/* ==========================================================================
   Réka Várhegyi — Personal AI Assistant Website
   Aesthetic: Editorial luxury, warm & feminine precision
   ========================================================================== */

/* --- Design Tokens --- */
:root {
  /* Palette */
  --color-cream:       #F9F5EF;
  --color-cream-dark:  #F0EAE0;
  --color-ivory:       #FFFDF9;
  --color-charcoal:    #2A2520;
  --color-charcoal-60: #2A252099;
  --color-charcoal-30: #2A25204D;
  --color-copper:      #B8857A;
  --color-copper-light:#D4AFA6;
  --color-copper-glow: #B8857A33;
  --color-rose:        #C9A09A;
  --color-sage:        #8A9A87;
  --color-sage-light:  #A8B5A5;

  /* Typography */
  --font-display: 'Cormorant Garamond', 'Georgia', serif;
  --font-body:    'Outfit', 'Helvetica Neue', sans-serif;

  /* Spacing */
  --space-xs:  0.5rem;
  --space-sm:  1rem;
  --space-md:  1.5rem;
  --space-lg:  2.5rem;
  --space-xl:  4rem;
  --space-2xl: 6rem;
  --space-3xl: 8rem;

  /* Layout */
  --max-width:    1200px;
  --border-radius: 12px;

  /* Motion */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 0.3s;
  --duration-med:  0.6s;
  --duration-slow: 1s;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-charcoal);
  background-color: var(--color-cream);
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

/* --- Grain Texture Overlay --- */
.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 200px 200px;
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-sm) 0;
  transition: background-color var(--duration-fast) ease,
              backdrop-filter var(--duration-fast) ease;
}

.nav--scrolled {
  background-color: rgba(249, 245, 239, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.nav__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 500;
  letter-spacing: -0.02em;
}

.nav__logo-dot,
.footer__logo-dot {
  color: var(--color-copper);
}

.nav__menu-btn {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 110;
}

.nav__menu-btn span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--color-charcoal);
  transition: transform var(--duration-fast) var(--ease-out),
              opacity var(--duration-fast) var(--ease-out);
  transform-origin: center;
}

.nav__menu-btn[aria-expanded="true"] span:first-child {
  transform: translateY(3.75px) rotate(45deg);
}

.nav__menu-btn[aria-expanded="true"] span:last-child {
  transform: translateY(-3.75px) rotate(-45deg);
}

.nav__links {
  display: flex;
  gap: var(--space-lg);
  font-size: 0.875rem;
  font-weight: 400;
  letter-spacing: 0.02em;
}

.nav__links a {
  position: relative;
  padding: 4px 0;
  transition: color var(--duration-fast) ease;
}

.nav__links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-copper);
  transition: width var(--duration-fast) var(--ease-out);
}

.nav__links a:hover::after,
.nav__links a:focus-visible::after {
  width: 100%;
}

/* Mobile nav */
@media (max-width: 768px) {
  .nav__links {
    position: fixed;
    inset: 0;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    background: var(--color-cream);
    font-size: 1.25rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--duration-fast) ease;
  }

  .nav__links--open {
    opacity: 1;
    pointer-events: all;
  }
}

@media (min-width: 769px) {
  .nav__menu-btn {
    display: none;
  }
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 0.9375rem;
  letter-spacing: 0.02em;
  padding: 0.875rem 2rem;
  border-radius: 100px;
  transition: all var(--duration-fast) var(--ease-out);
  cursor: pointer;
  border: none;
}

.btn--primary {
  background: var(--color-charcoal);
  color: var(--color-cream);
}

.btn--primary:hover {
  background: #3D3630;
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(42, 37, 32, 0.2);
}

.btn--ghost {
  background: transparent;
  color: var(--color-charcoal);
  border: 1.5px solid var(--color-charcoal-30);
}

.btn--ghost:hover {
  border-color: var(--color-copper);
  color: var(--color-copper);
}

.btn--large {
  padding: 1.1rem 2.5rem;
  font-size: 1rem;
}

/* --- Hero --- */
.hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: calc(80px + var(--space-lg)) var(--space-md) var(--space-lg);
  position: relative;
  background:
    radial-gradient(ellipse 80% 60% at 75% 20%, var(--color-copper-glow) 0%, transparent 60%),
    radial-gradient(ellipse 50% 80% at 20% 80%, rgba(138, 154, 135, 0.08) 0%, transparent 50%),
    var(--color-cream);
}

.hero__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  align-items: center;
}

@media (min-width: 900px) {
  .hero__inner {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
  }
}

.hero__kicker {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-copper);
  margin-bottom: var(--space-sm);
}

.hero__title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2.8rem, 6vw, 4.8rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-md);
}

.hero__title-line {
  display: block;
}

.hero__title-dot {
  color: var(--color-copper);
}

.hero__subtitle {
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--color-charcoal-60);
  max-width: 480px;
  margin-bottom: var(--space-lg);
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

/* Portrait */
.hero__portrait {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

.hero__portrait-frame {
  position: relative;
  width: 100%;
  max-width: 400px;
  border-radius: 200px 200px 40px 40px;
  overflow: hidden;
  background: linear-gradient(160deg, var(--color-cream-dark) 0%, var(--color-copper-light) 100%);
}

.hero__portrait-img {
  width: 100%;
  height: auto;
  display: block;
  mix-blend-mode: normal;
}

.hero__portrait-glow {
  position: absolute;
  inset: -20%;
  background: radial-gradient(circle at 50% 30%, var(--color-copper-glow) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

.hero__portrait-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: var(--space-sm);
  padding: 0.5rem 1.25rem;
  border-radius: 100px;
  background: rgba(255, 253, 249, 0.8);
  backdrop-filter: blur(10px);
  font-size: 0.8125rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--color-charcoal-60);
  border: 1px solid rgba(42, 37, 32, 0.06);
}

.hero__portrait-badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-sage);
  animation: pulse-dot 2.5s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.5; transform: scale(0.8); }
}

/* Scroll hint */
.hero__scroll-hint {
  position: absolute;
  bottom: var(--space-lg);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-charcoal-30);
}

.hero__scroll-dot {
  animation: scroll-bob 2s ease-in-out infinite;
}

@keyframes scroll-bob {
  0%, 100% { cy: 8; opacity: 1; }
  50%      { cy: 16; opacity: 0.3; }
}

@media (max-width: 768px) {
  .hero__scroll-hint { display: none; }
}

/* --- Sections: Shared --- */
.section {
  padding: var(--space-3xl) var(--space-md);
}

.section__inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.section__label {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-copper);
  margin-bottom: var(--space-sm);
}

.section__title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.section__header {
  margin-bottom: var(--space-2xl);
}

.section__header--center {
  text-align: center;
}

/* --- "Helps" Section --- */
.helps__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

@media (min-width: 600px) {
  .helps__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
  }
}

.helps__item {
  padding: var(--space-lg);
  border-radius: var(--border-radius);
  background: var(--color-ivory);
  border: 1px solid rgba(42, 37, 32, 0.04);
  transition: transform var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out);
}

.helps__item:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(42, 37, 32, 0.06);
}

.helps__number {
  display: block;
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 300;
  color: var(--color-copper-light);
  line-height: 1;
  margin-bottom: var(--space-sm);
}

.helps__item-title {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}

.helps__item-text {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--color-charcoal-60);
}

/* --- Values Section --- */
.section--values {
  background:
    radial-gradient(ellipse 60% 50% at 10% 50%, rgba(184, 133, 122, 0.06) 0%, transparent 50%),
    var(--color-cream);
}

.values__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
}

@media (min-width: 900px) {
  .values__layout {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: start;
  }
}

.values__left .section__title {
  margin-bottom: var(--space-md);
}

.values__note {
  font-size: 0.9375rem;
  color: var(--color-charcoal-60);
  line-height: 1.75;
  max-width: 400px;
  font-style: italic;
}

.values__right {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.values__card {
  padding: var(--space-lg);
  border-radius: var(--border-radius);
  background: var(--color-ivory);
  border: 1px solid rgba(42, 37, 32, 0.04);
  transition: transform var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out);
}

.values__card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(42, 37, 32, 0.05);
}

.values__card-icon {
  color: var(--color-copper);
  margin-bottom: var(--space-sm);
}

.values__card h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}

.values__card p {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--color-charcoal-60);
}

/* --- Capabilities Section --- */
.section--capabilities {
  background: var(--color-charcoal);
  color: var(--color-cream);
  border-radius: 40px 40px 0 0;
  margin-top: calc(-1 * var(--space-xl));
  padding-top: var(--space-3xl);
  position: relative;
}

.section--capabilities .section__label {
  color: var(--color-copper-light);
}

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

@media (min-width: 600px) {
  .capabilities__grid {
    grid-template-columns: 1fr 1fr;
  }
}

.cap-card {
  padding: var(--space-lg);
  border-radius: var(--border-radius);
  background: rgba(255, 253, 249, 0.04);
  border: 1px solid rgba(255, 253, 249, 0.08);
  transition: background var(--duration-fast) ease,
              transform var(--duration-fast) var(--ease-out),
              border-color var(--duration-fast) ease;
}

.cap-card:hover {
  background: rgba(255, 253, 249, 0.07);
  border-color: rgba(184, 133, 122, 0.3);
  transform: translateY(-4px);
}

.cap-card__icon {
  color: var(--color-copper-light);
  margin-bottom: var(--space-sm);
}

.cap-card__title {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 400;
  margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
}

.cap-card__text {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: rgba(249, 245, 239, 0.6);
  margin-bottom: var(--space-md);
}

.cap-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.cap-card__tags li {
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  padding: 0.35rem 0.85rem;
  border-radius: 100px;
  border: 1px solid rgba(249, 245, 239, 0.12);
  color: rgba(249, 245, 239, 0.5);
}

/* --- CTA Section --- */
.section--cta {
  background: var(--color-charcoal);
  color: var(--color-cream);
  text-align: center;
  padding: var(--space-3xl) var(--space-md) var(--space-2xl);
}

.section--cta .section__label {
  color: var(--color-copper-light);
}

.cta__content {
  max-width: 600px;
  margin: 0 auto;
}

.cta__title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2rem, 4.5vw, 3.4rem);
  line-height: 1.12;
  letter-spacing: -0.025em;
  margin-bottom: var(--space-md);
}

.cta__text {
  font-size: 1.0625rem;
  line-height: 1.75;
  color: rgba(249, 245, 239, 0.55);
  margin-bottom: var(--space-xl);
}

.cta__actions .btn--primary {
  background: var(--color-copper);
  color: var(--color-ivory);
}

.cta__actions .btn--primary:hover {
  background: var(--color-copper-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(184, 133, 122, 0.25);
}

.cta__footnote {
  margin-top: var(--space-md);
  font-size: 0.8125rem;
  color: rgba(249, 245, 239, 0.3);
  letter-spacing: 0.03em;
}

/* --- Footer --- */
.footer {
  background: var(--color-charcoal);
  color: var(--color-cream);
  border-top: 1px solid rgba(249, 245, 239, 0.06);
  padding: var(--space-lg) var(--space-md);
}

.footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.footer__logo {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 500;
}

.footer__tagline {
  font-size: 0.8125rem;
  color: rgba(249, 245, 239, 0.35);
  margin-top: 0.25rem;
}

.footer__copy {
  font-size: 0.8125rem;
  color: rgba(249, 245, 239, 0.25);
}

/* --- Reveal Animations --- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

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

/* Stagger children */
.reveal:nth-child(2) { transition-delay: 0.08s; }
.reveal:nth-child(3) { transition-delay: 0.16s; }
.reveal:nth-child(4) { transition-delay: 0.24s; }

/* --- Focus-visible --- */
:focus-visible {
  outline: 2px solid var(--color-copper);
  outline-offset: 4px;
  border-radius: 4px;
}

/* --- Selection --- */
::selection {
  background: var(--color-copper-light);
  color: var(--color-charcoal);
}

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

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