3px rgba(59,130,246,.15);
}
textarea { resize: vertical; min-height: 80px; }
select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%236b7280'%3E%3Cpath fill-rule='evenodd' d='M5.293 7.293a1 1 0 011.414 0L10 10.586l3.293-3.293a1 1 0 111.414 1.414l-4 4a1 1 0 01-1.414 0l-4-4a1 1 0 010-1.414z' clip-rule='evenodd'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right .7rem center; background-size: 1rem; padding-right: 2.2rem; }

/* ── Cards ──────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 1.5rem;
}
.card-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: .3rem;
}
.card-subtitle {
  font-size: .875rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

/* ── Toast Notifications ────────────────────────────────── */
.toast-container {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: .5rem;
  pointer-events: none;
}
.toast {
  padding: .75rem 1.1rem;
  border-radius: var(--radius);
  font-size: .875rem;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  pointer-events: all;
  animation: toastIn .25s ease forwards;
  max-width: 320px;
  display: flex;
  align-items: center;
  gap: .5rem;
}
.toast.success { background: var(--success); color: #fff; }
.toast.error   { background: var(--danger);  color: #fff; }
.toast.warning { background: var(--warning); color: #fff; }
.toast.fade-out { animation: toastOut .3s ease forwards; }

@keyframes toastIn  { from { opacity:0; transform:translateX(1rem); } to { opacity:1; transform:none; } }
@keyframes toastOut { from { opacity:1; transform:none; }  to { opacity:0; transform:translateX(1rem); } }

/* ── Modal ──────────────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.45);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  backdrop-filter: blur(2px);
  animation: fadeIn .18s ease;
}
@keyframes fadeIn { from { opacity:0; } to { opacity:1; } }

.modal {
  background: var(--surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-modal);
  width: 100%;
  max-width: 640px;
  max-height: 90vh;
  overflow-y: auto;
  animation: slideUp .22s cubic-bezier(.34,1.56,.64,1);
}
.modal-sm { max-width: 400px; }
@keyframes slideUp { from { opacity:0; transform:translateY(1.5rem) scale(.97); } to { opacity:1; transform:none; } }

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
}
.modal-header h2 { font-size: 1.05rem; font-weight: 700; }
.modal-close {
  background: none; border: none; cursor: pointer;
  font-size: 1.5rem; line-height: 1;
  color: var(--text-muted); padding: .2rem .5rem;
  border-radius: var(--radius-sm);
  transition: background var(--transition), color var(--transition);
}
.modal-close:hover { background: var(--surface-2); color: var(--text-primary); }

.modal-body { padding: 1.5rem; }
.modal-body p { color: var(--text-secondary); font-size: .9rem; line-height: 1.6; }

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: .75rem;
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

/* ── Field groups ───────────────────────────────────────── */
.field-group { margin-bottom: 1rem; }
.field-label {
  display: block;
  font-size: .78rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: .4rem;
  text-transform: uppercase;
  letter-spacing: .04em;
}
.field-label.required::after { content: ' *'; color: var(--danger); }

/* ── Form grid (2 cols) ─────────────────────────────────── */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 1rem; }
.form-col   { grid-column: span 1; }
.form-col-full { grid-column: span 2; }
@media (max-width: 520px) {
  .form-grid { grid-template-columns: 1fr; }
  .form-col, .form-col-full { grid-column: span 1; }
}

/* ── Utility ────────────────────────────────────────────── */
.visually-hidden { position:absolute; width:1px; height:1px; overflow:hidden; clip:rect(0,0,0,0); }