/* =========================
   Site-wide light / dark theme
   Toggle via html[data-theme]
   ========================= */

[data-theme="dark"] {
  color-scheme: dark;
  --primary: #f5f0f0;
  --bg: #2a2a32;
  --bg-soft: #32323c;
  --metal-dark: #d4c8c8;
  --metal-light: #5a4048;
  --white: #363640;
  --surface: #3a3a44;
  --surface-muted: #42424e;
  --surface-highlight: #4c4c58;
  --text: #f5f0f0;
  --text-muted: #b8b0b8;
  --heading-accent: #ff6b6b;
  --accent: #b0a8b0;
  --border: rgba(255, 255, 255, 0.14);
  --border-bright: rgba(255, 255, 255, 0.22);
  --input-bg: #40404a;
  --header-bg: rgba(48, 48, 56, 0.92);
  --header-border: rgba(255, 255, 255, 0.14);
  --nav-mobile-bg: rgba(42, 42, 50, 0.98);
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --glow-sm:
    0 0 0 1px rgba(255, 255, 255, 0.07),
    0 4px 18px rgba(255, 255, 255, 0.06),
    0 8px 28px rgba(0, 0, 0, 0.35);
  --glow-md:
    0 0 0 1px rgba(255, 255, 255, 0.1),
    0 4px 24px rgba(255, 255, 255, 0.08),
    0 12px 48px rgba(255, 255, 255, 0.05),
    0 16px 40px rgba(0, 0, 0, 0.45);
  --glow-lg:
    0 0 0 1px rgba(255, 255, 255, 0.12),
    0 8px 32px rgba(255, 255, 255, 0.1),
    0 20px 56px rgba(255, 255, 255, 0.06),
    0 24px 48px rgba(0, 0, 0, 0.5);
  --glow-hover:
    0 0 0 1px rgba(255, 255, 255, 0.16),
    0 6px 28px rgba(255, 255, 255, 0.12),
    0 16px 48px rgba(255, 255, 255, 0.08),
    0 20px 44px rgba(211, 47, 47, 0.12);
  --shadow-elevated: var(--glow-md);
  --inset-highlight: inset 0 1px 0 rgba(255, 255, 255, 0.12);
}

/* Ambient page background */
[data-theme="dark"] body {
  background:
    radial-gradient(ellipse 90% 50% at 50% -10%, rgba(255, 255, 255, 0.06), transparent 50%),
    radial-gradient(ellipse 60% 40% at 100% 50%, rgba(211, 47, 47, 0.08), transparent 45%),
    radial-gradient(ellipse 50% 35% at 0% 80%, rgba(255, 255, 255, 0.04), transparent 40%),
    var(--bg);
}

[data-theme="dark"] section {
  background: transparent;
}

[data-theme="dark"] body > header {
  background: var(--header-bg);
  border-color: var(--header-border);
  box-shadow: var(--glow-md);
}

[data-theme="dark"] .steel-loader {
  background: var(--bg);
}

[data-theme="dark"] .steel-loader-text {
  color: var(--heading-accent);
}

/* Hero — keep headline & subtitle light (not var(--white) surface token) */
[data-theme="dark"] .hero .hero-content,
[data-theme="dark"] .hero .hero-content h1 {
  color: #f5f5f5;
}

[data-theme="dark"] .hero .hero-content h1 {
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.35);
}

[data-theme="dark"] .hero .hero-content p {
  color: #d8d4d8;
}

/* Shared glowing card surface */
[data-theme="dark"] .product-card,
[data-theme="dark"] .service-item,
[data-theme="dark"] .about-panel,
[data-theme="dark"] #contact .contact-two-col,
[data-theme="dark"] #contact .contact-info-col,
[data-theme="dark"] #contact .contact-form-col,
[data-theme="dark"] .contact-form,
[data-theme="dark"] #variationModal .modal-content {
  background: linear-gradient(
    155deg,
    var(--surface-highlight) 0%,
    var(--surface) 42%,
    #303038 100%
  );
  border: 1px solid var(--border);
  box-shadow: var(--glow-md), var(--inset-highlight);
  transition:
    box-shadow 0.35s ease,
    border-color 0.35s ease,
    transform 0.35s ease;
}

[data-theme="dark"] .product-card:hover,
[data-theme="dark"] .service-item:hover,
[data-theme="dark"] .about-panel:hover {
  border-color: var(--border-bright);
  box-shadow: var(--glow-hover), var(--inset-highlight);
}

/* Section headings */
[data-theme="dark"] .section-title,
[data-theme="dark"] h2.section-title {
  color: var(--text-muted) !important;
  text-shadow: 0 0 24px rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .section-desc {
  color: var(--metal-dark);
}

[data-theme="dark"] .section-title .metal-gradient,
[data-theme="dark"] .section-title span[style*="d32f2f"],
[data-theme="dark"] .about-accent {
  color: var(--heading-accent) !important;
  -webkit-text-fill-color: unset;
  text-shadow: 0 0 20px rgba(255, 107, 107, 0.35);
}

/* About / Transformation */
[data-theme="dark"] .about-section {
  background:
    radial-gradient(ellipse 80% 60% at 10% 0%, rgba(255, 255, 255, 0.05), transparent 50%),
    radial-gradient(ellipse 70% 50% at 100% 100%, rgba(211, 47, 47, 0.12), transparent 50%),
    transparent;
}

[data-theme="dark"] .about-media {
  border: 1px solid var(--border);
  box-shadow: var(--glow-lg), var(--inset-highlight);
}

[data-theme="dark"] .about-tab {
  background: linear-gradient(160deg, var(--surface-highlight), var(--surface-muted));
  border-color: var(--border);
  color: var(--text);
  box-shadow: var(--glow-sm);
}

[data-theme="dark"] .about-tab:hover {
  border-color: var(--border-bright);
  box-shadow: var(--glow-sm), 0 0 16px rgba(255, 255, 255, 0.06);
}

[data-theme="dark"] .about-tab.is-active {
  background: linear-gradient(135deg, #3d3038 0%, #3a2830 50%, #2e2430 100%);
  border-color: rgba(255, 120, 120, 0.45);
  color: var(--text);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.1),
    0 4px 20px rgba(255, 255, 255, 0.08),
    0 8px 28px rgba(211, 47, 47, 0.25);
}

[data-theme="dark"] .about-detail h3 {
  color: var(--text);
}

[data-theme="dark"] .about-detail-num {
  color: rgba(255, 255, 255, 0.12);
}

[data-theme="dark"] .about-nav-btn {
  background: linear-gradient(160deg, var(--surface-highlight), var(--surface-muted));
  border-color: var(--border);
  color: var(--text);
  box-shadow: var(--glow-sm), var(--inset-highlight);
}

[data-theme="dark"] .about-nav-btn:hover {
  border-color: var(--border-bright);
  box-shadow: var(--glow-hover);
}

[data-theme="dark"] .about-dot {
  background: rgba(255, 255, 255, 0.25);
}

[data-theme="dark"] .about-dot.is-active {
  background: linear-gradient(90deg, var(--heading-accent), #ff9a8b);
  box-shadow: 0 0 12px rgba(255, 107, 107, 0.5);
}

[data-theme="dark"] .about-tag {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.18);
  box-shadow: 0 0 16px rgba(255, 255, 255, 0.06);
}

/* Join us */
[data-theme="dark"] .join-us-carousel-placeholder {
  background: linear-gradient(
    145deg,
    var(--surface-highlight) 0%,
    #2e2430 50%,
    rgba(211, 47, 47, 0.15) 100%
  );
  border: 1px solid var(--border);
  box-shadow: var(--glow-md), var(--inset-highlight);
  color: var(--heading-accent);
}

[data-theme="dark"] .join-us-form input[type="text"],
[data-theme="dark"] .join-us-form input[type="email"] {
  background: linear-gradient(180deg, var(--input-bg), #383842);
  color: var(--text);
  border-color: var(--border);
  box-shadow: var(--inset-highlight), 0 2px 12px rgba(255, 255, 255, 0.04);
}

[data-theme="dark"] .join-us-form input:focus {
  border-color: rgba(255, 255, 255, 0.25);
  box-shadow:
    var(--inset-highlight),
    0 0 0 3px rgba(255, 255, 255, 0.06),
    0 0 20px rgba(211, 47, 47, 0.15);
}

[data-theme="dark"] .file-label {
  background: linear-gradient(160deg, var(--surface-highlight), var(--surface-muted));
  color: var(--text);
  border-color: var(--border);
  box-shadow: var(--glow-sm), var(--inset-highlight);
}

[data-theme="dark"] .join-us-perks li {
  color: var(--text);
}

[data-theme="dark"] .join-us-perks span {
  color: var(--metal-dark);
}

/* Footer */
[data-theme="dark"] footer {
  background: linear-gradient(180deg, #34343e 0%, #282830 100%);
  border-top: 1px solid var(--border);
  box-shadow: 0 -8px 32px rgba(255, 255, 255, 0.04);
}

/* Contact (inline overrides) */
[data-theme="dark"] #contact .contact-two-col {
  background: linear-gradient(
    155deg,
    var(--surface-highlight) 0%,
    var(--surface) 45%,
    #303038 100%
  ) !important;
  box-shadow: var(--glow-lg), var(--inset-highlight) !important;
  border: 1px solid var(--border) !important;
}

[data-theme="dark"] #contact .contact-info-col {
  background: linear-gradient(
    160deg,
    #323040 0%,
    var(--surface-muted) 100%
  ) !important;
  box-shadow: var(--glow-sm), var(--inset-highlight) !important;
  border: 1px solid var(--border) !important;
}

[data-theme="dark"] #contact .contact-info-col h2 span {
  color: var(--text) !important;
}

[data-theme="dark"] #contact .contact-info-col h4,
[data-theme="dark"] #contact .contact-form-col h3 {
  color: var(--text-muted) !important;
}

[data-theme="dark"] #contact .contact-info-col a,
[data-theme="dark"] #contact .contact-form-col label {
  color: var(--text) !important;
}

[data-theme="dark"] #contact .contact-form-col {
  border-color: var(--border) !important;
}

[data-theme="dark"] #contact input,
[data-theme="dark"] #contact textarea {
  background: linear-gradient(180deg, var(--input-bg), #383842) !important;
  border-color: var(--border) !important;
  color: var(--text) !important;
  box-shadow: var(--inset-highlight), 0 2px 10px rgba(255, 255, 255, 0.03) !important;
}

[data-theme="dark"] #contact input:focus,
[data-theme="dark"] #contact textarea:focus {
  border-color: rgba(255, 255, 255, 0.28) !important;
  box-shadow:
    var(--inset-highlight),
    0 0 0 3px rgba(255, 255, 255, 0.06),
    0 0 18px rgba(211, 47, 47, 0.12) !important;
}

[data-theme="dark"] #contact input::placeholder,
[data-theme="dark"] #contact textarea::placeholder {
  color: #8a828c !important;
}

[data-theme="dark"] #contact .file-upload-label {
  color: var(--text-muted) !important;
}

[data-theme="dark"] .contact-form input,
[data-theme="dark"] .contact-form textarea {
  background: linear-gradient(180deg, var(--input-bg), #383842);
  color: var(--text);
}

/* Modal */
[data-theme="dark"] #variationModal .modal-backdrop {
  background: rgba(0, 0, 0, 0.78);
}

[data-theme="dark"] #variationModal .modal-close {
  color: var(--text-muted);
}

[data-theme="dark"] #variationModal .modal-close:hover {
  color: var(--heading-accent);
}

/* Selling point cards */
[data-theme="dark"] .selling-point-card.why-card.card {
  border: 1px solid var(--border) !important;
  box-shadow:
    var(--glow-md),
    inset 0 0 0 1000px rgba(22, 20, 30, 0.65) !important;
}

[data-theme="dark"] .selling-point-card.why-card.card:hover {
  border-color: var(--border-bright) !important;
  box-shadow:
    var(--glow-hover),
    inset 0 0 0 1000px rgba(22, 20, 30, 0.6) !important;
}

[data-theme="dark"] .selling-point-card .contentBx h3,
[data-theme="dark"] .selling-point-card .contentBx span {
  color: #fff;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.5);
}

/* Product icon tiles — subtle lift */
[data-theme="dark"] .product-icon {
  box-shadow:
    var(--inset-highlight),
    0 4px 20px rgba(255, 255, 255, 0.08),
    0 8px 24px rgba(211, 47, 47, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Nav */
[data-theme="dark"] .skip-link {
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--glow-sm);
}

[data-theme="dark"] .nav-close-btn {
  color: var(--text);
}

[data-theme="dark"] .nav-toggle span {
  background: var(--text);
}

[data-theme="dark"] nav a:hover,
[data-theme="dark"] nav a.active {
  box-shadow: 0 0 16px rgba(211, 47, 47, 0.35);
}

/* Toggle button — soft glow */
[data-theme="dark"] .modern-toggle-btn {
  box-shadow: 0 0 12px rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .modern-toggle-btn.active {
  box-shadow: 0 0 18px rgba(255, 255, 255, 0.12);
}