/* ============================================
   Aratio — Calculated Growth
   Static Site Stylesheet
   ============================================ */

/* --- Design Tokens --- */
:root {
  /* Brand palette — sophisticated, non-corporate */
  --color-ink:        #1a1a2e;
  --color-charcoal:   #2d2d44;
  --color-slate:      #4a4a68;
  --color-mid:        #7b7b98;
  --color-light:      #c4c4d4;
  --color-off-white:  #f4f3f0;
  --color-white:      #ffffff;
  --color-accent:     #c8965a;   /* warm gold — precision + warmth */
  --color-accent-dim: #a87a45;

  /* Typography */
  --font-heading: 'Inter', 'Segoe UI', system-ui, sans-serif;
  --font-body:    'Inter', 'Segoe UI', system-ui, sans-serif;

  /* Spacing scale */
  --sp-xs:  0.5rem;
  --sp-sm:  1rem;
  --sp-md:  1.5rem;
  --sp-lg:  2.5rem;
  --sp-xl:  4rem;
  --sp-2xl: 6rem;

  /* Widths */
  --max-width: 1140px;
  --max-text:  680px;
}


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

html {
  font-size: 100%;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-charcoal);
  background: var(--color-white);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--color-accent-dim);
  text-decoration: none;
  transition: color 0.2s ease;
}
a:hover, a:focus {
  color: var(--color-accent);
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--color-ink);
  line-height: 1.25;
  font-weight: 600;
}

h1 { font-size: clamp(2rem, 5vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.25rem); }
h3 { font-size: 1.25rem; }

p + p { margin-top: var(--sp-sm); }


/* --- Utility --- */
.container {
  width: 90%;
  max-width: var(--max-width);
  margin: 0 auto;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.text-center { text-align: center; }
.text-accent { color: var(--color-accent); }


/* --- Header / Nav --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-light);
  padding: var(--sp-sm) 0;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-ink);
  letter-spacing: -0.02em;
}

.logo span {
  color: var(--color-accent);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--sp-xs);
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-ink);
  margin: 5px 0;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.main-nav ul {
  display: flex;
  gap: var(--sp-md);
  list-style: none;
}

.main-nav a {
  color: var(--color-charcoal);
  font-size: 0.95rem;
  font-weight: 500;
  padding: var(--sp-xs) 0;
  position: relative;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width 0.3s ease;
}

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

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


/* --- Hero --- */
.hero {
  padding: var(--sp-2xl) 0;
  background: var(--color-off-white);
}

.hero-inner {
  max-width: var(--max-text);
}

.hero h1 {
  margin-bottom: var(--sp-md);
}

.hero p {
  font-size: 1.15rem;
  color: var(--color-slate);
  margin-bottom: var(--sp-lg);
}

.hero .tagline {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--sp-sm);
}


/* --- Buttons --- */
.btn {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.15s ease;
  border: none;
}

.btn:hover {
  transform: translateY(-1px);
}

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

.btn-primary:hover {
  background: var(--color-accent-dim);
  color: var(--color-white);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--color-accent);
  color: var(--color-accent-dim);
}

.btn-outline:hover {
  background: var(--color-accent);
  color: var(--color-white);
}


/* --- Sections --- */
.section {
  padding: var(--sp-2xl) 0;
}

.section-alt {
  background: var(--color-off-white);
}

.section-header {
  max-width: var(--max-text);
  margin-bottom: var(--sp-xl);
}

.section-header p {
  color: var(--color-slate);
  margin-top: var(--sp-sm);
  font-size: 1.05rem;
}

.section-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--sp-xs);
}


/* --- Card Grid --- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--sp-lg);
}

.card {
  background: var(--color-white);
  border: 1px solid var(--color-light);
  border-radius: 8px;
  padding: var(--sp-lg);
  transition: box-shadow 0.3s ease, transform 0.2s ease;
}

.card:hover {
  box-shadow: 0 8px 30px rgba(26, 26, 46, 0.08);
  transform: translateY(-2px);
}

.card-icon {
  width: 48px;
  height: 48px;
  background: var(--color-off-white);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--sp-md);
  color: var(--color-accent);
  font-size: 1.5rem;
}

.card h3 {
  margin-bottom: var(--sp-sm);
}

.card p {
  color: var(--color-slate);
  font-size: 0.95rem;
}


/* --- Pillars (Home) --- */
.pillars {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--sp-md);
  margin-top: var(--sp-lg);
}

.pillar {
  text-align: center;
  padding: var(--sp-lg) var(--sp-md);
}

.pillar-number {
  display: inline-block;
  width: 40px;
  height: 40px;
  line-height: 40px;
  border-radius: 50%;
  background: var(--color-accent);
  color: var(--color-white);
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: var(--sp-sm);
}

.pillar h3 {
  margin-bottom: var(--sp-xs);
}

.pillar p {
  color: var(--color-slate);
  font-size: 0.9rem;
}


/* --- CTA Banner --- */
.cta-banner {
  padding: var(--sp-xl) 0;
  background: var(--color-ink);
  color: var(--color-off-white);
  text-align: center;
}

.cta-banner h2 {
  color: var(--color-white);
  margin-bottom: var(--sp-sm);
}

.cta-banner p {
  color: var(--color-light);
  max-width: var(--max-text);
  margin: 0 auto var(--sp-lg);
}


/* --- About page --- */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-xl);
  align-items: center;
}

.about-img {
  border-radius: 8px;
  overflow: hidden;
  aspect-ratio: 4 / 3;
}

.about-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--sp-md);
}

.value-item {
  padding: var(--sp-md);
  border-left: 3px solid var(--color-accent);
}

.value-item h3 {
  margin-bottom: var(--sp-xs);
  font-size: 1.1rem;
}

.value-item p {
  color: var(--color-slate);
  font-size: 0.9rem;
}


/* --- Contact --- */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-xl);
}

.contact-info h3 {
  margin-bottom: var(--sp-sm);
}

.contact-info p {
  color: var(--color-slate);
  margin-bottom: var(--sp-md);
}

.contact-detail {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-sm);
  margin-bottom: var(--sp-md);
}

.contact-detail-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  background: var(--color-off-white);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  font-size: 1.1rem;
}

.contact-form {
  background: var(--color-off-white);
  padding: var(--sp-lg);
  border-radius: 8px;
}

.form-group {
  margin-bottom: var(--sp-md);
}

.form-group label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-ink);
  margin-bottom: var(--sp-xs);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-light);
  border-radius: 4px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-charcoal);
  background: var(--color-white);
  transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(200, 150, 90, 0.15);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-status {
  margin-top: var(--sp-sm);
  padding: 0;
  font-size: 0.95rem;
  border-radius: 4px;
  text-align: center;
  transition: all 0.3s ease;
}

.form-status--success {
  padding: 0.75rem 1rem;
  background: #e8f5e9;
  color: #2e7d32;
  border: 1px solid #a5d6a7;
}

.form-status--error {
  padding: 0.75rem 1rem;
  background: #fbe9e7;
  color: #c62828;
  border: 1px solid #ef9a9a;
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}


/* --- Footer --- */
.site-footer {
  background: var(--color-ink);
  color: var(--color-light);
  padding: var(--sp-xl) 0 var(--sp-md);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--sp-lg);
  margin-bottom: var(--sp-lg);
}

.footer-brand .logo {
  color: var(--color-white);
  margin-bottom: var(--sp-sm);
  display: inline-block;
}

.footer-brand p {
  color: var(--color-mid);
  font-size: 0.9rem;
  max-width: 320px;
}

.site-footer h4 {
  color: var(--color-white);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--sp-sm);
}

.site-footer ul {
  list-style: none;
}

.site-footer li + li {
  margin-top: var(--sp-xs);
}

.site-footer a {
  color: var(--color-mid);
  font-size: 0.9rem;
}

.site-footer a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  border-top: 1px solid var(--color-charcoal);
  padding-top: var(--sp-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--color-mid);
}


/* --- Mobile --- */
@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-light);
    padding: var(--sp-sm) 0;
  }

  .main-nav.is-open {
    display: block;
  }

  .main-nav ul {
    flex-direction: column;
    padding: 0 5%;
    gap: 0;
  }

  .main-nav li {
    border-bottom: 1px solid var(--color-off-white);
  }

  .main-nav a {
    display: block;
    padding: var(--sp-sm) 0;
  }

  .about-intro {
    grid-template-columns: 1fr;
  }

  .contact-layout {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }
}