/* === GLOBAL VARIABLES === */
:root {
  --brand-bg: #8A9C91;
  --brand-fg: #D7E6DD;
  --accent: #639372;
  --font-heading: 'Playfair Display', serif;
  --font-body: 'Montserrat', sans-serif;
  --bg-color: #fff;
  --text-color: #333;

  /* Flip card helpers */
  --card-radius: 6px;
  --card-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

html[data-theme="dark"] {
  --brand-bg: #2e3b37;
  --brand-fg: #d7e6dd;
  --accent: #9fc8aa;
  --bg-color: #121212;
  --text-color: #e0e0e0;
}

/* === RESET & LAYOUT === */
html { box-sizing: border-box; }
*, *::before, *::after { box-sizing: inherit; }
html, body { height: 100%; margin: 0; }

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  font-family: var(--font-body);
  background: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
}

a { text-decoration: none; color: inherit; }

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

/* === UTILITY === */
section, .build-process, .contact { padding: 4rem 0; }

/* === CONTAINER === */
.container {
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
  padding: 0 0.25rem;  /* tiny gutter */
}

/* === HEADER === */
header {
  background: var(--brand-bg); padding: 0.5rem 0;
  position: sticky; top: 0; z-index: 1000;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.logo img { height: 90px; width: auto; }

/* NAV */
.main-nav { display: flex; align-items: center; }
.main-nav .nav-links {
  display: flex; align-items: center; gap: 0.5rem; list-style: none; margin: 0; padding: 0;
}
.nav-links a {
  padding: 0.5rem 0.75rem; font-weight: 500; color: var(--brand-fg);
  transition: color 0.3s, background 0.3s; border-radius: 4px;
}
.nav-links a:hover,
.nav-links a[aria-current="page"] { color: #fff; background: rgba(0,0,0,0.1); }

/* Mobile nav toggle */
.nav-toggle {
  display: none; position: relative; border: 0; background: transparent;
  width: 44px; height: 44px; cursor: pointer;
}
.nav-toggle .nav-toggle-icon {
  font-size: 22px;
  color: var(--brand-fg);
  line-height: 1;
  pointer-events: none; /* keep clicks on the button */
}

/* === HERO === */
.hero {
  position: relative;
  min-height: 80vh;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero video {
  position: absolute;
  top: 50%;
  left: 50%;
  min-width: 100%;
  min-height: 100%;
  transform: translate(-50%, -50%);
  object-fit: cover;
  z-index: 0;
}
.hero .hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
  padding: 2rem;
  color: var(--brand-fg);
  background: rgba(0, 0, 0, 0.3);
  border-radius: 6px;
}
.hero h1 { font-size: clamp(2rem, 6vw, 3rem); }
.hero p  { font-size: clamp(1rem, 3vw, 1.5rem); margin-bottom: 1rem; }

/* === BUTTON === */
.btn {
  display: inline-block;
  font-family: var(--font-body);
  background: var(--brand-fg);
  color: var(--brand-bg);
  padding: 0.75rem 1.5rem;
  border-radius: 4px;
  font-weight: 500;
  transition: background 0.3s, color 0.3s;
  cursor: pointer;
  border: none;
}
.btn:hover { background: var(--accent); color: #fff; }
.btn:focus { outline: 2px solid var(--accent); outline-offset: 2px; }

/* === BUILD PROCESS (BASE) === */
.build-process { background: #f4f7f6; text-align: center; }

.process-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}
@media (max-width: 1024px) {
  .process-grid { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
}

/* === BUILD PROCESS — borderless flip cards === */

/* Card container */
.process-step {
  background: transparent;
  width: 100%;
  aspect-ratio: 1 / 1;        /* square tiles */
  perspective: 1000px;        /* 3D effect */
  cursor: pointer;
  outline: none;
}

/* 3D inner */
.card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  text-align: center;
  transition: transform 0.8s;
  transform-style: preserve-3d;
  border-radius: var(--card-radius);
}

/* Flip on hover (tap can toggle .is-flipped in JS if you add it) */
.process-step:hover .card-inner,
.process-step.is-flipped .card-inner { transform: rotateY(180deg); }

/* Remove borders/frames/shadows */
.process-step, .card-inner, .card-front, .card-back {
  border: 0 !important;
  box-shadow: none !important;
}

/* Faces */
.card-front, .card-back {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  border-radius: var(--card-radius);
}

/* Front (clean tile) */
.card-front {
  background: #f9f9f9;   /* change to transparent if you want */
  color: #000;
  padding: 20px;
}

/* Back (photo full-bleed) */
.card-back {
  transform: rotateY(180deg);
  overflow: hidden;       /* clips image to rounded corners */
  padding: 0;             /* removes inner frame */
  background: #000;       /* avoids flash while image loads */
}

.card-back > img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;      /* fill without stretching */
  border-radius: var(--card-radius);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .card-inner { transition: none; }
}

/* === ABOUT === */
.about {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  align-items: flex-start;
}
.about-text { flex: 1; }
.about-text p { font-size: 1.1rem; }
.about-img { flex: 1; max-width: 500px; border-radius: 8px; overflow: hidden; }
.about-img img { width: 60%; border-radius: 8px; }

/* === SERVICES === */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}
.service-card {
  background: #f9f9f9;
  border: 1px solid #ddd;
  border-top: 4px solid var(--brand-bg);
  border-radius: 6px;
  padding: 1.5rem;
  transition: transform 0.3s;
}
.service-card:hover { transform: translateY(-5px); }
.service-card h3 {
  font-family: var(--font-heading);
  color: var(--brand-bg);
  margin-bottom: 0.5rem;
}

/* === GALLERY === */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

/* === TESTIMONIALS === */
.testimonials .testimonial-card {
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 6px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

/* === PARTNERS === */
.logo-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  justify-content: center;
  align-items: center;
}
.logo-item {
  width: 90px;
  height: 45px;
  display: flex;
  justify-content: center;
  align-items: center;
}
.logo-item img {
  width: 90%;
  height: 90%;
  object-fit: contain;
  opacity: 0.9;
  transition: opacity 0.3s, transform 0.3s;
}
.logo-item img:hover { opacity: 1; transform: scale(1.05); }

/* === CONTACT === */
.contact .container {
    max-width: 800px;
}

.contact form {
    display: grid;
    gap: 1rem;
    background: #fff;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
    border: 1px solid rgba(0,0,0,0.08);
}

.contact form input[type="text"],
.contact form input[type="email"],
.contact form input[type="tel"],
.contact form select,
.contact form textarea {
    width: 100%;
    padding: 12px 15px;
    margin: 0;
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--text-color);
    background-color: #f7f8f7;
    border: 1px solid #ddd;
    border-radius: 8px;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.contact form select {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23666' viewBox='0 0 16 16'%3E%3Cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 15px center;
    background-size: 16px;
}

.contact form input:focus,
.contact form select:focus,
.contact form textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(99, 147, 114, 0.2);
}

.contact form ::placeholder {
    color: #999;
    opacity: 1;
}

.contact form textarea {
    min-height: 150px;
    resize: vertical;
}

.contact form .btn {
    width: 100%;
    margin: 0;
    background-color: var(--brand-bg);
    color: #fff;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    padding: 12px 20px;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.contact form .btn:hover,
.contact form .btn:focus {
    background-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.15);
}

/* === MEMBER === */
.member-logos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 20px;
  padding: 20px;
  justify-items: center;
  align-items: center;
  max-width: 100%;
  margin: 0 auto;
}
.member-logos-grid img { width: 140px; height: auto; display: block; }

/* === FOOTER === */
footer {
  background: var(--brand-bg);
  color: var(--brand-fg);
  text-align: center;
  font-size: 0.9rem;
  padding: 1.5rem 1rem;
  margin-top: auto;
}
footer a { color: var(--brand-fg); text-decoration: underline; }

/* === LARGE SCREEN OVERRIDES === */
@media (min-width: 1025px) {
  header .header-inner,
  .build-process.container,
  .testimonials {
    max-width: none;
    padding: 0.5rem;
  }
  .process-grid {
    grid-template-columns: repeat(7, 1fr);
    margin: 0;
    width: 100%;
  }
}

/* === RESPONSIVE ADJUSTMENTS === */
@media (max-width: 900px) {
  /* Show hamburger, hide menu by default */
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .main-nav { display: none; width: 100%; }

  /* When the toggle is expanded, reveal the nav */
  .nav-toggle[aria-expanded="true"] + .main-nav {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    background: var(--brand-bg);
    padding: 0.5rem;
    border-radius: 6px;
  }

  .nav-links { flex-direction: column; align-items: stretch; }
  .nav-links a { display: block; }

  .about { flex-direction: column; text-align: center; }
  .about-img { display: flex; justify-content: center; }
  .about-text { padding: 1rem; }

  .member-logos-grid {
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 16px;
  }

  .btn { width: 100%; text-align: center; }
  .logo img { height: 120px; }

  .process-card .card-inner { min-height: 220px; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .process-card .card-inner { transition: none; }
}