/* ============================================================
   PT. Brilian Inovatek Nusantara — Architecture Base Stylesheet
   File   : ars-base.css
   Dipakai: Semua halaman Architecture & Interior
   Load   : <link rel="stylesheet" href="/css/ars-base.css">
   ============================================================ */

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

/* ── CSS VARIABLES ── */
:root {
  --primary  : #111111;       /* hitam utama (brand, aktif, hover) */
  --accent   : #555555;       /* abu gelap (elemen sekunder) */
  --accent2  : #f5f5f5;       /* abu sangat terang (background highlight) */
  --light    : #fafafa;       /* background section */
  --white    : #ffffff;       /* putih murni */
  --text     : #111111;       /* teks utama — hitam */
  --muted    : #888888;       /* teks sekunder / tidak aktif */
  --border   : #e0e0e0;       /* garis border halus */
  --font     : 'Segoe UI', Arial, sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--white);
}


/* ── NAVBAR ── */
nav {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 999;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.nav-inner {
  max-width: 100%;
  margin: 0;
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  height: 80px;
  gap: 16px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  flex-shrink: 0;
  overflow: visible;
}

.nav-logo img {
  height: 50px;
  width: auto;
  object-fit: contain;
  overflow: visible;
  display: block;
}

.nav-logo-fallback {
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.3;
  display: none;
}

.nav-taglines {
  display: flex;
  flex-direction: column;
  gap: 2px;
  justify-content: center;
  align-self: center;
}

.nav-tagline-main {
  font-size: 0.82rem;
  color: var(--accent);
  letter-spacing: 0.08em;
  font-weight: bold;
  font-style: italic;
}

/* ── NAV MENU ── */
.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 4px;
  margin: 0;
  padding: 0;
  margin-left: auto;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: block;
  padding: 8px 16px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  position: relative;
  transition: color 0.25s ease;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--text);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0px;
  left: 16px;
  right: 16px;
  height: 2px;
  background: var(--text);
  transform: scaleX(0);
  transition: transform 0.25s ease;
}

.nav-link:hover::after {
  transform: scaleX(1);
}

.nav-item-active .nav-link {
  color: var(--text);
  font-weight: 700;
}

.nav-item-active .nav-link::after {
  content: '';
  position: absolute;
  bottom: 0px;
  left: 16px;
  right: 16px;
  height: 2px;
  background: var(--text);
  transform: scaleX(1);
  border-radius: 0;
}

.nav-logo-name {
  font-size: 0.6rem;
  letter-spacing: 0.18em;
  color: var(--muted);
  text-transform: uppercase;
  margin-top: 1px;
}

/* ── HAMBURGER (mobile) ── */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  flex-shrink: 0;
  margin-left: auto;
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

.nav-hamburger.nav-hamburger-open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-hamburger.nav-hamburger-open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav-hamburger.nav-hamburger-open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}


/* ── FOOTER ── */
footer {
  background: var(--primary);
  color: var(--white);
}

.footer-main {
  padding: 56px 44px 40px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.footer-vdivider {
  display: none;
}

.footer-col-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 16px;
}

.footer-col-desc {
  font-size: 0.82rem;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.65);
}

.footer-address {
  font-style: normal;
  font-size: 0.83rem;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.65);
}

.footer-contacts {
  margin-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer-link {
  font-size: 0.83rem;
  color: rgba(255, 255, 255, 0.65);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: color 0.25s ease;
}

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

.footer-link svg {
  flex-shrink: 0;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.footer-bottom-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 24px;
  margin-left: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-copy {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.5);
}

.footer-main > div:nth-child(2) {
  text-align: left;
  padding-left: 64px;
}

.footer-main > div:nth-child(3) {
  text-align: left;
  padding-left: 64px;
}


/* ── WHATSAPP FLOATING ── */
.wa-float {
  position: fixed !important;
  bottom: 28px !important;
  right: 28px !important;
  left: auto !important;
  z-index: 9999;
  width: 56px;
  height: 56px;
  background: #25D366;
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(37, 211, 102, 0.4);
  transition: transform 0.2s, box-shadow 0.2s;
}

.wa-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 24px rgba(37, 211, 102, 0.5);
}


/* ============================================================
   RESPONSIVE — Desktop First (max-width)
   ============================================================ */

/* ── 1280px ── */
@media (max-width: 1280px) {
  .footer-main                 { padding: 56px 32px 40px; }
  .footer-main > div:nth-child(2),
  .footer-main > div:nth-child(3) { padding-left: 40px; }
}

/* ── 1024px ── */
@media (max-width: 1024px) {
  .footer-main                 { padding: 48px 32px 36px; }
  .footer-main > div:nth-child(2),
  .footer-main > div:nth-child(3) { padding-left: 32px; }
}

/* ── 900px ── */
@media (max-width: 900px) {
  /* Navbar mobile */
  .nav-menu {
    display: none;
    position: absolute;
    top: 70px; left: 0; right: 0;
    background: var(--white);
    flex-direction: column;
    align-items: flex-start;
    padding: 12px 24px 20px;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    gap: 0;
    z-index: 998;
  }
  .nav-menu.nav-menu-open      { display: flex; }
  .nav-link                    { padding: 12px 0; font-size: 0.85rem; width: 100%; border-bottom: 1px solid var(--border); }
  .nav-item:last-child .nav-link { border-bottom: none; }
  .nav-item-active .nav-link::after { display: none; }
  .nav-share-label             { display: none; }
  .nav-hamburger               { display: flex; }
  .nav-actions                 { gap: 2px; }

  /* Footer */
  .footer-main                 { grid-template-columns: 1fr; gap: 32px; padding: 40px 32px; }
  .footer-main > div:nth-child(2),
  .footer-main > div:nth-child(3) { text-align: left; padding-left: 0; }
  .footer-main > div:nth-child(2) .footer-contacts,
  .footer-main > div:nth-child(2) .footer-address,
  .footer-main > div:nth-child(3) .footer-contacts,
  .footer-main > div:nth-child(3) .footer-address { text-align: left; }
  .footer-copy                 { margin-left: 0; }
  .footer-bottom-inner         { padding: 16px 32px; margin-left: 0; }
}

/* ── 480px ── */
@media (max-width: 480px) {
  .nav-inner                   { height: 60px; }
  .nav-logo img                { height: 40px; }
  .nav-tagline-main            { font-size: 0.65rem; }
  .footer-main                 { padding: 40px 20px; gap: 24px; }
  .footer-bottom-inner         { padding: 14px 16px; }
  .wa-float                    { width: 48px !important; height: 48px !important; bottom: 20px !important; right: 20px !important; }
}

/* ── 320px ── */
@media (max-width: 320px) {
  .nav-inner                   { height: 60px; }
  .nav-logo img                { height: 36px; }
  .nav-taglines                { display: none; }
  .footer-main                 { padding: 32px 16px; }
  .footer-bottom-inner         { padding: 12px 16px; }
  .wa-float                    { width: 44px !important; height: 44px !important; bottom: 16px !important; right: 16px !important; }
}