/* OMSai Enterprises - storefront + admin styles
   Self-contained (no external CSS framework / CDN dependency). */

:root {
  --navy: #0f3460;
  --navy-dark: #0a2647;
  --amber: #f5a623;
  --amber-dark: #d98c0f;
  --bg: #f7f8fa;
  --card: #ffffff;
  --text: #1c2530;
  --text-muted: #6b7280;
  --border: #e3e6ea;
  --success: #1a9c5c;
  --error: #c0392b;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(15, 52, 96, 0.08), 0 1px 2px rgba(15, 52, 96, 0.06);
  --shadow-md: 0 4px 14px rgba(15, 52, 96, 0.12);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

a { color: var(--navy); text-decoration: none; }
a:hover { color: var(--amber-dark); }

.container { max-width: 1180px; margin: 0 auto; padding: 0 20px; }
.section { padding: 32px 0; }
.section-title { font-size: 1.4rem; margin-bottom: 16px; color: var(--navy-dark); }

/* ---------------- Header ---------------- */

.site-header { background: var(--card); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 50; }
.topbar { background: var(--navy-dark); color: #fff; font-size: 0.82rem; }
.topbar-inner { display: flex; justify-content: space-between; align-items: center; padding: 6px 20px; }
.topbar-inner a { color: #fff; }
.topbar-contact a { margin-left: 12px; }

.navbar { display: flex; align-items: center; gap: 24px; padding: 14px 20px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark { font-size: 1.8rem; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { color: var(--navy-dark); font-size: 1.05rem; }
.brand-text small { color: var(--text-muted); font-size: 0.72rem; }

.search-form { flex: 1; min-width: 220px; display: flex; }
.search-form input { flex: 1; padding: 10px 14px; border: 1px solid var(--border); border-radius: 8px 0 0 8px; font-size: 0.9rem; }
.search-form input:focus { outline: none; border-color: var(--navy); }
.search-form button { padding: 0 16px; border: none; background: var(--navy); color: #fff; border-radius: 0 8px 8px 0; cursor: pointer; }

.nav-links { display: flex; align-items: center; gap: 20px; }
.nav-links > a { font-weight: 500; color: var(--text); white-space: nowrap; }
.cart-link { position: relative; }
.cart-badge { position: absolute; top: -8px; right: -14px; background: var(--amber); color: var(--navy-dark); font-size: 0.68rem; font-weight: 700; padding: 1px 6px; border-radius: 10px; }

.dropdown { position: relative; }
.dropdown-menu { display: none; position: absolute; right: 0; top: 100%; background: #fff; border: 1px solid var(--border); border-radius: 8px; box-shadow: var(--shadow-md); min-width: 170px; padding: 6px; z-index: 60; }
.dropdown:hover .dropdown-menu { display: block; }
.dropdown-menu a, .dropdown-menu .link-btn { display: block; padding: 8px 10px; border-radius: 6px; width: 100%; text-align: left; }
.dropdown-menu a:hover, .dropdown-menu .link-btn:hover { background: var(--bg); }

.category-strip { background: var(--navy); overflow-x: auto; }
.category-strip-inner { display: flex; gap: 18px; padding: 10px 20px; white-space: nowrap; }
.category-strip-inner a { color: #dce6f5; font-size: 0.85rem; }
.category-strip-inner a:hover { color: #fff; }

/* ---------------- Buttons ---------------- */

.btn { display: inline-block; padding: 10px 18px; border-radius: 8px; font-weight: 600; font-size: 0.9rem; border: none; cursor: pointer; text-align: center; transition: transform 0.05s ease, box-shadow 0.15s ease; }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--amber); color: var(--navy-dark); }
.btn-primary:hover { background: var(--amber-dark); color: var(--navy-dark); }
.btn-secondary { background: #eef1f5; color: var(--text); }
.btn-secondary:hover { background: #e2e6ec; color: var(--text); }
.btn-danger { background: #fde8e6; color: var(--error); }
.btn-danger:hover { background: #f9d3cf; color: var(--error); }
.btn-link { display: block; text-align: center; margin-top: 8px; }
.btn-block { display: block; width: 100%; }
.btn-lg { padding: 13px 22px; font-size: 1rem; }
.btn-sm { padding: 6px 12px; font-size: 0.8rem; }
.btn[disabled] { opacity: 0.55; cursor: not-allowed; }
.link-btn { background: none; border: none; color: var(--navy); cursor: pointer; font: inherit; padding: 0; }

/* ---------------- Flash messages ---------------- */

.flash-container { padding-top: 14px; display: flex; flex-direction: column; gap: 8px; }
.flash { padding: 12px 16px; border-radius: 8px; font-size: 0.9rem; }
.flash-success { background: #e5f7ee; color: var(--success); border: 1px solid #bfead4; }
.flash-error { background: #fdeceb; color: var(--error); border: 1px solid #f6cbc6; }

/* ---------------- Hero ---------------- */

.hero { background: linear-gradient(120deg, var(--navy) 0%, var(--navy-dark) 100%); color: #fff; }
.hero-inner { display: flex; align-items: center; justify-content: space-between; padding: 56px 20px; gap: 24px; flex-wrap: wrap; }
.hero-text { max-width: 560px; }
.hero-text h1 { font-size: 2.1rem; line-height: 1.25; margin: 0 0 14px; }
.hero-text h1 span { color: var(--amber); }
.hero-text p { color: #cdd8ea; margin-bottom: 22px; }
.hero-icon { font-size: 4rem; opacity: 0.9; }

/* ---------------- Category grid ---------------- */

.category-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 14px; }
.category-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px 12px; text-align: center; display: flex; flex-direction: column; align-items: center; gap: 8px; font-weight: 600; font-size: 0.85rem; color: var(--text); box-shadow: var(--shadow); }
.category-card:hover { box-shadow: var(--shadow-md); color: var(--navy); }
.category-card-icon { font-size: 1.8rem; }

/* ---------------- Product grid / cards ---------------- */

.product-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 18px; }
.product-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); display: flex; flex-direction: column; }
.product-card:hover { box-shadow: var(--shadow-md); }
.product-card-image { position: relative; background: #eef2f7; height: 130px; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.product-card-image img { width: 100%; height: 100%; object-fit: cover; }
.product-emoji { font-size: 2.6rem; }
.badge { position: absolute; top: 8px; font-size: 0.68rem; font-weight: 700; padding: 3px 8px; border-radius: 12px; }
.badge-discount { left: 8px; background: var(--success); color: #fff; }
.badge-outofstock { right: 8px; background: var(--error); color: #fff; }
.product-card-body { padding: 14px; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.product-brand { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--text-muted); }
.product-name { font-weight: 600; color: var(--text); font-size: 0.92rem; min-height: 2.6em; }
.product-price-row { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.product-price-row-lg { font-size: 1.1rem; }
.product-price { font-weight: 700; color: var(--navy-dark); font-size: 1.05rem; }
.product-mrp { text-decoration: line-through; color: var(--text-muted); font-size: 0.85rem; }
.product-unit { font-size: 0.78rem; color: var(--text-muted); }
.add-to-cart-form { margin-top: auto; }
.add-to-cart-form-lg { display: flex; align-items: flex-end; gap: 12px; margin-top: 20px; flex-wrap: wrap; }
.add-to-cart-form-lg label { display: block; font-size: 0.8rem; margin-bottom: 4px; color: var(--text-muted); }
.add-to-cart-form-lg input[type=number] { width: 80px; padding: 9px; border: 1px solid var(--border); border-radius: 8px; }

/* ---------------- Products listing layout ---------------- */

.products-layout { display: grid; grid-template-columns: 220px 1fr; gap: 28px; align-items: start; }
.filters-sidebar h3 { font-size: 1rem; margin-bottom: 10px; }
.filter-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 4px; }
.filter-list a { display: block; padding: 8px 10px; border-radius: 6px; font-size: 0.88rem; color: var(--text); }
.filter-list a.active, .filter-list a:hover { background: var(--navy); color: #fff; }
.products-toolbar { display: flex; align-items: center; gap: 14px; margin-bottom: 18px; flex-wrap: wrap; }
.products-toolbar h1 { font-size: 1.4rem; margin: 0; flex: 1; }
.result-count { color: var(--text-muted); font-size: 0.85rem; }
.sort-form select { padding: 8px 10px; border: 1px solid var(--border); border-radius: 8px; }

.empty-state { text-align: center; padding: 60px 20px; color: var(--text-muted); }
.empty-state .btn { margin-top: 14px; }

/* ---------------- Product detail ---------------- */

.breadcrumbs { font-size: 0.82rem; color: var(--text-muted); margin-bottom: 18px; }
.product-detail-layout { display: grid; grid-template-columns: 340px 1fr; gap: 32px; }
.product-detail-image { background: #eef2f7; border-radius: var(--radius); display: flex; align-items: center; justify-content: center; font-size: 5rem; min-height: 300px; overflow: hidden; }
.product-detail-image img { width: 100%; height: 100%; object-fit: cover; }
.product-detail-info h1 { font-size: 1.5rem; margin: 6px 0 12px; }
.product-unit-label { color: var(--text-muted); font-size: 0.85rem; }
.stock-ok { color: var(--success); font-weight: 600; }
.stock-out { color: var(--error); font-weight: 600; }
.product-description { color: var(--text); margin-top: 14px; line-height: 1.7; }

/* ---------------- Cart & checkout ---------------- */

.cart-layout { display: grid; grid-template-columns: 1fr 320px; gap: 28px; align-items: start; }
.cart-table { width: 100%; border-collapse: collapse; background: var(--card); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.cart-table th, .cart-table td { padding: 12px 14px; text-align: left; border-bottom: 1px solid var(--border); font-size: 0.88rem; }
.cart-table th { background: #f0f3f7; font-size: 0.78rem; text-transform: uppercase; color: var(--text-muted); }
.cart-brand { font-size: 0.75rem; color: var(--text-muted); }
.qty-input { width: 60px; padding: 6px; border: 1px solid var(--border); border-radius: 6px; }
.remove-btn { color: var(--error); font-size: 1rem; }

.cart-summary { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); position: sticky; top: 90px; }
.cart-summary h3 { margin-top: 0; }
.summary-row { display: flex; justify-content: space-between; padding: 8px 0; font-size: 0.9rem; }
.summary-item-row { display: flex; justify-content: space-between; padding: 4px 0; font-size: 0.82rem; color: var(--text-muted); }
.summary-total { border-top: 1px solid var(--border); margin-top: 6px; font-weight: 700; font-size: 1.05rem; color: var(--navy-dark); }

.checkout-layout { display: grid; grid-template-columns: 1fr 320px; gap: 28px; align-items: start; }
.checkout-form { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); }
.checkout-form h3 { margin-top: 0; color: var(--navy-dark); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 20px; }
.form-field { display: flex; flex-direction: column; gap: 5px; }
.form-field-full { grid-column: 1 / -1; }
.form-field label { font-size: 0.82rem; color: var(--text-muted); font-weight: 600; }
.form-field input, .form-field textarea, .form-field select {
  padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 0.9rem; font-family: inherit;
}
.form-field input:focus, .form-field textarea:focus, .form-field select:focus { outline: none; border-color: var(--navy); }

.payment-options { display: flex; flex-direction: column; gap: 10px; margin-bottom: 22px; }
.payment-option { display: flex; align-items: center; gap: 10px; border: 1px solid var(--border); border-radius: 8px; padding: 12px 14px; cursor: pointer; }
.payment-option:has(input:checked) { border-color: var(--navy); background: #f3f7fc; }
.payment-option.disabled { opacity: 0.5; cursor: not-allowed; }

.confirmation-box { text-align: center; padding: 30px 0; }
.confirmation-icon { font-size: 3rem; }
.order-number-line { color: var(--text-muted); }
.order-summary-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); margin-bottom: 24px; }
.order-summary-card h3 { margin-top: 18px; }

/* ---------------- Auth ---------------- */

.auth-section { display: flex; justify-content: center; }
.auth-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 30px; width: 100%; max-width: 420px; box-shadow: var(--shadow); }
.auth-card h1 { margin-top: 0; font-size: 1.4rem; }
.auth-card form { display: flex; flex-direction: column; gap: 14px; }
.auth-switch { text-align: center; margin-top: 16px; font-size: 0.88rem; color: var(--text-muted); }
.login-tabs { display: flex; gap: 8px; margin-bottom: 20px; }
.tab-btn { flex: 1; padding: 10px; border: 1px solid var(--border); background: #f7f8fa; border-radius: 8px; font-weight: 600; font-size: 0.88rem; cursor: pointer; color: var(--text-muted); }
.tab-btn.active { background: var(--navy); color: #fff; border-color: var(--navy); }
.muted-text { color: var(--text-muted); }
.back-link { display: inline-block; margin-bottom: 10px; font-size: 0.85rem; }

/* ---------------- Status badges ---------------- */

.status-badge { display: inline-block; padding: 4px 10px; border-radius: 12px; font-size: 0.75rem; font-weight: 700; text-transform: capitalize; }
.status-pending { background: #fdf1d6; color: #a3690a; }
.status-processing { background: #dbeafe; color: #1d4ed8; }
.status-shipped { background: #e0e7ff; color: #4338ca; }
.status-delivered { background: #dcfce7; color: #15803d; }
.status-cancelled { background: #fde2e1; color: var(--error); }
.status-paid { background: #dcfce7; color: #15803d; }
.status-failed { background: #fde2e1; color: var(--error); }
.status-refunded { background: #e0e7ff; color: #4338ca; }

/* ---------------- Pay-later / due payment ---------------- */
.pay-due-box {
  margin-top: 16px; padding: 14px 16px; border-radius: 10px;
  background: #fdf1d6; border: 1px solid #f5d896;
}
.pay-due-box p { margin: 0 0 10px; }
.pay-due-box form { margin: 0; }
.pay-now-inline { margin: 0; display: inline; }
.pay-now-inline button { padding: 5px 12px; font-size: 0.8rem; }

/* ---------------- Trust strip ---------------- */

.trust-strip { background: var(--card); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.trust-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; padding: 28px 20px; }
.trust-item { display: flex; gap: 12px; align-items: flex-start; }
.trust-item span { font-size: 1.6rem; }
.trust-item strong { display: block; margin-bottom: 2px; }
.trust-item p { margin: 0; color: var(--text-muted); font-size: 0.85rem; }

/* ---------------- Footer ---------------- */

.site-footer { background: var(--navy-dark); color: #cdd8ea; margin-top: 30px; }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 24px; padding: 40px 20px; }
.footer-grid h4 { color: #fff; margin-bottom: 12px; }
.footer-grid a { display: block; color: #cdd8ea; margin-bottom: 6px; font-size: 0.88rem; }
.footer-grid p { margin: 0 0 6px; font-size: 0.88rem; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding: 14px 20px; text-align: center; font-size: 0.8rem; }

/* ---------------- PWA install bar ---------------- */
.pwa-install-bar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 500;
  background: var(--navy); color: #fff;
  display: flex; align-items: center; justify-content: center; gap: 14px;
  padding: 10px 16px; font-size: 0.88rem; flex-wrap: wrap; text-align: center;
  box-shadow: 0 -2px 10px rgba(0,0,0,0.15);
}
.pwa-install-bar .btn-sm { padding: 6px 14px; }
.pwa-install-bar .link-btn { color: #cdd8ea; font-size: 1rem; }

/* ---------------- Admin layout ---------------- */

.admin-body { background: var(--bg); }
.admin-layout { display: flex; min-height: 100vh; }
.admin-sidebar { width: 230px; background: var(--navy-dark); color: #fff; padding: 20px 14px; display: flex; flex-direction: column; }
.admin-brand { font-weight: 700; font-size: 1rem; margin-bottom: 24px; display: flex; flex-direction: column; gap: 4px; }
.admin-brand small { color: #a9bcd8; font-weight: 400; font-size: 0.72rem; }
.admin-nav { display: flex; flex-direction: column; gap: 4px; }
.admin-nav a, .admin-logout-btn { color: #dce6f5; padding: 10px 12px; border-radius: 8px; text-align: left; }
.admin-nav a.active, .admin-nav a:hover, .admin-logout-btn:hover { background: rgba(255,255,255,0.08); color: #fff; }
.admin-nav form { margin-top: auto; }
.admin-main { flex: 1; padding: 28px 34px; max-width: 1100px; }
.admin-main h1 { margin-top: 0; }
.admin-toolbar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; flex-wrap: wrap; gap: 12px; }
.admin-panel { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); margin-bottom: 20px; }
.admin-two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; align-items: start; }
.admin-login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: var(--navy-dark); }

.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 14px; margin-bottom: 24px; }
.stat-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 4px; text-decoration: none; color: inherit; }
a.stat-card:hover { border-color: var(--primary, #1a73e8); cursor: pointer; }
.stat-value { font-size: 1.5rem; font-weight: 700; color: var(--navy-dark); }
.stat-label { font-size: 0.8rem; color: var(--text-muted); }

.status-form { display: flex; gap: 10px; }
.status-form select { padding: 8px 10px; border: 1px solid var(--border); border-radius: 8px; }

/* ---------------- Responsive ---------------- */

@media (max-width: 900px) {
  .products-layout, .cart-layout, .checkout-layout, .product-detail-layout, .admin-two-col { grid-template-columns: 1fr; }
  .cart-summary { position: static; }
  .admin-layout { flex-direction: column; }
  .admin-sidebar { width: 100%; flex-direction: row; flex-wrap: wrap; align-items: center; }
  .admin-nav { flex-direction: row; flex-wrap: wrap; }
  .admin-nav form { margin-top: 0; }
}

@media (max-width: 640px) {
  .navbar { flex-direction: column; align-items: stretch; }
  .form-grid { grid-template-columns: 1fr; }
}