/* ===================================================================
   BARLOW TUCKER — Personal Brand Landing Page
   Design System + Complete Styles
   =================================================================== */

/* --- Design Tokens --- */
:root {
  /* Backgrounds */
  --bg-warm:        #FAF7F2;
  --bg-beige:       #F0EBE3;
  --bg-dark:        #1A1A2E;

  /* Text */
  --text-primary:   #2D2D2D;
  --text-secondary: #5A5A5A;
  --text-inverse:   #FAF7F2;

  /* Accent */
  --accent:         #E07A3A;
  --accent-hover:   #c96a2f;

  /* Typography */
  --font-heading: 'Montserrat', sans-serif;
  --font-body:    'Lora', serif;

  /* Type Scale (1.25 ratio) */
  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-md:   1.125rem;
  --text-lg:   1.25rem;
  --text-xl:   1.5rem;
  --text-2xl:  1.875rem;
  --text-3xl:  2.375rem;
  --text-4xl:  3rem;
  --text-hero: 3.75rem;

  /* Spacing (8px base grid) */
  --space-1:  0.25rem;   /* 4px */
  --space-2:  0.5rem;    /* 8px */
  --space-3:  0.75rem;   /* 12px */
  --space-4:  1rem;      /* 16px */
  --space-5:  1.5rem;    /* 24px */
  --space-6:  2rem;      /* 32px */
  --space-7:  2.5rem;    /* 40px */
  --space-8:  3rem;      /* 48px */
  --space-9:  4rem;      /* 64px */
  --space-10: 5rem;      /* 80px */
  --space-11: 6rem;      /* 96px */

  /* Layout */
  --container-max: 72rem;
  --container-pad: var(--space-5);

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Borders & Radius */
  --radius-sm:  0.375rem;
  --radius-md:  0.5rem;
  --radius-lg:  1rem;
  --radius-full: 50%;
}

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

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

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--text-primary);
  background-color: var(--bg-warm);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

ul, ol {
  list-style: none;
}

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

button {
  font: inherit;
  border: none;
  background: none;
  cursor: pointer;
  color: inherit;
}

/* --- Focus Indicators --- */
:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* --- Skip Link --- */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  padding: var(--space-3) var(--space-5);
  background: var(--accent);
  color: #fff;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--text-sm);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  z-index: 1000;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 0;
}

/* --- Container --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
}

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

/* --- Section Header Pattern --- */
.section-label {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: var(--space-3);
}

.section-label--light {
  color: var(--accent);
}

.section-title {
  font-size: var(--text-3xl);
  color: var(--text-primary);
  margin-bottom: var(--space-6);
}

.section-title--light {
  color: var(--text-inverse);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--text-sm);
  letter-spacing: 0.02em;
  padding: 0.875rem 2rem;
  border-radius: var(--radius-md);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast), color var(--transition-fast);
  white-space: nowrap;
}

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

.btn--primary:hover {
  background-color: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(224, 122, 58, 0.35);
}

.btn--outline {
  background-color: transparent;
  color: var(--text-inverse);
  border: 2px solid rgba(250, 247, 242, 0.4);
}

.btn--outline:hover {
  border-color: var(--text-inverse);
  background-color: rgba(250, 247, 242, 0.1);
  transform: translateY(-2px);
}

.btn--sm {
  padding: 0.625rem 1.5rem;
  font-size: var(--text-xs);
}

/* --- Social Links --- */
.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-full);
  color: var(--text-inverse);
  transition: color var(--transition-fast), transform var(--transition-fast);
}

.social-link:hover {
  color: var(--accent);
  transform: translateY(-2px);
}


/* ===================================================================
   NAVIGATION
   =================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  transition: background-color var(--transition-base), box-shadow var(--transition-base);
}

.site-header.scrolled {
  background-color: var(--bg-warm);
  box-shadow: 0 1px 12px rgba(0, 0, 0, 0.08);
}

.site-header.scrolled .nav__link,
.site-header.scrolled .nav__logo {
  color: var(--text-primary);
}

.site-header.scrolled .nav__toggle-bar {
  background-color: var(--text-primary);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
}

.nav__logo {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: var(--text-xl);
  color: var(--text-inverse);
  letter-spacing: -0.02em;
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav__link {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--text-inverse);
  position: relative;
  padding-bottom: var(--space-1);
  transition: color var(--transition-fast);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent);
  transition: width var(--transition-base);
}

.nav__link:hover::after {
  width: 100%;
}

.nav__link:hover {
  color: var(--accent);
}

.site-header.scrolled .nav__link:hover {
  color: var(--accent);
}

/* --- Hamburger Toggle --- */
.nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2.5rem;
  height: 2.5rem;
  z-index: 110;
}

.nav__toggle-bar {
  display: block;
  width: 1.5rem;
  height: 2px;
  background-color: var(--text-inverse);
  border-radius: 2px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.nav__toggle.active .nav__toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav__toggle.active .nav__toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav__toggle.active .nav__toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}


/* ===================================================================
   HERO SECTION
   =================================================================== */
.hero {
  background-color: var(--bg-dark);
  padding-top: calc(4.5rem + var(--space-10));
  padding-bottom: var(--space-10);
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  align-items: center;
}

.hero__greeting {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 400;
  color: var(--accent);
  margin-bottom: var(--space-2);
}

.hero__name {
  font-size: var(--text-4xl);
  font-weight: 800;
  color: var(--text-inverse);
  margin-bottom: var(--space-3);
  letter-spacing: -0.02em;
}

.hero__tagline {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 600;
  color: rgba(250, 247, 242, 0.7);
  margin-bottom: var(--space-5);
}

.hero__description {
  font-size: var(--text-md);
  color: rgba(250, 247, 242, 0.65);
  max-width: 36rem;
  margin-bottom: var(--space-6);
  line-height: 1.8;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.hero__social {
  display: flex;
  gap: var(--space-3);
}

/* Headshot */
.hero__image {
  display: flex;
  justify-content: center;
  order: -1;
}

.hero__headshot {
  position: relative;
  width: 18rem;
  height: 18rem;
  border-radius: var(--radius-full);
  overflow: hidden;
  border: 4px solid rgba(224, 122, 58, 0.3);
  animation: float 6s ease-in-out infinite;
}

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

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-12px); }
}

/* --- Entrance Animations --- */
.entrance-stagger {
  opacity: 0;
  transform: translateY(1.5rem);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.entrance-stagger.visible {
  opacity: 1;
  transform: translateY(0);
}


/* ===================================================================
   ABOUT SECTION
   =================================================================== */
.about {
  background-color: var(--bg-warm);
  padding: var(--space-11) 0;
}

.about__content {
  max-width: 44rem;
  margin-bottom: var(--space-9);
}

.about__lead {
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--space-5);
  line-height: 1.8;
}

.about__content p + p {
  margin-top: var(--space-4);
  color: var(--text-secondary);
}

.about__highlights {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}

/* --- Highlight Cards --- */
.highlight-card {
  background-color: #fff;
  padding: var(--space-6) var(--space-5);
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.04);
  border: 1px solid rgba(0, 0, 0, 0.04);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.highlight-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.highlight-card__number {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--text-4xl);
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  margin-bottom: var(--space-2);
}

.highlight-card__label {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
}


/* ===================================================================
   EXPERIENCE SECTION
   =================================================================== */
.experience {
  background-color: var(--bg-beige);
  padding: var(--space-11) 0;
}

/* --- Timeline --- */
.timeline {
  position: relative;
  padding-left: 2.5rem;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0.625rem;
  width: 2px;
  background-color: rgba(0, 0, 0, 0.1);
}

.timeline__item {
  position: relative;
  margin-bottom: var(--space-8);
}

.timeline__item:last-child {
  margin-bottom: 0;
}

/* Timeline Markers */
.timeline__marker {
  position: absolute;
  left: -2.5rem;
  top: var(--space-6);
  width: 1rem;
  height: 1rem;
  border-radius: var(--radius-full);
  background-color: var(--bg-beige);
  border: 3px solid var(--accent);
  transform: translateX(0.185rem);
  z-index: 1;
}

.timeline__marker--current {
  background-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(224, 122, 58, 0.2);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(224, 122, 58, 0.2); }
  50%      { box-shadow: 0 0 0 8px rgba(224, 122, 58, 0.1); }
}

/* Timeline Cards */
.timeline__card {
  background-color: #fff;
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.04);
  border: 1px solid rgba(0, 0, 0, 0.04);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.timeline__card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.timeline__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.timeline__date {
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
}

.timeline__tag {
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
}

.timeline__tag--ai {
  background-color: rgba(224, 122, 58, 0.12);
  color: var(--accent);
}

.timeline__tag--startup {
  background-color: rgba(46, 139, 87, 0.1);
  color: #2e8b57;
}

.timeline__tag--enterprise {
  background-color: rgba(70, 130, 180, 0.1);
  color: #4682b4;
}

.timeline__tag--engineering {
  background-color: rgba(138, 110, 165, 0.1);
  color: #8a6ea5;
}

.timeline__role {
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: var(--space-1);
}

.timeline__company {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--accent);
  margin-bottom: var(--space-4);
}

.timeline__description {
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
  font-size: var(--text-sm);
  line-height: 1.7;
}

.timeline__highlights {
  list-style: none;
  padding: 0;
}

.timeline__highlights li {
  position: relative;
  padding-left: var(--space-5);
  margin-bottom: var(--space-2);
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.timeline__highlights li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.6rem;
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background-color: var(--accent);
}

.timeline__highlights li:last-child {
  margin-bottom: 0;
}


/* ===================================================================
   CONTACT SECTION
   =================================================================== */
.contact {
  background-color: var(--bg-dark);
  padding: var(--space-11) 0;
}

.contact__cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
  margin-bottom: var(--space-9);
}

/* --- Contact Cards --- */
.contact-card {
  background-color: rgba(250, 247, 242, 0.05);
  border: 1px solid rgba(250, 247, 242, 0.1);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  text-align: center;
  transition: transform var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast);
}

.contact-card:hover {
  transform: translateY(-4px);
  background-color: rgba(250, 247, 242, 0.08);
  border-color: rgba(224, 122, 58, 0.3);
}

.contact-card__icon {
  color: var(--accent);
  margin-bottom: var(--space-4);
}

.contact-card__title {
  font-size: var(--text-xl);
  color: var(--text-inverse);
  margin-bottom: var(--space-3);
}

.contact-card__description {
  font-size: var(--text-sm);
  color: rgba(250, 247, 242, 0.6);
  margin-bottom: var(--space-5);
  line-height: 1.7;
}

/* --- Direct Email --- */
.contact__direct {
  text-align: center;
  color: rgba(250, 247, 242, 0.5);
  font-size: var(--text-sm);
}

.contact__email {
  color: var(--accent);
  font-weight: 600;
  position: relative;
  padding-bottom: 2px;
  transition: color var(--transition-fast);
}

.contact__email::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent);
  transition: width var(--transition-base);
}

.contact__email:hover::after {
  width: 100%;
}


/* ===================================================================
   FOOTER
   =================================================================== */
.footer {
  background-color: var(--bg-dark);
  border-top: 1px solid rgba(250, 247, 242, 0.08);
  padding: var(--space-6) 0;
}

.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

.footer__copy {
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  color: rgba(250, 247, 242, 0.35);
}

.footer__social {
  display: flex;
  gap: var(--space-3);
}

.footer__social .social-link {
  color: rgba(250, 247, 242, 0.4);
}

.footer__social .social-link:hover {
  color: var(--accent);
}


/* ===================================================================
   SCROLL REVEAL
   =================================================================== */
.scroll-reveal {
  opacity: 0;
  transform: translateY(1.5rem);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.scroll-reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}


/* ===================================================================
   RESPONSIVE BREAKPOINTS
   =================================================================== */

/* Small tablets (640px) */
@media (min-width: 40rem) {
  .hero__name {
    font-size: var(--text-hero);
  }

  .section-title {
    font-size: var(--text-4xl);
  }

  .about__highlights {
    grid-template-columns: repeat(3, 1fr);
  }

  .contact__cards {
    grid-template-columns: repeat(3, 1fr);
  }

  .footer__inner {
    flex-direction: row;
    justify-content: space-between;
  }
}

/* Tablets (768px) */
@media (min-width: 48rem) {
  :root {
    --container-pad: var(--space-8);
  }

  .hero {
    padding-top: calc(4.5rem + var(--space-11));
    padding-bottom: var(--space-11);
  }

  .hero__inner {
    grid-template-columns: 3fr 2fr;
  }

  .hero__image {
    order: 0;
  }

  .hero__headshot {
    width: 20rem;
    height: 20rem;
  }

  .timeline {
    padding-left: 3rem;
  }

  .timeline__marker {
    left: -3rem;
    width: 1.25rem;
    height: 1.25rem;
    transform: translateX(0.06rem);
  }

  .timeline__card {
    padding: var(--space-7);
  }
}

/* Desktop (1024px) */
@media (min-width: 64rem) {
  .hero__headshot {
    width: 22rem;
    height: 22rem;
  }

  .hero__description {
    font-size: var(--text-lg);
  }

  .contact-card {
    padding: var(--space-8);
  }
}

/* --- Mobile Menu --- */
@media (max-width: 47.99rem) {
  .nav__toggle {
    display: flex;
  }

  .nav__menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: center;
    background-color: var(--bg-dark);
    padding: 5.5rem var(--space-5) var(--space-6);
    gap: var(--space-5);
    transform: translateY(-100%);
    transition: transform var(--transition-base);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    z-index: 99;
  }

  .nav__menu.open {
    transform: translateY(0);
  }

  .nav__list {
    flex-direction: column;
    gap: var(--space-5);
  }

  .nav__link {
    font-size: var(--text-lg);
  }

  /* Ensure hamburger bars are visible when menu is open on scrolled header */
  .nav__toggle.active .nav__toggle-bar {
    background-color: var(--text-inverse);
  }
}


/* ===================================================================
   REDUCED MOTION
   =================================================================== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }

  .scroll-reveal {
    opacity: 1;
    transform: none;
  }

  .entrance-stagger {
    opacity: 1;
    transform: none;
  }
}