/* ===========================================================
   Freelancer Invoice Generator — Styles
   Theme: Dark mode · Premium · Glassmorphism
   =========================================================== */

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

:root {
  --primary: #6C5CE7;
  --primary-light: #A29BFE;
  --accent: #00CEC9;
  --bg: #0B0E11;
  --bg-card: rgba(20, 24, 32, 0.7);
  --bg-hover: rgba(108, 92, 231, 0.08);
  --border: rgba(108, 92, 231, 0.15);
  --glass-border: rgba(255, 255, 255, 0.06);
  --text: #E8E6F0;
  --text-muted: #8B8A9E;
  --text-dim: #5A5872;
  --success: #00B894;
  --danger: #FF6B6B;
  --radius: 12px;
  --radius-sm: 8px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --transition: 220ms ease;
}

html { font-size: 16px; -webkit-font-smoothing: antialiased; }
body { font-family: var(--font); background: var(--bg); color: var(--text); min-height: 100vh; line-height: 1.5; }
.app-container { max-width: 1200px; margin: 0 auto; padding: 24px 20px 60px; }

/* Header */
.app-header { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; margin-bottom: 20px; }
.logo-group { display: flex; align-items: center; gap: 12px; }
.app-header h1 { font-size: 1.35rem; font-weight: 700; background: linear-gradient(135deg, var(--primary-light), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.tagline { font-size: 0.82rem; color: var(--text-muted); margin-top: 2px; }
.header-actions { display: flex; gap: 8px; }

/* Buttons */
.btn { border: none; cursor: pointer; font-family: var(--font); font-weight: 600; border-radius: var(--radius-sm); transition: all var(--transition); }
.btn-sm { font-size: 0.78rem; padding: 6px 14px; }
.btn-xs { font-size: 0.7rem; padding: 3px 8px; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: #5B4BD5; }
.btn-ghost { background: transparent; color: var(--text-muted); }
.btn-ghost:hover { background: var(--bg-hover); color: var(--text); }
.btn-accent { background: var(--accent); color: #0B0E11; }
.btn-accent:hover { background: #00B5B0; }

/* Layout */
.main-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* Form */
.form-panel { display: flex; flex-direction: column; gap: 12px; }
.form-card { background: var(--bg-card); border: 1px solid var(--glass-border); border-radius: var(--radius); padding: 16px; backdrop-filter: blur(12px); display: flex; flex-direction: column; gap: 8px; }
.form-title { font-size: 0.85rem; font-weight: 600; color: var(--primary-light); margin-bottom: 4px; }
.form-title-row { display: flex; align-items: center; justify-content: space-between; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.form-group { display: flex; flex-direction: column; gap: 3px; }
.form-group label { font-size: 0.72rem; color: var(--text-muted); font-weight: 500; }
.form-input { background: rgba(0,0,0,0.3); border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--text); font-family: var(--font); font-size: 0.82rem; padding: 8px 10px; outline: none; width: 100%; transition: border-color var(--transition); }
.form-input:focus { border-color: var(--primary); }
.form-textarea { resize: vertical; }

/* Items */
.items-list { display: flex; flex-direction: column; gap: 6px; }
.item-row { display: grid; grid-template-columns: 2fr 1fr 1fr auto; gap: 6px; align-items: center; }
.item-row input { font-size: 0.78rem; }

/* Preview */
.preview-panel { background: var(--bg-card); border: 1px solid var(--glass-border); border-radius: var(--radius); backdrop-filter: blur(12px); position: sticky; top: 20px; max-height: calc(100vh - 40px); overflow-y: auto; }
.preview-header { padding: 14px 16px; border-bottom: 1px solid var(--glass-border); }
.preview-header h2 { font-size: 0.9rem; font-weight: 600; }

.invoice-preview { padding: 24px; background: #fff; color: #1a1a2e; border-radius: 0 0 var(--radius) var(--radius); font-size: 0.8rem; min-height: 400px; }
.inv-header { display: flex; justify-content: space-between; margin-bottom: 24px; }
.inv-title { font-size: 1.5rem; font-weight: 800; color: #6C5CE7; }
.inv-meta { text-align: right; font-size: 0.75rem; color: #666; }
.inv-parties { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 20px; }
.inv-party h3 { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.05em; color: #999; margin-bottom: 4px; }
.inv-party p { font-size: 0.8rem; color: #333; margin: 1px 0; }
.inv-table { width: 100%; border-collapse: collapse; margin-bottom: 16px; }
.inv-table th { text-align: left; font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.05em; color: #999; border-bottom: 2px solid #eee; padding: 6px 0; }
.inv-table td { padding: 8px 0; border-bottom: 1px solid #f3f3f3; font-size: 0.8rem; }
.inv-table .text-right { text-align: right; }
.inv-totals { text-align: right; margin-top: 8px; }
.inv-totals p { font-size: 0.8rem; color: #555; margin: 3px 0; }
.inv-totals .total { font-size: 1.1rem; font-weight: 700; color: #6C5CE7; }
.inv-notes { margin-top: 20px; padding-top: 12px; border-top: 1px solid #eee; font-size: 0.75rem; color: #888; }

/* Scrollbar */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(108,92,231,0.2); border-radius: 3px; }

/* Responsive */
@media (max-width: 768px) {
  .main-layout { grid-template-columns: 1fr; }
  .app-header { flex-direction: column; align-items: flex-start; }
  .preview-panel { position: static; max-height: none; }
  .item-row { grid-template-columns: 1fr 1fr; }
}