/* ==========================================================================
   Maria Silva — Dark & Premium theme.
   Palette + type driven by design-system/MASTER.md (Applied Palette section).
   ========================================================================== */

:root {
  /* --- Theme tokens (from design-system/MASTER.md) --- */
  --bg: #0d0a12;
  --bg-alt: #14101c;
  --surface: rgba(255, 255, 255, 0.045);
  --surface-strong: rgba(255, 255, 255, 0.07);
  --text: #f5f1ea;
  --text-muted: #b7afc4;
  --accent: #7c3aed;              /* deep violet — client favorite color */
  --accent-2: #a78bfa;
  --warm-white: #f5f1ea;          /* warm white — client favorite color */
  --accent-text: #c4b5fd;         /* lighter tint for AA text contrast on --bg */
  --accent-contrast: #ffffff;
  --border: rgba(255, 255, 255, 0.09);

  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Outfit', system-ui, sans-serif;

  --radius: 16px;
  --maxw: 1080px;
  --space: clamp(3rem, 8vw, 6rem);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --glass-blur: blur(18px) saturate(140%);
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  font-weight: 300;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  position: relative;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; }

/* --- Ambient glow (behind hero) + fine grain (whole page) --- */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 60% 45% at 18% -8%, rgba(124, 58, 237, 0.32), transparent 60%),
    radial-gradient(ellipse 50% 40% at 92% 8%, rgba(245, 241, 234, 0.08), transparent 60%),
    radial-gradient(ellipse 55% 35% at 50% 100%, rgba(124, 58, 237, 0.14), transparent 60%);
}
body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.05;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
.site-header, main, .site-footer { position: relative; z-index: 1; }

/* --- Accessibility --- */
.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--text); color: var(--bg); padding: .6rem 1rem; z-index: 100;
}
.skip-link:focus { left: 0; }
:focus-visible { outline: 2px solid var(--accent-2); outline-offset: 3px; }

/* --- Layout --- */
.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: 1.25rem; }
.section { padding-block: var(--space); }

/* --- Type --- */
h1, h2, h3 { font-family: var(--font-display); line-height: 1.1; font-weight: 600; letter-spacing: -0.01em; }
.eyebrow {
  text-transform: uppercase; letter-spacing: .16em; font-size: .78rem;
  color: var(--accent-text); margin-bottom: .75rem; font-weight: 500;
}
.section__title { font-size: clamp(1.7rem, 4vw, 2.5rem); margin-bottom: 1.5rem; color: var(--text); }
.prose { color: var(--text-muted); max-width: 60ch; font-size: 1.05rem; }

/* --- Nav --- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(13, 10, 18, 0.72);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--border);
}
.nav { display: flex; align-items: center; justify-content: space-between; padding-block: 1rem; }
.nav__brand { font-family: var(--font-display); font-weight: 600; text-decoration: none; font-size: 1.1rem; color: var(--text); }
.nav__menu { list-style: none; display: flex; gap: 1.5rem; align-items: center; padding: 0; }
.nav__menu a { text-decoration: none; color: var(--text-muted); transition: color .2s var(--ease); }
.nav__menu a:hover { color: var(--text); }
.nav__cta {
  color: var(--accent-contrast) !important; font-weight: 600;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  padding: .5rem 1.1rem; border-radius: 999px;
}
.nav__cta:hover { color: var(--accent-contrast) !important; }
.nav__toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: .4rem; }
.nav__toggle span { width: 24px; height: 2px; background: var(--text); display: block; }

/* --- Buttons --- */
.btn {
  display: inline-block; text-decoration: none; padding: .85rem 1.6rem; border-radius: 999px;
  font-weight: 600; cursor: pointer;
  transition: transform .2s var(--ease), box-shadow .2s var(--ease), opacity .2s var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn--primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: var(--accent-contrast);
  box-shadow: 0 8px 30px -8px rgba(124, 58, 237, 0.6);
}
.btn--primary:hover { box-shadow: 0 12px 36px -6px rgba(124, 58, 237, 0.75); }
.btn--ghost {
  border: 1px solid var(--border); color: var(--text);
  background: var(--surface);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}
.btn--ghost:hover { border-color: var(--accent-2); }

/* --- Hero --- */
.hero { display: grid; gap: 2.5rem; padding-block: clamp(3rem, 10vw, 7rem); align-items: center; }
.hero__headline { font-size: clamp(2.3rem, 6vw, 3.8rem); margin-bottom: 1.1rem; }
.hero__sub { color: var(--text-muted); font-size: 1.15rem; max-width: 48ch; margin-bottom: 2rem; }
.hero__actions { display: flex; gap: 1rem; flex-wrap: wrap; }

/* --- Image slots (premium placeholders) --- */
.media-slot {
  position: relative; border-radius: var(--radius); overflow: hidden;
  background:
    linear-gradient(145deg, rgba(124, 58, 237, 0.35), rgba(245, 241, 234, 0.08)),
    var(--surface);
  display: grid; place-items: center; color: var(--accent-text);
  border: 1px solid var(--border);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: 0 20px 50px -20px rgba(0, 0, 0, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.08);
}
.media-slot::after {
  content: attr(data-initials); font-family: var(--font-display); font-size: 2.2rem; font-weight: 600;
  opacity: .8; letter-spacing: .04em;
}
.media-slot--portrait { aspect-ratio: 4 / 5; }
.media-slot--project { aspect-ratio: 16 / 10; }

/* --- Cards grid (glassmorphism) --- */
.grid { list-style: none; padding: 0; display: grid; gap: 1.1rem; }
.grid--cards { grid-template-columns: 1fr; }
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: 0 8px 30px -12px rgba(0, 0, 0, 0.5);
  transition: transform .25s var(--ease), border-color .25s var(--ease), background .25s var(--ease);
}
.card:hover { transform: translateY(-3px); border-color: var(--accent-2); background: var(--surface-strong); }
.card__title { font-size: 1.2rem; margin-bottom: .6rem; color: var(--text); }
.card__body { color: var(--text-muted); }

/* --- Work --- */
.work { display: grid; gap: 2.5rem; }
.project { display: grid; gap: 1.25rem; }
.project__title { color: var(--text); margin-bottom: .35rem; }
.project__what { color: var(--text-muted); margin-bottom: .6rem; }
.project__result { color: var(--accent-text); }

/* --- Process --- */
.steps { list-style: none; padding: 0; display: grid; gap: 1.75rem; counter-reset: step; }
.step { display: grid; gap: .3rem; padding-left: 3.5rem; position: relative; }
.step__n {
  position: absolute; left: 0; top: -.1rem; font-family: var(--font-display); font-size: 1.6rem; font-weight: 600;
  background: linear-gradient(135deg, var(--accent-2), var(--warm-white));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.step__title { color: var(--text); }
.step p { color: var(--text-muted); }

/* --- Testimonials --- */
.quote {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.75rem;
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}
.quote p { margin-bottom: 1rem; font-size: 1.1rem; color: var(--text); }
.quote cite { color: var(--text-muted); font-style: normal; font-weight: 600; }

/* --- FAQ --- */
.faq { display: grid; gap: .6rem; max-width: 70ch; }
.faq details {
  border: 1px solid var(--border); border-radius: var(--radius); padding: 1.1rem 1.4rem;
  background: var(--surface);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}
.faq summary { cursor: pointer; font-weight: 600; color: var(--text); }
.faq details p { color: var(--text-muted); margin-top: .85rem; }

/* --- Contact --- */
.contact .social { list-style: none; padding: 0; display: flex; gap: 1.25rem; margin-top: 1.75rem; flex-wrap: wrap; }
.contact .social a {
  color: var(--text-muted); text-decoration: none; border-bottom: 1px solid var(--border);
  padding-bottom: 2px; transition: color .2s var(--ease), border-color .2s var(--ease); cursor: pointer;
}
.contact .social a:hover { color: var(--accent-text); border-color: var(--accent-2); }
.contact .btn { margin-top: .5rem; }

/* --- Footer --- */
.site-footer { padding-block: 2.5rem; color: var(--text-muted); border-top: 1px solid var(--border); margin-top: var(--space); background: var(--bg-alt); }

/* --- Reveal on scroll (progressive; base state visible if JS/motion off) --- */
[data-reveal] { opacity: 1; }
.js [data-reveal] { opacity: 0; transform: translateY(16px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.js [data-reveal].is-visible { opacity: 1; transform: none; }

/* Clickable affordance across interactive elements */
.btn, .nav__toggle, .faq summary, .contact .social a { cursor: pointer; }

/* ========================= Responsive ========================= */
@media (min-width: 720px) {
  .grid--cards { grid-template-columns: repeat(2, 1fr); }
  .hero { grid-template-columns: 1.2fr .8fr; }
  .project { grid-template-columns: 1fr 1fr; align-items: center; }
}
@media (min-width: 1024px) {
  .grid--cards { grid-template-columns: repeat(3, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
}

/* Mobile nav */
@media (max-width: 719px) {
  .nav__toggle { display: flex; }
  .nav__menu {
    position: absolute; inset: 64px 0 auto 0; flex-direction: column; gap: 0; align-items: flex-start;
    background: rgba(13, 10, 18, 0.96); border-bottom: 1px solid var(--border); padding: 1rem 1.25rem;
    display: none;
  }
  .nav__menu.is-open { display: flex; }
  .nav__menu li { padding: .6rem 0; }
}

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js [data-reveal] { opacity: 1; transform: none; transition: none; }
  .btn:hover, .card:hover { transform: none; }
}