/* ============================================================
   ELLEN TUCKETT — Director of AI Search
   Design: Dark sophisticated tech-professional palette
   Fonts: Instrument Serif (display) + Satoshi (body)
   ============================================================ */

/* Google Fonts + Fontshare */
@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&display=swap');

/* Design tokens */
:root {
  /* Type scale */
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);
  --text-hero: clamp(3rem,     0.5rem  + 7vw,    8rem);

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Dark palette — deep purple-black with electric violet accent */
  --color-bg:              #0a0812;
  --color-surface:         #110e1c;
  --color-surface-2:       #171324;
  --color-surface-offset:  #1d182e;
  --color-divider:         #2a2340;
  --color-border:          #362e52;

  --color-text:            #ede9f8;
  --color-text-muted:      #9b93b8;
  --color-text-faint:      #4e4668;
  --color-text-inverse:    #0a0812;

  /* Electric violet accent */
  --color-primary:         #a78bfa;
  --color-primary-hover:   #c4b5fd;
  --color-primary-active:  #ddd6fe;
  --color-primary-dim:     rgba(167, 139, 250, 0.12);
  --color-primary-border:  rgba(167, 139, 250, 0.25);

  /* Utility */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  --transition-interactive: 200ms cubic-bezier(0.16, 1, 0.3, 1);

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.5);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.6);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.7);
  --shadow-glow: 0 0 40px rgba(167, 139, 250, 0.2);

  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;

  --font-display: Georgia, 'Palatino Linotype', Palatino, serif;
  --font-body: 'Satoshi', 'Inter', -apple-system, sans-serif;
}

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

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-16);
}

body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
}

img, picture, video, canvas, svg { display: block; max-width: 100%; height: auto; }
ul[role="list"], ol[role="list"] { list-style: none; }
input, button, textarea, select { font: inherit; color: inherit; }
h1, h2, h3, h4, h5, h6 { text-wrap: balance; line-height: 1.15; }
p, li, figcaption { text-wrap: pretty; max-width: 72ch; }
button { cursor: pointer; background: none; border: none; }

::selection {
  background: rgba(167, 139, 250, 0.2);
  color: var(--color-text);
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

a, button, [role="button"] {
  transition: color var(--transition-interactive),
              background var(--transition-interactive),
              border-color var(--transition-interactive),
              box-shadow var(--transition-interactive),
              opacity var(--transition-interactive);
}

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

/* ============================================================
   SATOSHI FONT (inline @font-face via CDN simulation)
   Using CSS import approach
   ============================================================ */

/* ============================================================
   LAYOUT UTILITIES
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-6), 5vw, var(--space-16));
}

.container--narrow {
  max-width: var(--content-default);
}

section {
  padding-block: clamp(var(--space-16), 8vw, var(--space-32));
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(13, 17, 23, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-divider);
  transition: box-shadow var(--transition-interactive);
}

.site-header--scrolled {
  box-shadow: var(--shadow-md);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
}

.nav-logo svg {
  flex-shrink: 0;
}

.nav-logo-text {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: 0.01em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
}

.nav-links a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.nav-links a:hover {
  color: var(--color-primary);
}

.nav-cta {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary) !important;
  border: 1px solid var(--color-primary-border);
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-full);
  transition: background var(--transition-interactive), border-color var(--transition-interactive);
}

.nav-cta:hover {
  background: var(--color-primary-dim) !important;
  border-color: var(--color-primary) !important;
}

.nav-mobile-toggle {
  display: none;
  padding: var(--space-2);
  color: var(--color-text-muted);
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 4rem;
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-divider);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: var(--space-4) 0;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links li {
    width: 100%;
  }

  .nav-links a {
    display: block;
    padding: var(--space-3) var(--space-6);
  }

  .nav-mobile-toggle {
    display: block;
  }
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-block: clamp(var(--space-10), 4vw, var(--space-16));
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../images/hero-bg.png');
  background-size: cover;
  background-position: center;
  opacity: 0.35;
  z-index: 0;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(13, 17, 23, 0.95) 0%,
    rgba(13, 17, 23, 0.7) 50%,
    rgba(13, 17, 23, 0.85) 100%
  );
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 860px;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-6);
}

.hero-eyebrow::before {
  content: '';
  display: block;
  width: 24px;
  height: 1px;
  background: var(--color-primary);
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 2.2vw + 0.8rem, 2.8rem);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-bottom: var(--space-8);
}

/* Georgia italic legibility boost at display sizes */
.hero-title em,
.section-title em,
.pov-quote {
  font-style: italic;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.hero-title em {
  color: var(--color-primary);
}

.hero-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: var(--space-10);
  max-width: 56ch;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-inverse);
  background: var(--color-primary);
  padding: var(--space-3) var(--space-8);
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: background var(--transition-interactive), box-shadow var(--transition-interactive), transform var(--transition-interactive);
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  box-shadow: var(--shadow-glow);
  transform: translateY(-1px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  padding: var(--space-3) var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  transition: color var(--transition-interactive), border-color var(--transition-interactive);
}

.btn-secondary:hover {
  color: var(--color-text);
  border-color: var(--color-text-muted);
}

/* Hero metrics strip */
.hero-metrics {
  display: flex;
  gap: clamp(var(--space-5), 3vw, var(--space-12));
  margin-top: clamp(var(--space-10), 4vw, var(--space-16));
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-divider);
  flex-wrap: nowrap;
}

@media (max-width: 600px) {
  .hero-metrics {
    flex-wrap: wrap;
    gap: var(--space-6);
  }
}

.metric-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.metric-value {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2vw + 0.5rem, 2.5rem);
  font-weight: 400;
  color: var(--color-primary);
  letter-spacing: -0.02em;
  line-height: 1;
}

.metric-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  max-width: 20ch;
  line-height: 1.4;
  word-break: normal;
  overflow-wrap: normal;
  hyphens: none;
}

/* ============================================================
   EXPERTISE SECTION
   ============================================================ */
.section-label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 400;
  color: var(--color-text);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-6);
}

.section-title em {
  font-style: italic;
  color: var(--color-primary);
}

.section-body {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 60ch;
  margin-bottom: var(--space-12);
}

.expertise-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-5);
  margin-top: var(--space-12);
}

.expertise-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition: border-color var(--transition-interactive), box-shadow var(--transition-interactive), transform var(--transition-interactive);
}

.expertise-card:hover {
  border-color: var(--color-primary-border);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.expertise-icon {
  width: 44px;
  height: 44px;
  background: var(--color-primary-dim);
  border: 1px solid var(--color-primary-border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-5);
  color: var(--color-primary);
}

.expertise-title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-3);
  line-height: 1.3;
}

.expertise-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* ============================================================
   ABOUT / PHILOSOPHY SPLIT SECTION
   ============================================================ */
.about-section {
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-12), 6vw, var(--space-24));
  align-items: center;
}

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

.about-visual {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
}

.about-headshot {
  width: 100%;
  aspect-ratio: 4/5;
  object-fit: cover;
  object-position: center top;
  display: block;
}

.about-visual-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-surface-offset) 100%);
  padding: var(--space-8);
  text-align: center;
}

.about-monogram {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-style: italic;
  color: var(--color-primary);
  letter-spacing: -0.02em;
  line-height: 1;
}

.about-visual-label {
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-faint);
}

.about-tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.about-tag {
  font-size: var(--text-xs);
  padding: var(--space-1) var(--space-3);
  background: var(--color-primary-dim);
  border: 1px solid var(--color-primary-border);
  border-radius: var(--radius-full);
  color: var(--color-primary);
  font-weight: 500;
  letter-spacing: 0.03em;
}

.about-content .section-body {
  margin-bottom: var(--space-8);
}

.credential-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.credential-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  max-width: none;
}

.credential-list li::before {
  content: '';
  display: block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  margin-top: 0.5em;
  flex-shrink: 0;
}

/* ============================================================
   CASE STUDIES / WORK
   ============================================================ */
.work-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--space-6);
  margin-top: var(--space-12);
}

.work-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  overflow: hidden;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition-interactive), box-shadow var(--transition-interactive), transform var(--transition-interactive);
}

.work-card:hover {
  border-color: var(--color-primary-border);
  box-shadow: var(--shadow-glow);
  transform: translateY(-3px);
}

.work-card-header {
  padding: var(--space-8);
  background: linear-gradient(135deg, var(--color-surface-offset) 0%, var(--color-surface) 100%);
  border-bottom: 1px solid var(--color-divider);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.work-card-category {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.work-card-body {
  padding: var(--space-8);
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.work-card-title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.3;
}

.work-card-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
  max-width: none;
}

.work-card-result {
  margin-top: auto;
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-divider);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.work-card-metric {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-style: italic;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

.work-card-metric-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.03em;
}

/* ============================================================
   TOOLS / STACK SECTION
   ============================================================ */
.tools-section {
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: var(--space-3);
  margin-top: var(--space-10);
}

@media (max-width: 1024px) {
  .tools-grid { grid-template-columns: repeat(5, 1fr); }
}

@media (max-width: 640px) {
  .tools-grid { grid-template-columns: repeat(3, 1fr); }
}

.tool-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-5) var(--space-4);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-align: center;
  transition: border-color var(--transition-interactive);
}

.tool-badge:hover {
  border-color: var(--color-primary-border);
}

.tool-name {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}

.tool-category {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.04em;
}

/* ============================================================
   CONTACT / CTA SECTION
   ============================================================ */
.cta-section {
  text-align: center;
  padding-block: clamp(var(--space-24), 12vw, var(--space-32));
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(167, 139, 250, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.cta-section .section-title {
  margin-bottom: var(--space-5);
}

.cta-section .section-body {
  margin-inline: auto;
  margin-bottom: var(--space-10);
}

.cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-5);
  flex-wrap: wrap;
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  border-top: 1px solid var(--color-divider);
  padding-block: var(--space-10);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.footer-copy {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.footer-links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  list-style: none;
}

.footer-links a {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-decoration: none;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: color var(--transition-interactive);
}

.footer-links a:hover {
  color: var(--color-primary);
}

/* ============================================================
   DIVIDER GLOW LINE
   ============================================================ */
.glow-divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--color-primary) 50%, transparent 100%);
  opacity: 0.3;
  margin-block: 0;
}