:root {
  --brown: #6B3D25;
  --tan: #C4956A;
  --cream: #E8D0B8;
  --ivory: #FFF2E5;
  --muted: #6c6c6c;

  --radius: 24px;
  --shadow: 0 10px 30px rgba(107, 61, 37, 0.08);
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  width: 100%;
  overflow-x: hidden;
  font-family: 'Poppins', sans-serif;
  background: var(--ivory);
  color: #2b2b2b;
  line-height: 1.6;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.container,
.container-fluid {
  width: 100%;
  overflow: hidden;
}

.row {
  margin-left: 0;
  margin-right: 0;
}

section {
  position: relative;
  overflow: hidden;
}

/* ================= NAVBAR ================= */
.navbar {
  background: transparent;
  padding: 1rem 0;
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(255, 242, 229, 0.92);
  backdrop-filter: blur(6px);
  box-shadow: var(--shadow);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand-logo {
  width: 54px;
  height: 54px;
  object-fit: contain;
  transition: var(--transition);
  /* default: render logo as white for dark hero/header backgrounds */
  filter: brightness(0) invert(1);
}

.brand-logo:hover {
  transform: scale(1.03);
}

.navbar-collapse {
  flex-grow: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
}

.nav-link {
  color: #fff;
  font-weight: 500;
  transition: var(--transition);
}

@media (min-width: 992px) {
  .nav-center-list {
    display: flex;
    align-items: center;
    gap: 1.8rem;
  }

  .nav-center-list .nav-link {
    padding: 0.25rem 0;
    position: relative;
  }

  .nav-center-list .nav-link:hover {
    opacity: 1;
    color: var(--tan);
    transform: translateY(-1px);
  }

  .navbar.scrolled .nav-center-list .nav-link:hover {
    color: var(--brown);
  }
}

.nav-link:hover {
  opacity: 0.85;
}

.navbar.scrolled .nav-link {
  color: #2b2b2b;
}

/* When navbar has scrolled state (light background), show original logo colors */
.navbar.scrolled .brand-logo {
  filter: none;
}

.navbar-toggler-icon {
  filter: invert(1);
}

/* ================= HERO ================= */
.hero {
  min-height: 100vh;
  padding-top: 6rem;
  display: flex;
  align-items: center;
  position: relative;
}

.hero-bg-image {
  position: absolute;
  inset: 0;
  background: url('../img/hero.png') center/cover no-repeat;
  z-index: -2;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  z-index: -1;
}

.hero-content-card {
  width: 100%;
  max-width: 1120px;
  padding: 3rem 2rem;
  border-radius: 30px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(4px);
  box-shadow: var(--shadow);
}

.hero-title {
  font-family: 'Montserrat', sans-serif;
  color: #fff;
  font-weight: 700;
  font-size: clamp(2rem, 5vw, 4.5rem);
}

.hero-lead {
  color: rgba(255, 255, 255, 0.88);
  max-width: 760px;
}

.hero-kicker {
  color: var(--cream);
  letter-spacing: 0.2em;
  font-size: 0.8rem;
  text-transform: uppercase;
}

/* ================= BUTTONS ================= */
.btn {
  transition: var(--transition);
  border-radius: 12px;
}

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

.btn-primary {
  background: var(--brown);
  border-color: var(--brown);
  box-shadow: 0 8px 20px rgba(107, 61, 37, 0.15);
}

.btn-primary:hover {
  background: var(--tan);
  border-color: var(--tan);
}

.btn-hero-outline {
  color: #fff;
  border: 1px solid rgba(255,255,255,0.6);
  background: rgba(255,255,255,0.08);
}

.btn-hero-outline:hover {
  background: #fff;
  color: var(--brown);
}

/* ================= SECTIONS ================= */
.py-6 {
  padding: 4.5rem 0;
}

.section-title {
  font-family: 'Montserrat', sans-serif;
  color: var(--brown);
  font-size: 1.8rem;
  font-weight: 700;
}

.section-lead {
  color: rgba(43,43,43,0.75);
}

.section-kicker {
  color: var(--tan);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.8rem;
}

.section-about,
.section-download,
.section-contact {
  background: linear-gradient(180deg, #FFF2E5 0%, #F6E3D1 100%);
}

/* ================= CARDS ================= */
.about-card,
.about-side-card,
.contact-panel,
.download-visual-wrap,
.contact-form {
  width: 100%;
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow);
}

.about-card:hover,
.about-side-card:hover,
.contact-panel:hover,
.download-visual-wrap:hover {
  transform: translateY(-4px);
}

.about-side-card {
  padding: 2rem;
  background: #fff;
}

.about-side-title {
  font-family: 'Montserrat', sans-serif;
  color: var(--brown);
  margin-bottom: 1rem;
}

.about-side-copy {
  color: rgba(43,43,43,0.75);
}

/* ================= MOCKUP GRID ================= */
.about-mockup-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.about-mockup-card {
  background: #fff;
  border-radius: 20px;
  padding: 0.5rem;
  overflow: hidden;
}

.about-mockup-img {
  width: 100%;
  height: 240px;
  object-fit: contain;
  border-radius: 14px;
}

/* ================= DOWNLOAD SECTION ================= */
.download-title {
  font-family: 'Montserrat', sans-serif;
  font-size: 2rem;
  color: var(--brown);
}

.download-points {
  display: grid;
  gap: 1rem;
}

.download-point {
  display: flex;
  gap: 1rem;
  background: #fff;
  padding: 1rem;
  border-radius: 18px;
  box-shadow: var(--shadow);
}

.download-visual-wrap {
  display: flex;
  gap: 1rem;
  padding: 1rem;
  background: linear-gradient(135deg, rgba(107,61,37,0.08), rgba(232,208,184,0.2));
}

.download-visual-img {
  flex: 1;
  border-radius: 20px;
  object-fit: contain;
}

/* ================= CONTACT ================= */
.contact-shell {
  border-radius: 30px;
  overflow: hidden;
  background: rgba(255,255,255,0.8);
}

.contact-panel {
  padding: 2rem;
}

.contact-form .form-control {
  border-radius: 14px;
  padding: 0.9rem 1rem;
  border: 1px solid rgba(107,61,37,0.12);
}

.contact-form .form-control:focus {
  border-color: var(--brown);
  box-shadow: 0 0 0 0.2rem rgba(107,61,37,0.08);
}

/* ================= FOOTER ================= */
.site-footer {
  background: linear-gradient(180deg, rgba(107,61,37,0.04), rgba(232,208,184,0.12));
  border-top: 1px solid rgba(107,61,37,0.08);
}

.footer-center {
  text-align: center;
}

.footer-center a {
  color: var(--brown);
  text-decoration: none;
  font-weight: 600;
}

.footer-center a:hover {
  text-decoration: underline;
}

/* ================= ANIMATIONS ================= */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.7s ease;
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ================= RESPONSIVE ================= */
@media (max-width: 991px) {

  .hero {
    padding-top: 5rem;
    min-height: auto;
  }

  .hero-content-card {
    padding: 2rem 1.2rem;
  }

  .navbar .container {
    flex-wrap: wrap;
  }

  .navbar-collapse {
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    padding: 0.9rem 1rem;
    border-radius: 14px;
    background: rgba(17,17,17,0.85);
  }

  .nav-center-list {
    width: 100%;
    gap: 0.25rem;
    align-items: stretch !important;
  }

  .nav-center-list .nav-item {
    width: 100%;
  }

  .nav-center-list .nav-link {
    display: block;
    width: 100%;
    padding: 0.7rem 0;
    text-align: left;
  }

  .navbar.scrolled .navbar-collapse {
    background: rgba(255,242,229,0.96);
  }

  .about-mockup-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .download-hero-shell {
    padding: 1.2rem;
  }

  .download-visual-wrap {
    flex-direction: column;
    gap: 0.75rem;
    padding: 0.85rem;
  }

  .download-visual-img {
    width: 100%;
    max-width: 100%;
    height: 180px;
    object-fit: contain;
    background: #f7efe6;
    border-radius: 16px;
  }

  .download-visual-img-main,
  .download-visual-img-secondary {
    width: 100%;
    left: auto;
    right: auto;
    top: auto;
    bottom: auto;
  }

}

@media (max-width: 768px) {

  .hero-title {
    font-size: 2rem;
  }

  .about-mockup-grid {
    gap: 0.75rem;
  }

  .about-mockup-card {
    padding: 0.4rem;
  }

  .about-mockup-img {
    height: 165px;
  }

  .download-title {
    font-size: 1.6rem;
  }

  .contact-panel {
    padding: 1.5rem;
  }

}

@media (max-width: 576px) {

  .hero {
    padding-top: 5.5rem;
  }

  .hero-content-card {
    border-radius: 20px;
  }

  .brand-logo {
    width: 46px;
    height: 46px;
  }

  .section-title {
    font-size: 1.5rem;
  }

  .about-mockup-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .about-mockup-img {
    height: 150px;
  }

  .download-hero-shell {
    padding: 1rem;
  }

  .download-visual-img {
    height: 160px;
  }

  .download-point {
    flex-direction: column;
  }

}