/* ============================================
   PROBUILDER BRAND COLORS
============================================ */
:root {
    --brand-blue-dark: #0C2A44;
    --brand-blue: #1A3A5C;
    --brand-blue-light: #2A5580;
    --brand-orange: #FF9933;
    --brand-orange-dark: #E67E22;
    --brand-green: #16A34A;
    --brand-red: #E53935;
    --text-dark: #111827;
    --text-medium: #4B5563;
    --text-light: #9CA3AF;
    --bg-page: #F4F5F7;
    --bg-card: #FFFFFF;
    --border-light: #E5E7EB;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.5;
}

header {
    background: #2d3436;
    border-bottom: 3px solid #e67e22;
    padding: 12px 12px 12px 20px;
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 12px rgba(0,0,0,.25);
}
.logo {
    font-family: 'Barlow Condensed', sans-serif;
    font-weight: 900;
    font-size: 20px;
    letter-spacing: 2px;
    color: #f5a623;
    text-transform: uppercase;
    line-height: 1.1;
}
.logo span { color: #fff; font-size: 24px; }
.logo-sub {
    font-size: 10px;
    letter-spacing: 4px;
    color: #8899aa;
    text-transform: uppercase;
    margin-top: 1px;
}

.header-controls {
    display: flex;
    align-items: flex-end;
    gap: 6px;
    align-self: flex-end;
    margin-right: 0px;
}

.country-toggle {
    display: flex;
    gap: 6px;
}

.country-btn {
    padding: 6px 12px;
    background: transparent;
    border: 1px solid #444;
    color: #888;
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 1px;
    cursor: pointer;
    border-radius: 4px;
    transition: all .15s;
}

.country-btn:hover {
    border-color: #e67e22;
    color: #e67e22;
}

.country-btn.active {
    background: #e67e22;
    border-color: #e67e22;
    color: #fff;
}

.unit-btn {
    padding: 6px 12px;
    background: transparent;
    border: 1px solid #444;
    color: #888;
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 1px;
    cursor: pointer;
    border-radius: 4px;
}

.container {
    padding: 10px;
    max-width: 500px;
    margin: 0 auto;
}

.input-section {
    background: #fff;
    border-radius: 10px;
    margin-bottom: 15px;
    overflow: hidden;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.section-header {
    background: var(--brand-blue);
    color: white;
    padding: 13px 16px;
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.3px;
}

.rebar-header {
    background: var(--brand-green);
}

.section-selector {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 15px;
    background: #fff;
    border-bottom: 1px solid var(--border-light);
}

.item-dropdown {
    flex: 1;
    padding: 10px 12px;
    font-size: 1rem;
    border: 1px solid #ccc;
    border-radius: 8px;
    background: #fff;
    cursor: pointer;
}

.item-dropdown:focus {
    outline: none;
    border-color: #1976d2;
    box-shadow: 0 0 0 2px rgba(25,118,210,0.2);
}

.edit-name-btn {
    background: var(--brand-orange);
    color: #fff;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    font-size: 1.2rem;
    cursor: pointer;
    transition: background 0.15s;
    box-shadow: 0 1px 3px rgba(0,0,0,0.12);
}

.edit-name-btn:hover {
    background: var(--brand-orange-dark);
}

.edit-name-btn:active {
    background: var(--brand-orange-dark);
    transform: scale(0.96);
}

.input-card {
    padding: 5px 0;
}

.input-group {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 16px;
    border-bottom: 1px solid var(--border-light);
}

.input-group:last-child {
    border-bottom: none;
}

.input-group label {
    font-size: 0.95rem;
    color: var(--text-dark);
    font-weight: 500;
    flex: 1;
}

.input-group input {
    width: 110px;
    padding: 10px 14px;
    border: 1.5px solid var(--border-light);
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    text-align: right;
    background: #fff;
    transition: all 0.15s;
}

.input-group input:focus {
    outline: none;
    border-color: var(--brand-blue);
    box-shadow: 0 0 0 3px rgba(26, 58, 92, 0.12);
}

.input-group input:hover {
    border-color: var(--text-light);
}

/* Hide number input spinners for cleaner mobile feel */
.input-group input[type="number"]::-webkit-outer-spin-button,
.input-group input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.input-group input[type="number"] {
    -moz-appearance: textfield;
    appearance: textfield;
}

.unit-label, .unit-label-vol {
    color: #888;
    font-size: 0.85rem;
}

.calculate-btn {
    width: 100%;
    background: var(--brand-green);
    color: white;
    border: none;
    padding: 16px;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    margin-top: 12px;
    margin-bottom: 10px;
    letter-spacing: 0.3px;
    box-shadow: 0 2px 5px rgba(22, 163, 74, 0.25);
    transition: all 0.15s;
}

.calculate-btn:hover {
    background: #15803D;
    box-shadow: 0 3px 8px rgba(22, 163, 74, 0.35);
}

.calculate-btn:active {
    transform: scale(0.98);
    box-shadow: 0 1px 3px rgba(22, 163, 74, 0.3);
}

.clear-btn {
    width: 100%;
    background: var(--brand-red);
    color: white;
    border: none;
    padding: 14px;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    margin-bottom: 20px;
    letter-spacing: 0.3px;
    box-shadow: 0 2px 5px rgba(229, 57, 53, 0.25);
    transition: all 0.15s;
}

.clear-btn:hover {
    background: #C62828;
    box-shadow: 0 3px 8px rgba(229, 57, 53, 0.35);
}

.clear-btn:active {
    transform: scale(0.98);
    box-shadow: 0 1px 3px rgba(229, 57, 53, 0.3);
}

.ad-banner {
    background: #fafafa;
    border: 1.5px dashed #d1d5db;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #9ca3af;
    font-size: 0.75rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    font-weight: 500;
}

.ad-top {
    height: 50px;
    margin: 10px;
    border-radius: 5px;
}

.ad-mid {
    height: 100px;
    margin: 15px 10px;
    border-radius: 8px;
}

.ad-bottom {
    height: 250px;
    margin: 15px 10px;
    border-radius: 10px;
}

@media (max-width: 400px) {
    .app-header h1 {
        font-size: 1rem;
    }
    .input-group input {
        width: 80px;
    }
    .country-btn, .unit-btn {
        padding: 5px 10px;
        font-size: 0.8rem;
    }
}

/* App Footer */
.app-footer {
  background: var(--brand-blue);
  border-top: 2px solid var(--brand-orange);
  padding: 18px 24px;
  text-align: center;
  margin-top: 30px;
}

.footer-legal {
  margin-top: 10px;
  font-size: 12px;
  color: #ffffff;
  opacity: 0.8;
}

.footer-legal a {
  color: #ffffff;
  text-decoration: none;
  margin: 0 6px;
}

.footer-legal a:hover {
  text-decoration: underline;
}

.footer-brand {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 10px;
}

.footer-links {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.footer-links a {
  color: rgba(255,255,255,0.75);
  text-decoration: none;
  font-size: 12px;
  letter-spacing: 1px;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--brand-orange);
}

.footer-divider {
  color: rgba(255,255,255,0.4);
  font-size: 12px;
}

/* ─── PARTNER ADS ─── */
.partner-supplier{display:none;margin:10px;padding:10px 14px;background:#f0f7ff;border:1px solid #d0e0f0;border-radius:8px;font-size:12px;line-height:1.5;}
.partner-supplier.active{display:flex;align-items:center;gap:12px;}
.partner-supplier img{width:50px;height:50px;border-radius:6px;object-fit:contain;border:1px solid #ddd;background:#fff;}
.partner-supplier .ps-info{flex:1;}
.partner-supplier .ps-name{font-weight:bold;color:#1a1a1a;font-size:13px;}
.partner-supplier .ps-tagline{color:#555;font-size:11px;}
.partner-supplier .ps-contact{margin-top:4px;font-size:11px;}
.partner-supplier .ps-contact a{color:#4472C4;text-decoration:none;}
.partner-supplier .ps-label{font-size:9px;color:#999;letter-spacing:0.5px;text-transform:uppercase;}
.ps-all-card{display:flex;align-items:center;gap:12px;padding:10px 14px;background:#f0f7ff;border:1px solid #d0e0f0;border-radius:8px;font-size:12px;line-height:1.5;margin-bottom:8px;}
.ps-all-card img{width:50px;height:50px;border-radius:6px;object-fit:contain;border:1px solid #ddd;background:#fff;}
.ps-all-card .ps-info{flex:1;}
.ps-all-card .ps-name{font-weight:bold;color:#1a1a1a;font-size:13px;}
.ps-all-card .ps-tagline{color:#555;font-size:11px;}
.ps-all-card .ps-contact{margin-top:4px;font-size:11px;}
.ps-all-card .ps-contact a{color:#4472C4;text-decoration:none;}
.ps-all-card .ps-label{font-size:9px;color:#999;letter-spacing:0.5px;text-transform:uppercase;}
#viewAllSponsorsBtn{display:none;width:100%;padding:12px;background:#f0f7ff;border:1px solid #d0e0f0;border-radius:8px;color:#4472C4;font-size:13px;font-weight:600;cursor:pointer;text-align:center;margin:10px 0;}
#allSponsorsPanel{display:none;padding:0 10px;}