/* ============================================================
   styles.css — BuildQuotes design system
   Dark premium theme matching the Build ecosystem
   ============================================================ */

/* ── Fonts & Reset ─────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

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

:root {
  --bg:           #0a0b14;
  --bg-card:      #12131f;
  --bg-input:     #1a1b2e;
  --border:       rgba(255,255,255,0.08);
  --border-focus: rgba(79,70,229,0.5);
  --accent:       #4F46E5;
  --accent-hover: #6366f1;
  --text-primary: #f0f0f5;
  --text-secondary: #a0a0b8;
  --text-muted:   #5a5a7a;
  --radius:       12px;
  --radius-sm:    8px;
  --success:      #10b981;
  --error:        #ef4444;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
}

/* ── Navbar ────────────────────────────────────────────────── */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.875rem 1.5rem;
  background: rgba(10,11,20,0.95);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
}

.navbar-brand {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.3px;
}

.navbar-links { display: flex; gap: 1.5rem; }
.navbar-links a {
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}
.navbar-links a:hover { color: var(--accent); }

/* ── Hero Banner ────────────────────────────────────────────── */
.hero-banner {
  text-align: center;
  padding: 2rem 1.5rem 1.5rem;
  background: radial-gradient(ellipse at 50% 0%, rgba(79,70,229,0.15) 0%, transparent 70%);
  border-bottom: 1px solid var(--border);
}
.hero-banner h1 {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: 800;
  background: linear-gradient(135deg, #fff 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.5rem;
}
.hero-banner p { color: var(--text-secondary); font-size: 1rem; }

/* ── App Container ──────────────────────────────────────────── */
.app-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  max-width: 1300px;
  margin: 1.5rem auto;
  padding: 0 1.5rem;
}

@media (max-width: 900px) {
  .app-container { grid-template-columns: 1fr; }
}

/* ── Form Panel ─────────────────────────────────────────────── */
.form-panel {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.form-section-header {
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid var(--border);
  background: rgba(255,255,255,0.02);
}
.form-section-header h3 { font-size: 0.875rem; font-weight: 700; color: var(--text-primary); }

.form-body { padding: 1.25rem; display: flex; flex-direction: column; gap: 0.875rem; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}
.form-row.full { grid-template-columns: 1fr; }
.form-row.triple { grid-template-columns: 1fr 1fr 1fr; }

.form-group { display: flex; flex-direction: column; gap: 0.35rem; }
.form-group label { font-size: 0.75rem; font-weight: 600; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.5px; }

input, textarea, select {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.875rem;
  padding: 0.5rem 0.75rem;
  transition: border-color 0.2s;
  width: 100%;
}
input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(79,70,229,0.15);
}
input::placeholder, textarea::placeholder { color: var(--text-muted); }
textarea { resize: vertical; min-height: 70px; }
select option { background: var(--bg-card); }

.color-row { display: flex; gap: 0.5rem; align-items: center; }
input[type="color"] {
  width: 44px; height: 36px; padding: 2px; cursor: pointer; border-radius: var(--radius-sm);
}

/* ── Line Items ─────────────────────────────────────────────── */
.line-items-header {
  display: grid;
  grid-template-columns: 1fr 60px 90px 80px 32px;
  gap: 0.5rem;
  padding: 0.4rem 1.25rem;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border);
}

#lineItems { padding: 0.5rem 1.25rem; display: flex; flex-direction: column; gap: 0.5rem; }

.line-item-row {
  display: grid;
  grid-template-columns: 1fr 60px 90px 80px 32px;
  gap: 0.5rem;
  align-items: center;
}
.li-desc  { } 
.li-qty   { text-align: center; }
.li-rate  { }
.li-amount {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  text-align: right;
}
.btn-remove-item {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-muted);
  border-radius: 6px;
  width: 28px;
  height: 28px;
  cursor: pointer;
  font-size: 0.75rem;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}
.btn-remove-item:hover { border-color: var(--error); color: var(--error); }

.btn-add-item {
  margin: 0.5rem 1.25rem 1rem;
  background: none;
  border: 1px dashed var(--border);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  padding: 0.5rem;
  cursor: pointer;
  font-size: 0.8rem;
  font-family: inherit;
  width: calc(100% - 2.5rem);
  transition: all 0.2s;
}
.btn-add-item:hover { border-color: var(--accent); color: var(--accent); }

/* ── Totals Display ─────────────────────────────────────────── */
.totals-display {
  margin: 0 1.25rem 1.25rem;
  background: rgba(79,70,229,0.05);
  border: 1px solid rgba(79,70,229,0.15);
  border-radius: var(--radius-sm);
  padding: 0.875rem 1rem;
}
.totals-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.875rem;
  color: var(--text-secondary);
  padding: 0.2rem 0;
}
.totals-row.total {
  font-weight: 800;
  font-size: 1rem;
  color: var(--accent);
  border-top: 1px solid rgba(79,70,229,0.2);
  margin-top: 0.4rem;
  padding-top: 0.5rem;
}

/* ── Download Button ─────────────────────────────────────────── */
.btn-download {
  width: 100%;
  background: linear-gradient(135deg, var(--accent), var(--accent-hover));
  color: #fff;
  border: none;
  border-radius: var(--radius);
  padding: 0.875rem;
  font-size: 1rem;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 0 4px 20px rgba(79,70,229,0.3);
}
.btn-download:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(79,70,229,0.4);
}
.btn-download:disabled { opacity: 0.6; cursor: not-allowed; }

/* ── Preview Panel ──────────────────────────────────────────── */
.preview-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  position: sticky;
  top: 72px;
  max-height: calc(100vh - 100px);
  display: flex;
  flex-direction: column;
}

.preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.875rem 1.25rem;
  border-bottom: 1px solid var(--border);
  background: rgba(255,255,255,0.02);
}
.preview-header h3 { font-size: 0.875rem; font-weight: 700; }
.preview-badge {
  font-size: 0.7rem;
  background: rgba(79,70,229,0.15);
  color: var(--accent);
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
  font-weight: 600;
}

.preview-body {
  flex: 1;
  overflow-y: auto;
  padding: 1rem;
  background: #f0f0f0;
}
.preview-body::-webkit-scrollbar { width: 6px; }
.preview-body::-webkit-scrollbar-track { background: transparent; }
.preview-body::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* ── Toast ───────────────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 0.75rem 1.5rem;
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 600;
  z-index: 9999;
  transition: transform 0.3s ease;
  pointer-events: none;
  white-space: nowrap;
}
.toast.show { transform: translateX(-50%) translateY(0); }
.toast--success { border-color: var(--success); color: var(--success); }
.toast--error   { border-color: var(--error);   color: var(--error); }

/* ── Site Footer ─────────────────────────────────────────────── */
.site-footer {
  text-align: center;
  padding: 2rem 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-top: 3rem;
}
.site-footer a { color: var(--text-muted); text-decoration: none; }
.site-footer a:hover { color: var(--accent); }