/* =============================================
   CAPKHITUOI.SUN-MIA.COM – Premium CSS
   ============================================= */

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

:root {
  --primary: #f97316;
  --primary-dark: #ea580c;
  --primary-light: #fed7aa;
  --accent: #0ea5e9;
  --dark: #0f172a;
  --dark-2: #1e293b;
  --dark-3: #334155;
  --mid: #64748b;
  --light: #f8fafc;
  --white: #ffffff;
  --border: rgba(255,255,255,0.12);
  --glass: rgba(255,255,255,0.08);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.12);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.15);
  --shadow-lg: 0 20px 60px rgba(0,0,0,0.2);
  --radius: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
}

html { scroll-behavior: smooth; }
body {
  font-family: 'Be Vietnam Pro', sans-serif;
  background: var(--dark);
  color: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.hidden { display: none !important; }

/* ── HEADER ── */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(15,23,42,0.92);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  max-width: 1200px; margin: 0 auto; padding: 0 20px;
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.logo-link { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.logo-img { width: 38px; height: 38px; object-fit: contain; border-radius: 8px; }
.logo-text { font-size: 1.2rem; font-weight: 800; color: var(--primary); letter-spacing: -0.5px; }
.nav-links { display: flex; align-items: center; gap: 8px; }
.nav-links a {
  color: #cbd5e1; text-decoration: none; font-size: 0.9rem; font-weight: 500;
  padding: 6px 14px; border-radius: 8px; transition: var(--transition);
}
.nav-links a:hover { color: var(--white); background: var(--glass); }
.btn-nav {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark)) !important;
  color: var(--white) !important; font-weight: 600 !important;
  border-radius: 8px !important;
}
.btn-nav:hover { transform: translateY(-1px); box-shadow: 0 4px 16px rgba(249,115,22,0.4) !important; }
.hamburger {
  display: none; background: none; border: 1px solid var(--border); color: var(--white);
  font-size: 1.2rem; padding: 6px 10px; border-radius: 8px; cursor: pointer;
}
.mobile-menu {
  display: none; flex-direction: column; gap: 4px; padding: 12px 20px 16px;
  border-top: 1px solid var(--border);
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  color: #cbd5e1; text-decoration: none; padding: 10px 14px; border-radius: 8px;
  font-size: 0.95rem; transition: var(--transition);
}
.mobile-menu a:hover { background: var(--glass); color: var(--white); }

/* ── HERO ── */
.hero {
  min-height: 100vh;
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 40%, #0c1a2e 100%);
  display: flex; align-items: center; justify-content: center;
  padding: 120px 20px 80px;
  position: relative; overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(249,115,22,0.12) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(14,165,233,0.1) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(249,115,22,0.06) 0%, transparent 40%);
}
.hero-content { position: relative; max-width: 700px; z-index: 1; }
.hero-badge {
  display: inline-block; background: rgba(249,115,22,0.15); border: 1px solid rgba(249,115,22,0.3);
  color: var(--primary); padding: 6px 16px; border-radius: 100px; font-size: 0.85rem;
  font-weight: 600; margin-bottom: 24px;
}
.hero-title {
  font-size: clamp(2.4rem, 5vw, 4rem); font-weight: 800; line-height: 1.15;
  margin-bottom: 20px; letter-spacing: -1px;
}
.hero-accent {
  background: linear-gradient(135deg, var(--primary) 0%, #fb923c 50%, var(--accent) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-desc { font-size: 1.1rem; color: #94a3b8; margin-bottom: 36px; max-width: 560px; line-height: 1.7; }
.hero-ctas { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 48px; }
.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--white); padding: 14px 28px; border-radius: 12px;
  font-weight: 700; font-size: 0.95rem; text-decoration: none;
  transition: var(--transition); border: none; cursor: pointer;
  box-shadow: 0 4px 24px rgba(249,115,22,0.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 32px rgba(249,115,22,0.5); }
.btn-secondary {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--glass); border: 1px solid var(--border);
  color: var(--white); padding: 14px 28px; border-radius: 12px;
  font-weight: 600; font-size: 0.95rem; text-decoration: none;
  transition: var(--transition);
}
.btn-secondary:hover { background: rgba(255,255,255,0.12); transform: translateY(-2px); }
.btn-outline {
  display: inline-flex; align-items: center; gap: 8px;
  background: transparent; border: 2px solid var(--primary);
  color: var(--primary); padding: 13px 28px; border-radius: 12px;
  font-weight: 700; font-size: 0.95rem; text-decoration: none;
  transition: var(--transition);
}
.btn-outline:hover { background: var(--primary); color: var(--white); }
.hero-stats { display: flex; align-items: center; gap: 20px; }
.stat { text-align: center; }
.stat-num { display: block; font-size: 1.6rem; font-weight: 800; color: var(--primary); }
.stat-label { font-size: 0.75rem; color: #94a3b8; white-space: nowrap; }
.stat-divider { width: 1px; height: 40px; background: var(--border); }
.hero-visual { position: relative; z-index: 1; }
.hero-card-float {
  display: flex; align-items: center; gap: 14px;
  background: rgba(255,255,255,0.08); border: 1px solid var(--border);
  backdrop-filter: blur(20px); border-radius: 16px; padding: 16px 24px;
  animation: float 4s ease-in-out infinite;
}
.hero-card-icon { font-size: 2.5rem; }
.hero-card-title { font-weight: 700; font-size: 1rem; }
.hero-card-sub { color: #94a3b8; font-size: 0.8rem; margin-top: 2px; }
@keyframes float { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-12px)} }

/* ── FEATURES BAR ── */
.features-bar {
  background: rgba(249,115,22,0.08); border-top: 1px solid rgba(249,115,22,0.2);
  border-bottom: 1px solid rgba(249,115,22,0.2);
  display: flex; flex-wrap: wrap; justify-content: center; gap: 0; overflow: hidden;
}
.feature-item {
  display: flex; align-items: center; gap: 8px; padding: 16px 32px;
  font-size: 0.9rem; font-weight: 600; color: #e2e8f0;
  border-right: 1px solid rgba(255,255,255,0.08);
  transition: var(--transition);
}
.feature-item:last-child { border-right: none; }
.feature-item:hover { color: var(--primary); background: rgba(249,115,22,0.05); }
.feature-item span { font-size: 1.1rem; }

/* ── SECTIONS ── */
.section-header { text-align: center; margin-bottom: 56px; }
.section-badge {
  display: inline-block; background: rgba(249,115,22,0.1); border: 1px solid rgba(249,115,22,0.25);
  color: var(--primary); padding: 5px 16px; border-radius: 100px; font-size: 0.82rem;
  font-weight: 600; margin-bottom: 16px;
}
.section-title {
  font-size: clamp(1.8rem, 3vw, 2.6rem); font-weight: 800;
  margin-bottom: 14px; letter-spacing: -0.5px;
}
.section-desc { color: #94a3b8; font-size: 1rem; max-width: 560px; margin: 0 auto; }

/* ── PRODUCTS ── */
.products-section { padding: 100px 0; }
.filter-bar { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 40px; align-items: center; }
.search-input {
  flex: 1; min-width: 240px; background: rgba(255,255,255,0.06);
  border: 1px solid var(--border); border-radius: 10px;
  padding: 12px 18px; color: var(--white); font-family: inherit; font-size: 0.9rem;
  outline: none; transition: var(--transition);
}
.search-input:focus { border-color: var(--primary); background: rgba(249,115,22,0.06); }
.search-input::placeholder { color: #64748b; }
.filter-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  background: rgba(255,255,255,0.06); border: 1px solid var(--border);
  color: #94a3b8; padding: 7px 16px; border-radius: 100px; font-size: 0.82rem;
  font-weight: 600; cursor: pointer; transition: var(--transition); font-family: inherit;
}
.tag:hover { border-color: var(--primary); color: var(--primary); }
.tag.active { background: var(--primary); border-color: var(--primary); color: var(--white); }

.products-loading { text-align: center; padding: 80px 20px; color: #64748b; }
.spinner {
  width: 44px; height: 44px; border: 3px solid rgba(249,115,22,0.2);
  border-top-color: var(--primary); border-radius: 50%; animation: spin 0.8s linear infinite;
  margin: 0 auto 16px;
}
@keyframes spin { to { transform: rotate(360deg); } }

.products-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 24px; }
.product-card {
  background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg); overflow: hidden;
  transition: var(--transition); cursor: pointer;
  display: flex; flex-direction: column;
}
.product-card:hover {
  transform: translateY(-6px); border-color: rgba(249,115,22,0.35);
  box-shadow: 0 20px 48px rgba(249,115,22,0.12);
}
.product-img-wrap { position: relative; aspect-ratio: 1; overflow: hidden; background: rgba(255,255,255,0.03); }
.product-img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.product-card:hover .product-img { transform: scale(1.06); }
.product-badge {
  position: absolute; top: 12px; left: 12px;
  background: var(--primary); color: var(--white);
  padding: 3px 10px; border-radius: 100px; font-size: 0.72rem; font-weight: 700;
}
.product-body { padding: 18px; flex: 1; display: flex; flex-direction: column; gap: 10px; }
.product-group { font-size: 0.72rem; font-weight: 600; color: var(--primary); text-transform: uppercase; letter-spacing: 0.5px; }
.product-name { font-size: 0.95rem; font-weight: 700; line-height: 1.4; color: var(--white); }
.product-price { font-size: 1.15rem; font-weight: 800; color: var(--primary); margin-top: auto; }
.product-price-note { font-size: 0.72rem; color: #64748b; font-weight: 400; margin-top: 2px; }
.product-actions { display: flex; gap: 8px; padding: 0 18px 18px; }
.btn-buy {
  flex: 1; background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--white); border: none; border-radius: 10px; padding: 10px;
  font-weight: 700; font-size: 0.85rem; cursor: pointer; font-family: inherit;
  transition: var(--transition);
}
.btn-buy:hover { transform: translateY(-1px); box-shadow: 0 4px 16px rgba(249,115,22,0.4); }
.btn-detail {
  background: rgba(255,255,255,0.06); color: #94a3b8; border: 1px solid var(--border);
  border-radius: 10px; padding: 10px 14px; font-size: 0.85rem; cursor: pointer;
  font-family: inherit; transition: var(--transition); white-space: nowrap;
}
.btn-detail:hover { color: var(--white); border-color: rgba(255,255,255,0.2); }

.products-empty { text-align: center; padding: 80px 20px; color: #64748b; }
.empty-icon { font-size: 3rem; margin-bottom: 12px; }

/* ── WHY US ── */
.why-us { padding: 100px 0; background: linear-gradient(180deg, transparent, rgba(249,115,22,0.04), transparent); }
.why-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 24px; }
.why-card {
  background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg); padding: 32px 28px;
  transition: var(--transition);
}
.why-card:hover {
  border-color: rgba(249,115,22,0.25); transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(249,115,22,0.08);
}
.why-icon { font-size: 2.4rem; margin-bottom: 16px; }
.why-card h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 10px; }
.why-card p { color: #94a3b8; font-size: 0.9rem; line-height: 1.6; }

/* ── CTA BANNER ── */
.cta-banner {
  background: linear-gradient(135deg, rgba(249,115,22,0.15), rgba(14,165,233,0.08));
  border-top: 1px solid rgba(249,115,22,0.2); border-bottom: 1px solid rgba(249,115,22,0.2);
  padding: 80px 0; text-align: center;
}
.cta-banner h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); font-weight: 800; margin-bottom: 12px; }
.cta-banner p { color: #94a3b8; margin-bottom: 32px; font-size: 1rem; }
.cta-buttons { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ── CONTACT ── */
.contact-section { padding: 100px 0; }
.contact-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: 48px; }
.contact-info h3, .contact-form h3 {
  font-size: 1.3rem; font-weight: 700; margin-bottom: 28px;
}
.contact-item {
  display: flex; gap: 16px; margin-bottom: 24px; align-items: flex-start;
}
.contact-item > span { font-size: 1.4rem; margin-top: 2px; flex-shrink: 0; }
.contact-item strong { display: block; font-size: 0.85rem; color: #94a3b8; margin-bottom: 3px; }
.contact-item a { color: var(--primary); text-decoration: none; }
.contact-form {
  background: rgba(255,255,255,0.04); border: 1px solid var(--border);
  border-radius: var(--radius-xl); padding: 36px 32px;
}
.contact-form input, .contact-form textarea {
  display: block; width: 100%; margin-bottom: 14px;
  background: rgba(255,255,255,0.06); border: 1px solid var(--border);
  border-radius: 10px; padding: 12px 16px; color: var(--white);
  font-family: inherit; font-size: 0.9rem; outline: none; transition: var(--transition);
  resize: vertical;
}
.contact-form input:focus, .contact-form textarea:focus {
  border-color: var(--primary); background: rgba(249,115,22,0.06);
}
.contact-form input::placeholder, .contact-form textarea::placeholder { color: #64748b; }
.contact-form .btn-primary { width: 100%; justify-content: center; margin-top: 4px; }
.form-note { color: #64748b; font-size: 0.78rem; margin-top: 10px; text-align: center; }

/* ── FOOTER ── */
.footer { background: var(--dark-2); border-top: 1px solid var(--border); padding: 72px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.footer-brand .footer-logo { width: 44px; height: 44px; object-fit: contain; border-radius: 8px; margin-bottom: 14px; }
.footer-brand p { color: #64748b; font-size: 0.9rem; line-height: 1.6; margin-bottom: 20px; max-width: 260px; }
.footer-social { display: flex; gap: 12px; }
.footer-social a {
  display: flex; align-items: center; justify-content: center;
  width: 38px; height: 38px; background: var(--glass);
  border: 1px solid var(--border); border-radius: 10px;
  font-size: 1.1rem; text-decoration: none; transition: var(--transition);
}
.footer-social a:hover { border-color: var(--primary); background: rgba(249,115,22,0.12); }
.footer-links h4 { font-size: 0.9rem; font-weight: 700; margin-bottom: 20px; color: var(--white); }
.footer-links a {
  display: block; color: #64748b; text-decoration: none; font-size: 0.88rem;
  margin-bottom: 10px; transition: var(--transition);
}
.footer-links a:hover { color: var(--primary); }
.footer-bottom {
  border-top: 1px solid var(--border); padding: 20px 0;
  text-align: center; color: #475569; font-size: 0.83rem;
}

/* ── TOAST ── */
.cart-toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(100px);
  background: var(--dark-2); border: 1px solid rgba(249,115,22,0.4);
  border-radius: 12px; padding: 14px 24px; display: flex; align-items: center; gap: 10px;
  font-weight: 600; font-size: 0.9rem; box-shadow: var(--shadow-lg);
  transition: transform 0.4s cubic-bezier(0.34,1.56,0.64,1); z-index: 9999;
}
.cart-toast.show { transform: translateX(-50%) translateY(0); }
.toast-icon { font-size: 1.2rem; }

/* ── BACK TO TOP ── */
.back-top {
  position: fixed; bottom: 24px; right: 24px; z-index: 999;
  width: 44px; height: 44px; background: var(--primary);
  border: none; border-radius: 12px; color: var(--white);
  font-size: 1.2rem; cursor: pointer; transition: var(--transition);
  opacity: 0; pointer-events: none;
}
.back-top.visible { opacity: 1; pointer-events: all; }
.back-top:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(249,115,22,0.4); }

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: block; }
  .hero { padding: 100px 20px 60px; }
  .hero-ctas { flex-direction: column; }
  .hero-stats { gap: 12px; }
  .stat-num { font-size: 1.3rem; }
  .features-bar { flex-direction: column; align-items: stretch; }
  .feature-item { border-right: none; border-bottom: 1px solid rgba(255,255,255,0.06); justify-content: center; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
}
@media (max-width: 480px) {
  .products-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .contact-form { padding: 24px 20px; }
}