/* ============================================================
   Amanda Ng — Portfolio
   style.css
   ============================================================ */

/* --- Custom Properties ------------------------------------ */
:root {
  --color-bg:        #ffffff;
  --color-text:      #1a1a1a;
  --color-muted:     #888888;
  --color-accent:    #f0f0f0;
  --color-border:    #e8e8e8;
  --color-placeholder: #f5f5f5;
  --color-overlay:   rgba(0, 0, 0, 0.85);

  --font-logo:   'Caveat', cursive;
  --font-serif:  'Cormorant Garamond', serif;
  --font-sans:   'Montserrat', sans-serif;

  --size-nav-h:  64px;
  --size-max:    1280px;
  --gap-gallery: 16px;

  --ease-smooth: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-out:    cubic-bezier(0.0, 0.0, 0.2, 1);

  --transition-base: 0.3s var(--ease-smooth);
  --transition-fast: 0.18s var(--ease-smooth);
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-serif);
  font-size: 18px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul {
  list-style: none;
}

/* --- Typography -------------------------------------------- */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.2;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h3 { font-size: clamp(1.1rem, 2vw, 1.5rem); }

p { margin-bottom: 1em; }
p:last-child { margin-bottom: 0; }

strong { font-weight: 600; }
em { font-style: italic; }

/* --- Layout Utilities -------------------------------------- */
.container {
  width: 100%;
  max-width: var(--size-max);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 3rem);
}

.section {
  padding-block: clamp(3rem, 8vw, 6rem);
}

/* ============================================================
   NAV
   ============================================================ */
#nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--size-nav-h);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

/* Logo */
.nav-logo {
  display: flex;
  align-items: center;
  transition: opacity var(--transition-fast);
}

.nav-logo:hover {
  opacity: 0.65;
}

.nav-logo-img {
  height: 46px;
  width: auto;
  display: block;
}

/* Nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 0;
}

.nav-links > li {
  position: relative;
}

.nav-links a,
.nav-toggle-btn {
  display: block;
  padding: 0.5rem 1rem;
  font-family: var(--font-sans);
  font-size: 0.675rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text);
  transition: color var(--transition-fast);
  background: none;
  border: none;
  cursor: pointer;
}

.nav-links a:hover,
.nav-toggle-btn:hover {
  color: var(--color-muted);
}

.nav-links a.active {
  color: var(--color-muted);
}

/* Portfolio dropdown */
.nav-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  min-width: 200px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  padding: 0.5rem 0;
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(-6px);
  transition:
    opacity var(--transition-fast),
    transform var(--transition-fast),
    visibility var(--transition-fast);
  box-shadow: 0 8px 32px rgba(0,0,0,0.08);
}

.nav-dropdown a {
  padding: 0.6rem 1.25rem;
  font-size: 0.65rem;
  white-space: nowrap;
  display: block;
}

.nav-dropdown a:hover {
  background: var(--color-accent);
  color: var(--color-text);
}

.nav-dropdown a.active {
  color: var(--color-muted);
}

.has-dropdown:hover .nav-dropdown,
.has-dropdown:focus-within .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

/* Dropdown chevron */
.nav-toggle-btn::after {
  content: ' ›';
  display: inline-block;
  transform: rotate(90deg);
  font-size: 0.8em;
  margin-left: 2px;
  transition: transform var(--transition-fast);
}

.has-dropdown:hover .nav-toggle-btn::after {
  transform: rotate(-90deg);
}

/* Mobile hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 0.5rem;
  background: none;
  border: none;
  cursor: pointer;
}

.nav-hamburger span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--color-text);
  transition: var(--transition-fast);
}

/* Mobile menu */
.nav-mobile {
  display: none;
  position: fixed;
  inset: var(--size-nav-h) 0 0 0;
  background: var(--color-bg);
  z-index: 99;
  overflow-y: auto;
  padding: 2rem var(--size-pad, 1.25rem);
}

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

.nav-mobile a {
  display: block;
  padding: 1rem 0;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
}

.nav-mobile a.sub {
  padding-left: 1.5rem;
  font-size: 0.72rem;
  color: var(--color-muted);
}

/* ============================================================
   MAIN CONTENT OFFSET
   ============================================================ */
main {
  padding-top: var(--size-nav-h);
}

/* ============================================================
   FOOTER
   ============================================================ */
#footer {
  border-top: 1px solid var(--color-border);
  padding-block: 3rem;
  text-align: center;
}

.footer-tagline {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.05rem;
  color: var(--color-muted);
  margin-bottom: 1.25rem;
}

.footer-social {
  display: flex;
  justify-content: center;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  color: var(--color-muted);
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.footer-social a:hover {
  color: var(--color-text);
  border-color: var(--color-text);
}

.footer-social svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

.footer-copy {
  font-family: var(--font-sans);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-border);
}

/* ============================================================
   HERO (index)
   ============================================================ */
.hero {
  min-height: calc(100vh - var(--size-nav-h));
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: clamp(2rem, 6vw, 5rem) clamp(1.25rem, 4vw, 3rem);
  text-align: center;
}

.hero-eyebrow {
  font-family: var(--font-sans);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeUp 0.8s var(--ease-out) 0.2s forwards;
}

.hero-image-wrap {
  width: 100%;
  max-width: 680px;
  margin-bottom: 2rem;
  opacity: 0;
  animation: fadeUp 1s var(--ease-out) 0.4s forwards;
}

.hero-title {
  font-size: clamp(0.85rem, 1.5vw, 1.1rem);
  font-style: italic;
  color: var(--color-muted);
  margin-bottom: 0.25rem;
  opacity: 0;
  animation: fadeUp 0.8s var(--ease-out) 0.7s forwards;
}

.hero-cta {
  display: inline-block;
  margin-top: 2.5rem;
  font-family: var(--font-sans);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 0.75rem 2rem;
  border: 1px solid var(--color-text);
  color: var(--color-text);
  transition: background var(--transition-fast), color var(--transition-fast);
  opacity: 0;
  animation: fadeUp 0.8s var(--ease-out) 0.9s forwards;
}

.hero-cta:hover {
  background: var(--color-text);
  color: var(--color-bg);
}

/* Featured works strip */
.featured-section {
  padding: 0 clamp(1.25rem, 4vw, 3rem) clamp(3rem, 6vw, 5rem);
}

.featured-label {
  font-family: var(--font-sans);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 2rem;
  text-align: center;
}

.featured-link {
  display: block;
  text-align: center;
  margin-top: 2.5rem;
  font-family: var(--font-sans);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-muted);
  transition: color var(--transition-fast);
}

.featured-link:hover {
  color: var(--color-text);
}

/* ============================================================
   PAGE HEADER
   ============================================================ */
.page-header {
  padding: clamp(3rem, 6vw, 5rem) clamp(1.25rem, 4vw, 3rem) clamp(2rem, 4vw, 3rem);
  text-align: center;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: clamp(2rem, 4vw, 3.5rem);
}

.page-header__eyebrow {
  font-family: var(--font-sans);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 0.75rem;
}

.page-header__title {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 300;
  letter-spacing: -0.01em;
}

.page-header__sub {
  margin-top: 0.75rem;
  font-style: italic;
  color: var(--color-muted);
  font-size: 1rem;
}

/* ============================================================
   GALLERY (Masonry-style CSS Grid)
   ============================================================ */
.gallery-wrap {
  padding-inline: clamp(1.25rem, 4vw, 3rem);
  padding-bottom: clamp(3rem, 6vw, 5rem);
}

.gallery-grid {
  columns: 3;
  column-gap: var(--gap-gallery);
}

@media (max-width: 960px) {
  .gallery-grid {
    columns: 2;
  }
}

@media (max-width: 560px) {
  .gallery-grid {
    columns: 1;
  }
}

/* Work item */
.work {
  break-inside: avoid;
  margin-bottom: var(--gap-gallery);
  position: relative;
  cursor: pointer;
  overflow: hidden;

  /* Scroll reveal initial state */
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.6s var(--ease-out),
    transform 0.6s var(--ease-out);
}

.work.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger delay applied by JS */

/* Placeholder */
.work-placeholder {
  width: 100%;
  background: var(--color-placeholder);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.work-placeholder::before {
  /* subtle texture */
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    45deg,
    transparent,
    transparent 20px,
    rgba(0,0,0,0.015) 20px,
    rgba(0,0,0,0.015) 21px
  );
}

.work-placeholder-label {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.85rem;
  color: #bbb;
  text-align: center;
  padding: 1rem;
  position: relative;
  z-index: 1;
  pointer-events: none;
}

/* Real image */
.work img {
  width: 100%;
  display: block;
  transition: transform 0.5s var(--ease-smooth);
}

/* Hover overlay */
.work-overlay {
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.88);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.work:hover .work-overlay {
  opacity: 1;
}

.work:hover img {
  transform: scale(1.02);
}

.work-overlay-title {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.05rem;
  color: var(--color-text);
  text-align: center;
  padding: 0.5rem 1rem;
}

/* ============================================================
   STORY CITY — Sequential Grid
   ============================================================ */
.story-intro {
  max-width: 640px;
  margin: 0 auto clamp(2rem, 4vw, 3.5rem);
  text-align: center;
  font-style: italic;
  color: var(--color-muted);
  font-size: 1.05rem;
  padding-inline: clamp(1.25rem, 4vw, 3rem);
}

.story-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap-gallery);
  padding-inline: clamp(1.25rem, 4vw, 3rem);
  padding-bottom: clamp(3rem, 6vw, 5rem);
}

@media (max-width: 960px) {
  .story-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 560px) {
  .story-grid {
    grid-template-columns: 1fr;
  }
}

.story-item {
  cursor: pointer;
  position: relative;
  overflow: hidden;

  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.6s var(--ease-out),
    transform 0.6s var(--ease-out);
}

.story-item.revealed {
  opacity: 1;
  transform: translateY(0);
}

.story-number {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  font-family: var(--font-sans);
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: #bbb;
  z-index: 2;
  background: var(--color-bg);
  padding: 0.25rem 0.5rem;
  line-height: 1;
}

.story-item .work-overlay {
  background: rgba(255,255,255,0.9);
  flex-direction: column;
  gap: 0.25rem;
}

.story-item .work-overlay-number {
  font-family: var(--font-sans);
  font-size: 0.55rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-muted);
}

/* ============================================================
   ABOUT PAGE
   ============================================================ */
.about-wrap {
  padding-inline: clamp(1.25rem, 4vw, 3rem);
  padding-bottom: clamp(3rem, 6vw, 5rem);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
  max-width: var(--size-max);
  margin-inline: auto;
}

@media (max-width: 800px) {
  .about-grid {
    grid-template-columns: 1fr;
  }
}

/* Photo placeholder */
.about-photo {
  width: 100%;
  aspect-ratio: 3 / 4;
  background: var(--color-placeholder);
  display: flex;
  align-items: center;
  justify-content: center;
  position: sticky;
  top: calc(var(--size-nav-h) + 2rem);
}

.about-photo-label {
  font-family: var(--font-serif);
  font-style: italic;
  color: #bbb;
  font-size: 0.9rem;
}

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

/* About text */
.about-content h2 {
  font-size: clamp(1.4rem, 3vw, 2rem);
  margin-bottom: 1.5rem;
  font-weight: 300;
}

.about-bio {
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: 2.5rem;
}

.about-section-title {
  font-family: var(--font-sans);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border);
}

.about-list {
  list-style: none;
  margin-bottom: 2.5rem;
}

.about-list li {
  display: flex;
  gap: 1.5rem;
  padding-block: 0.6rem;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.95rem;
  line-height: 1.5;
}

.about-list li:last-child {
  border-bottom: none;
}

.about-year {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  color: var(--color-muted);
  min-width: 4rem;
  padding-top: 0.15rem;
  flex-shrink: 0;
}

/* ============================================================
   CONTACT PAGE
   ============================================================ */
.contact-wrap {
  padding-inline: clamp(1.25rem, 4vw, 3rem);
  padding-bottom: clamp(3rem, 6vw, 5rem);
  max-width: 680px;
  margin-inline: auto;
}

.contact-intro {
  text-align: center;
  margin-bottom: 3rem;
  font-size: 1.05rem;
  color: var(--color-muted);
  font-style: italic;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

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

.form-field label {
  font-family: var(--font-sans);
  font-size: 0.62rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.form-field input,
.form-field textarea {
  width: 100%;
  padding: 0.85rem 0;
  border: none;
  border-bottom: 1px solid var(--color-border);
  background: transparent;
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--color-text);
  outline: none;
  transition: border-color var(--transition-fast);
  resize: none;
  -webkit-appearance: none;
  border-radius: 0;
}

.form-field input:focus,
.form-field textarea:focus {
  border-bottom-color: var(--color-text);
}

.form-field input::placeholder,
.form-field textarea::placeholder {
  color: #ccc;
}

.form-submit {
  margin-top: 0.5rem;
  align-self: flex-start;
  padding: 0.9rem 2.5rem;
  background: var(--color-text);
  color: var(--color-bg);
  border: none;
  font-family: var(--font-sans);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  cursor: pointer;
  transition: opacity var(--transition-fast);
}

.form-submit:hover {
  opacity: 0.75;
}

/* ============================================================
   LIGHTBOX
   ============================================================ */
#lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: var(--color-overlay);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 0.35s var(--ease-smooth),
    visibility 0.35s var(--ease-smooth);
}

#lightbox.open {
  opacity: 1;
  visibility: visible;
}

.lightbox-inner {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: min(90vw, 1000px);
  max-height: 92vh;
}

.lightbox-media {
  max-width: 100%;
  max-height: calc(92vh - 80px);
  object-fit: contain;
  display: block;
  opacity: 0;
  transform: scale(0.96);
  transition:
    opacity 0.3s var(--ease-smooth),
    transform 0.3s var(--ease-smooth);
}

#lightbox.open .lightbox-media {
  opacity: 1;
  transform: scale(1);
}

/* Placeholder inside lightbox */
.lightbox-placeholder {
  background: var(--color-placeholder);
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: min(60vw, 600px);
  min-height: min(60vh, 500px);
  max-width: min(80vw, 800px);
  opacity: 0;
  transform: scale(0.96);
  transition:
    opacity 0.3s var(--ease-smooth),
    transform 0.3s var(--ease-smooth);
}

#lightbox.open .lightbox-placeholder {
  opacity: 1;
  transform: scale(1);
}

.lightbox-placeholder-text {
  font-family: var(--font-serif);
  font-style: italic;
  color: #bbb;
  font-size: 1rem;
}

.lightbox-caption {
  margin-top: 1rem;
  font-family: var(--font-serif);
  font-style: italic;
  color: rgba(255,255,255,0.7);
  font-size: 0.95rem;
  text-align: center;
  letter-spacing: 0.02em;
}

/* Close button */
.lightbox-close {
  position: fixed;
  top: 1.25rem;
  right: 1.5rem;
  background: none;
  border: none;
  color: rgba(255,255,255,0.7);
  font-size: 1.75rem;
  cursor: pointer;
  padding: 0.5rem;
  line-height: 1;
  transition: color var(--transition-fast);
  z-index: 201;
}

.lightbox-close:hover {
  color: #fff;
}

/* Prev / Next arrows */
.lightbox-prev,
.lightbox-next {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: 1px solid rgba(255,255,255,0.3);
  color: rgba(255,255,255,0.7);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  cursor: pointer;
  transition:
    color var(--transition-fast),
    border-color var(--transition-fast),
    background var(--transition-fast);
}

.lightbox-prev { left: 1.25rem; }
.lightbox-next { right: 1.25rem; }

.lightbox-prev:hover,
.lightbox-next:hover {
  color: #fff;
  border-color: rgba(255,255,255,0.7);
  background: rgba(255,255,255,0.05);
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================================
   RESPONSIVE TWEAKS
   ============================================================ */
@media (max-width: 720px) {
  .nav-links {
    display: none;
  }

  .nav-hamburger {
    display: flex;
  }

  .lightbox-prev { left: 0.5rem; }
  .lightbox-next { right: 0.5rem; }
}