/*
 * Bimro Tile - Global Stylesheet
 * Plain CSS, no build step. Loaded on every page via <link>.
 * Page-specific styles live in css/pages/*.css, loaded after this file.
 */

/* ==========================================
   Design Tokens
   ========================================== */
:root {
  /* Brand colors */
  --color-navy: #1a242c;
  --color-navy-soft: #232f39;
  --color-red: #e31e24;
  --color-red-dark: #c51a1f;
  --color-cream: #f6f4f1;
  --color-white: #ffffff;

  /* Semantic colors */
  --color-bg-alt: var(--color-cream);
  --color-surface: var(--color-white);
  --color-text-on-dark: rgba(255, 255, 255, 0.92);
  --color-text-on-dark-muted: rgba(255, 255, 255, 0.68);
  --color-text-on-light: #2b2b2b;
  --color-text-on-light-muted: #5c5c5c;
  --color-border-on-dark: rgba(255, 255, 255, 0.12);
  --color-border-on-light: rgba(26, 36, 44, 0.1);

  /* Typography */
  --font-primary: "Montserrat", -apple-system, BlinkMacSystemFont, sans-serif;
  --step-fluid-h1: clamp(2.25rem, 1.7rem + 2vw, 3.5rem);
  --step-fluid-h2: clamp(1.75rem, 1.4rem + 1.2vw, 2.5rem);
  --step-fluid-h3: clamp(1.25rem, 1.1rem + 0.5vw, 1.5rem);
  --step-fluid-body: clamp(1rem, 0.95rem + 0.2vw, 1.0625rem);

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: clamp(1.5rem, 1.2rem + 1vw, 2.5rem);
  --space-lg: clamp(2.5rem, 2rem + 2vw, 4rem);
  --space-xl: clamp(3.5rem, 2.5rem + 3.5vw, 6.5rem);

  /* Shape & motion */
  --radius-sm: 6px;
  --radius-md: 12px;
  --shadow-soft: 0 10px 30px rgba(26, 36, 44, 0.12);
  --shadow-lift: 0 18px 40px rgba(26, 36, 44, 0.18);
  --ease-standard: cubic-bezier(0.4, 0, 0.2, 1);
  --duration-fast: 0.2s;
  --duration-base: 0.35s;
  --duration-slow: 0.6s;

  --container-width: 1280px;
  --header-height: 84px;
  --header-height-scrolled: 64px;
}

/* ==========================================
   Reset & Base
   ========================================== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  background-color: var(--color-bg-alt);
  color: var(--color-text-on-light);
  line-height: 1.6;
  font-size: var(--step-fluid-body);
  overflow-x: hidden;
}

img,
picture {
  max-width: 100%;
  display: block;
}

.icon {
  width: 1.1em;
  height: 1.1em;
  flex-shrink: 0;
}

h1,
h2,
h3,
h4 {
  font-weight: 500;
  line-height: 1.15;
  margin-bottom: var(--space-sm);
}

h1 {
  font-size: var(--step-fluid-h1);
  font-weight: 600;
}

h2 {
  font-size: var(--step-fluid-h2);
}

h3 {
  font-size: var(--step-fluid-h3);
}

p {
  margin-bottom: var(--space-sm);
}

a {
  color: var(--color-navy);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-standard);
}

a:hover {
  color: var(--color-red);
}

button {
  font-family: inherit;
}

.container {
  width: 92%;
  max-width: var(--container-width);
  margin-inline: auto;
}

main {
  display: block;
  padding-top: var(--header-height);
}

section {
  padding-block: var(--space-xl);
}

@media (max-width: 599px) {
  section {
    padding-block: var(--space-lg);
  }
}

.section-title {
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-red);
  margin-bottom: var(--space-xs);
}

.section-heading {
  text-align: center;
  margin-bottom: var(--space-lg);
}

.section-heading h2 {
  margin-bottom: var(--space-xs);
}

.section-heading p {
  max-width: 42rem;
  margin-inline: auto;
  color: var(--color-text-on-light-muted);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-red);
  color: var(--color-white);
  padding: 0.75rem 1.25rem;
  z-index: 1000;
  border-radius: 0 0 var(--radius-sm) 0;
}

.skip-link:focus {
  left: 0;
}

/* ==========================================
   Buttons
   ========================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.75rem;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--duration-fast) var(--ease-standard),
    background-color var(--duration-fast) var(--ease-standard),
    box-shadow var(--duration-fast) var(--ease-standard),
    color var(--duration-fast) var(--ease-standard);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background-color: var(--color-red);
  border-color: var(--color-red);
  color: var(--color-white);
}

.btn-primary:hover {
  background-color: var(--color-red-dark);
  border-color: var(--color-red-dark);
  color: var(--color-white);
  box-shadow: var(--shadow-soft);
}

.btn-secondary {
  background-color: transparent;
  border-color: currentColor;
  color: inherit;
}

.btn-secondary:hover {
  background-color: var(--color-navy);
  border-color: var(--color-navy);
  color: var(--color-white);
}

.btn-whatsapp {
  background-color: #25d366;
  border-color: #25d366;
  color: var(--color-white);
}

.btn-whatsapp:hover {
  background-color: #20ba5c;
  border-color: #20ba5c;
  color: var(--color-white);
  box-shadow: var(--shadow-soft);
}

.btn-ghost-on-dark {
  background-color: transparent;
  border-color: var(--color-border-on-dark);
  color: var(--color-text-on-dark);
}

.btn-ghost-on-dark:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.3);
  color: var(--color-white);
}

.btn-navy {
  background-color: var(--color-navy);
  border-color: var(--color-navy);
  color: var(--color-white);
}

.btn-navy:hover {
  background-color: var(--color-navy-soft);
  border-color: var(--color-navy-soft);
  color: var(--color-white);
  box-shadow: var(--shadow-soft);
}

/* ==========================================
   Header
   ========================================== */
.site-header {
  position: fixed;
  left: 0;
  right: 0;
  top: 0;
  z-index: 100;
  background-color: var(--color-navy);
  border-bottom: 1px solid var(--color-border-on-dark);
  transition: background-color var(--duration-base) var(--ease-standard),
    box-shadow var(--duration-base) var(--ease-standard);
}

.site-header.is-scrolled {
  background-color: rgba(26, 36, 44, 0.97);
  box-shadow: var(--shadow-soft);
}

.header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  transition: height var(--duration-base) var(--ease-standard);
}

.site-header.is-scrolled .header-bar {
  height: var(--header-height-scrolled);
}

.site-logo {
  display: flex;
  align-items: center;
}

.site-logo img {
  height: 42px;
  width: auto;
  transition: height var(--duration-base) var(--ease-standard);
}

.site-header.is-scrolled .site-logo img {
  height: 34px;
}

/* ==========================================
   Navigation (mobile-first: off-canvas panel by default)
   ========================================== */
.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 110;
}

.nav-toggle-bar {
  width: 100%;
  height: 2px;
  background-color: var(--color-white);
  border-radius: 2px;
  transition: transform var(--duration-base) var(--ease-standard),
    opacity var(--duration-base) var(--ease-standard);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

.primary-nav {
  position: fixed;
  inset: var(--header-height) 0 0 0;
  background-color: var(--color-navy);
  padding: var(--space-lg) var(--space-md);
  transform: translateY(-8px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--duration-base) var(--ease-standard),
    transform var(--duration-base) var(--ease-standard),
    visibility var(--duration-base);
  overflow-y: auto;
  z-index: 99;
}

.primary-nav.is-open {
  opacity: 1;
  transform: translateY(0);
  visibility: visible;
  pointer-events: auto;
}

.site-header.is-scrolled .primary-nav {
  top: var(--header-height-scrolled);
}

.primary-nav ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.primary-nav a {
  display: inline-block;
  position: relative;
  color: var(--color-text-on-dark);
  font-size: 1.4rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.primary-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  background-color: var(--color-red);
  transition: width var(--duration-base) var(--ease-standard);
}

.primary-nav a:hover::after,
.primary-nav a[aria-current="page"]::after {
  width: 100%;
}

.primary-nav a[aria-current="page"] {
  color: var(--color-white);
}

.primary-nav .nav-contact-btn {
  display: inline-flex;
  margin-top: var(--space-sm);
}

@media (min-width: 992px) {
  .nav-toggle {
    display: none;
  }

  .primary-nav {
    position: static;
    inset: auto;
    background: none;
    padding: 0;
    transform: none;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    overflow: visible;
  }

  .primary-nav ul {
    flex-direction: row;
    align-items: center;
    gap: var(--space-md);
  }

  .primary-nav a {
    font-size: 0.85rem;
    font-weight: 500;
  }

  .primary-nav .nav-contact-btn {
    margin-top: 0;
    padding: 0.6rem 1.5rem;
    background-color: var(--color-red);
    color: var(--color-white) !important;
    border-radius: var(--radius-sm);
  }

  .primary-nav .nav-contact-btn::after {
    display: none;
  }

  .primary-nav .nav-contact-btn:hover {
    background-color: var(--color-red-dark);
  }
}

/* ==========================================
   Footer
   ========================================== */
.site-footer {
  background-color: var(--color-navy);
  color: var(--color-text-on-dark-muted);
  padding-block: var(--space-xl) var(--space-md);
}

.footer-grid {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: 1fr;
}

.footer-brand img {
  height: 36px;
  width: auto;
  margin-bottom: var(--space-sm);
}

.footer-brand p {
  max-width: 28rem;
  color: var(--color-text-on-dark-muted);
}

.footer-social {
  display: flex;
  gap: 0.75rem;
  margin-top: var(--space-sm);
}

.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.08);
  color: var(--color-white);
  transition: background-color var(--duration-fast) var(--ease-standard),
    transform var(--duration-fast) var(--ease-standard);
}

.footer-social a:hover {
  background-color: var(--color-red);
  transform: translateY(-3px);
  color: var(--color-white);
}

.footer-heading {
  color: var(--color-white);
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-sm);
  position: relative;
  padding-bottom: 0.6rem;
}

.footer-heading::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 28px;
  height: 2px;
  background-color: var(--color-red);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-links a {
  color: var(--color-text-on-dark-muted);
  display: block;
  padding-block: 0.35rem;
}

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

.footer-contact-item {
  display: flex;
  gap: 0.6rem;
  margin-bottom: 0.6rem;
  align-items: flex-start;
}

.footer-contact-item a {
  color: var(--color-text-on-dark-muted);
}

.footer-contact-item a:hover {
  color: var(--color-white);
}

.footer-contact-item .icon {
  color: var(--color-red);
  flex-shrink: 0;
  margin-top: 0.2rem;
}

.footer-bottom {
  text-align: center;
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border-on-dark);
  font-size: 0.85rem;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 1.4fr 1fr 1fr;
  }
}

/* ==========================================
   WhatsApp Float Button
   ========================================== */
.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 58px;
  height: 58px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #25d366;
  color: var(--color-white);
  border-radius: 50%;
  box-shadow: var(--shadow-lift);
  z-index: 90;
  transition: transform var(--duration-fast) var(--ease-standard);
  animation: whatsapp-pulse 2.4s infinite;
}

.whatsapp-float:hover {
  transform: scale(1.08);
  background-color: #20ba5c;
}

.whatsapp-float svg {
  width: 28px;
  height: 28px;
}

@keyframes whatsapp-pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.5);
  }
  70% {
    box-shadow: 0 0 0 14px rgba(37, 211, 102, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .whatsapp-float {
    animation: none;
  }
}

/* ==========================================
   Cards (branch cards, collection cards, etc.)
   ========================================== */
.card {
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  transition: transform var(--duration-base) var(--ease-standard),
    box-shadow var(--duration-base) var(--ease-standard);
}

.card:hover,
.card:focus-within {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lift);
}

.card-media {
  overflow: hidden;
}

.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-standard);
}

.card:hover .card-media img {
  transform: scale(1.06);
}

.card-body {
  padding: var(--space-md);
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-radius: 999px;
  background-color: rgba(26, 36, 44, 0.06);
  color: var(--color-navy);
}

/* ==========================================
   Toast Notifications
   ========================================== */
.toast-container {
  position: fixed;
  bottom: 24px;
  left: 24px;
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-width: min(90vw, 320px);
}

.toast {
  background-color: var(--color-navy);
  color: var(--color-white);
  padding: 0.85rem 1.1rem;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lift);
  font-size: 0.9rem;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity var(--duration-base) var(--ease-standard),
    transform var(--duration-base) var(--ease-standard);
  border-left: 3px solid var(--color-red);
}

.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.toast-success {
  border-left-color: #25d366;
}

.toast-error {
  border-left-color: var(--color-red);
}

/* ==========================================
   Utilities
   ========================================== */
.text-center {
  text-align: center;
}

.bg-surface {
  background-color: var(--color-surface);
}

.bg-alt {
  background-color: var(--color-bg-alt);
}

.bg-navy {
  background-color: var(--color-navy);
  color: var(--color-text-on-dark);
}

.stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.cluster {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-sm);
}

/* ==========================================
   Animations: scroll reveal & page transitions
   ========================================== */
/* Reveal-on-scroll only activates once html.js confirms JavaScript is
   running (set by an inline script in <head>). Without JS, content is
   visible by default instead of being permanently stuck at opacity:0. */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--duration-slow) var(--ease-standard),
    transform var(--duration-slow) var(--ease-standard);
}

.js [data-reveal].is-revealed {
  opacity: 1;
  transform: translateY(0);
}

.js [data-reveal-group] > * {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--duration-slow) var(--ease-standard),
    transform var(--duration-slow) var(--ease-standard);
}

.js [data-reveal-group].is-revealed > * {
  opacity: 1;
  transform: translateY(0);
}

.js [data-reveal-group].is-revealed > *:nth-child(1) { transition-delay: 0ms; }
.js [data-reveal-group].is-revealed > *:nth-child(2) { transition-delay: 80ms; }
.js [data-reveal-group].is-revealed > *:nth-child(3) { transition-delay: 160ms; }
.js [data-reveal-group].is-revealed > *:nth-child(4) { transition-delay: 240ms; }
.js [data-reveal-group].is-revealed > *:nth-child(5) { transition-delay: 320ms; }
.js [data-reveal-group].is-revealed > *:nth-child(n+6) { transition-delay: 400ms; }

/* Cross-page transitions: progressive enhancement, no-ops on unsupported browsers */
@view-transition {
  navigation: auto;
}

::view-transition-old(root),
::view-transition-new(root) {
  animation-duration: 0.35s;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  [data-reveal],
  [data-reveal-group] > * {
    opacity: 1;
    transform: none;
    transition: none;
  }

  ::view-transition-group(*),
  ::view-transition-old(*),
  ::view-transition-new(*) {
    animation: none !important;
  }
}