/* =========================================================
   NOCTURNAL — INDIGO INTELLIGENCE COLOR SYSTEM
   ========================================================= */

   :root {
    --color-primary: #1E3A8A;
    --color-secondary: #6366F1;
    --color-ink: #0F172A;
    --color-accent: #FBBF24;
  
    --color-slate: #475569;
    --color-fog: #E5E7EB;
    --color-mist: #F1F5F9;
    --color-bg: #FFFFFF;
  
    /* Spacing scale */
    --space-xs: 8px;
    --space-sm: 16px;
    --space-md: 24px;
    --space-lg: 48px;
    --space-xl: 96px;
  
    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
  
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08);
    --shadow-md: 0 4px 6px rgba(15, 23, 42, 0.1);
    --shadow-lg: 0 10px 24px rgba(15, 23, 42, 0.15);
  
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
  }
  
  /* =========================================================
     RESET / BASE
     ========================================================= */
  
  *,
  *::before,
  *::after {
    box-sizing: border-box;
  }
  
  html {
    scroll-behavior: smooth;
  }
  
  body {
    margin: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont,
                 "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--color-bg);
    color: var(--color-ink);
    line-height: 1.6;
  }
  
  /* Accessibility */
  .sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
  }
  
  /* =========================================================
     TYPOGRAPHY
     ========================================================= */
  
  h1, h2, h3, h4 {
    font-weight: 600;
    line-height: 1.25;
    margin: 0 0 0.6em;
    color: var(--color-ink);
  }
  
  h1 {
    font-size: clamp(2.2rem, 4vw, 3rem);
  }
  
  h2 {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
  }
  
  h3 {
    font-size: 1.25rem;
  }
  
  p {
    margin: 0 0 1.25em;
    max-width: 70ch;
    color: var(--color-slate);
  }
  
  a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
  }
  
  a:hover {
    color: var(--color-secondary);
  }
  
  /* =========================================================
     LAYOUT
     ========================================================= */
  
  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
  }
  
  main {
    min-height: 60vh;
  }
  
  /* =========================================================
     SECTIONS
     ========================================================= */
  
  .section {
    padding: var(--space-xl) 0;
  }
  
  .section--compact {
    padding: var(--space-lg) 0;
  }
  
  .border-fog {
    border-top: 1px solid var(--color-fog);
    border-bottom: 1px solid var(--color-fog);
  }
  
  .bg-mist {
    background: var(--color-mist);
  }
  
  /* =========================================================
     HEADER / NAV
     ========================================================= */
  
  .site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.95);
    border-bottom: 1px solid var(--color-fog);
    backdrop-filter: blur(8px);
  }
  
  .site-header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 0;
  }
  
  .site-logo {
    font-weight: 600;
    letter-spacing: 0.02em;
    color: var(--color-ink);
  }
  
  .site-nav ul {
    display: flex;
    gap: 32px;
    list-style: none;
    padding: 0;
    margin: 0;
  }
  
  .site-nav a {
    font-size: 0.9rem;
    color: var(--color-slate);
    opacity: 0.8;
    position: relative;
  }
  
  .site-nav a:hover,
  .site-nav a.active {
    color: var(--color-primary);
    opacity: 1;
  }
  
  .site-nav a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-secondary);
    transition: width var(--transition-base);
  }
  
  .site-nav a:hover::after,
  .site-nav a.active::after {
    width: 100%;
  }
  
  /* =========================================================
     HERO
     ========================================================= */
  
  .hero {
    background: linear-gradient(180deg, var(--color-mist) 0%, var(--color-bg) 100%);
  }
  
  .hero h1 {
    max-width: 800px;
    margin-bottom: 24px;
  }
  
  .hero p {
    max-width: 600px;
    font-size: 1.05rem;
    margin-bottom: 32px;
  }
  
  /* =========================================================
     BUTTONS
     ========================================================= */
  
  .btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    background: var(--color-primary);
    color: #fff;
    font-weight: 500;
    transition: all var(--transition-base);
  }
  
  .btn:hover {
    background: var(--color-ink);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
  }
  
  .btn-ghost {
    background: transparent;
    color: var(--color-primary);
    border: 1px solid var(--color-fog);
  }
  
  .btn-ghost:hover {
    background: var(--color-mist);
    box-shadow: none;
  }
  
  /* =========================================================
     SERVICES GRID
     ========================================================= */
  
  .services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px,1fr));
    gap: 48px;
  }
  
  .service-card {
    padding: 24px;
    border-left: 3px solid var(--color-secondary);
    background: linear-gradient(
      135deg,
      rgba(99,102,241,0.04) 0%,
      transparent 100%
    );
    transition: all var(--transition-base);
  }
  
  .service-card:hover {
    transform: translateX(4px);
    border-left-color: var(--color-primary);
  }
  
  .service-card p {
    margin-bottom: 0.9em;
  }
  
  .service-card:focus-within {
    outline: 2px solid rgba(99,102,241,0.3);
    outline-offset: 2px;
  }
  
  /* =========================================================
     LISTS
     ========================================================= */
  
  ul {
    padding-left: 1.2em;
  }
  
  ul li {
    margin-bottom: 0.5em;
  }
  
  ul li:last-child {
    margin-bottom: 0;
  }
  
  /* =========================================================
     FOOTER
     ========================================================= */
  
  .site-footer {
    margin-top: var(--space-xl);
    border-top: 1px solid var(--color-fog);
    background: var(--color-mist);
  }
  
  .site-footer-inner {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    padding: 32px 0;
    font-size: 0.85rem;
    color: var(--color-slate);
  }
  
  .site-footer-nav {
    display: flex;
    gap: 16px;
  }
  
  /* =========================================================
     FLASH MESSAGES
     ========================================================= */
  
  .alert-flash {
    max-width: 1200px;
    margin: 16px auto;
    padding: 16px 20px;
    border-left: 4px solid;
    border-radius: var(--radius-md);
  }
  
  .alert-flash.success {
    background: rgba(16,185,129,0.1);
    border-color: #10B981;
  }
  
  .alert-flash.error {
    background: rgba(239,68,68,0.1);
    border-color: #EF4444;
  }
  
  /* =========================================================
     RESPONSIVE
     ========================================================= */
  
  @media (max-width: 768px) {
    :root {
      --space-xl: 64px;
      --space-lg: 32px;
    }
  
    .site-nav ul {
      flex-direction: column;
      gap: 16px;
    }
  
    .services-grid {
      gap: 32px;
    }
  }
  
  /* =========================================================
   HERO — PRIMARY
   ========================================================= */

.hero {
  position: relative;
  background:
    linear-gradient(
      rgba(15, 23, 42, 0.75),
      rgba(15, 23, 42, 0.85)
    ),
    url('/images/nocturnal/hero-abstract.png');
  background-size: cover;
  background-position: center;
  color: #fff;
}

.hero h1,
.hero p {
  color: #fff;
}

.hero .btn {
  background: var(--color-accent);
  color: var(--color-ink);
}

.hero .btn:hover {
  background: #f59e0b;
}

.hero .btn-ghost {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.4);
}

.hero .btn-ghost:hover {
  background: rgba(255,255,255,0.1);
  border-color: #fff;
}

/* =========================================================
   CONTACT FORM
   ========================================================= */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-form-wrapper h2 {
  margin-bottom: 24px;
}

.contact-form-card {
  padding: 32px;
  border-left: 3px solid var(--color-secondary);
  background: linear-gradient(
    135deg,
    rgba(99,102,241,0.04) 0%,
    transparent 100%
  );
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--color-ink);
}

.form-group input,
.form-group textarea {
  padding: 12px 16px;
  border: 1px solid var(--color-fog);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 1rem;
  background: #fff;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-secondary);
  box-shadow: 0 0 0 3px rgba(99,102,241,0.15);
}

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

.form-error {
  color: #EF4444;
  font-size: 0.85rem;
  margin-top: 4px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

@media (max-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

/* =========================================================
   SERVICE CARD HEADER
   ========================================================= */

.service-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.service-card-header i {
  font-size: 1.5rem;
  color: var(--color-secondary);
}

.service-card-header h3 {
  margin: 0;
  font-size: 1.1rem;
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
  color: var(--color-primary);
  transition: gap var(--transition-fast);
}

.service-link:hover {
  gap: 10px;
  color: var(--color-secondary);
}

/* =========================================================
   MOBILE MENU
   ========================================================= */

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.mobile-menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-ink);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: flex;
  }

  .site-nav {
    position: fixed;
    top: 65px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--color-fog);
    padding: 24px;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition-base), opacity var(--transition-base), visibility var(--transition-base);
    z-index: 999;
  }

  .site-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .site-nav ul {
    flex-direction: column;
    gap: 16px;
  }

  .site-nav a {
    display: block;
    padding: 8px 0;
  }
}


/* ==========================================================
   Contact Page
   ========================================================== */

   .contact-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 3rem;
    align-items: start;
}

@media (max-width: 992px) {
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
}

/* ------------------------------
   Form Wrapper
------------------------------ */

.contact-form-wrapper h2 {
    margin-bottom: 1.5rem;
}

.contact-form-card {
    background: #ffffff;
    border: 1px solid var(--fog, #e6e9ee);
    border-radius: 12px;
    padding: 2.25rem;
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.04);
}

/* ------------------------------
   Form Layout
------------------------------ */

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.75rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    color: var(--ink, #1b1f24);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.85rem 1rem;
    border: 1px solid var(--fog, #e6e9ee);
    border-radius: 8px;
    font-size: 0.95rem;
    font-family: inherit;
    background: #fff;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

/* Focus state (clean + restrained) */
.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent, #3a6df0);
    box-shadow: 0 0 0 3px rgba(58, 109, 240, 0.12);
}

/* Textarea refinement */
.form-group textarea {
    resize: vertical;
    min-height: 120px;
    line-height: 1.6;
}

/* Error state */
.form-error {
    font-size: 0.8rem;
    color: #c0392b;
}

/* Button alignment */
.contact-form .btn {
    align-self: flex-start;
    margin-top: 0.5rem;
}

/* ------------------------------
   Contact Info Cards
------------------------------ */

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-info .service-card {
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--fog, #e6e9ee);
    background: #ffffff;
    box-shadow: 0 8px 22px rgba(0, 0, 0, 0.03);
}

.contact-info .service-card h3 {
    margin-bottom: 1rem;
}

.contact-info ul {
    margin-top: 1rem;
    padding-left: 1.1rem;
}

.contact-info ul li {
    margin-bottom: 0.6rem;
    font-size: 0.95rem;
}

/* Link refinement */
.contact-info a {
    text-decoration: none;
    font-weight: 500;
}

.contact-info a:hover {
    text-decoration: underline;
}

/* ------------------------------
   Section Polish
------------------------------ */

.section.border-fog {
    border-top: 1px solid var(--fog, #e6e9ee);
    border-bottom: 1px solid var(--fog, #e6e9ee);
}

.bg-mist {
    background: #f7f9fc;
}