/* ===================================================================
   PORTFOLIO — Mono / Whitespace Design System
   Francis Aaron R. Ruzgal
   =================================================================== */

/* ---------- Google Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ---------- CSS Custom Properties ---------- */
:root {
  /* Colors — mono palette */
  --bg-primary: #FAFAFA;
  --bg-secondary: #F5F5F0;
  --bg-stripe-a: #FAFAFA;
  --bg-stripe-b: #F8F8F8;
  --text-primary: #1A1A1A;
  --text-secondary: #555555;
  --text-muted: #999999;
  --border-color: #E0E0E0;
  --border-light: #EEEEEE;
  --accent: #1A1A1A;
  --white: #FFFFFF;
  --skeleton-base: #EEEEEE;
  --skeleton-shine: #F8F8F8;

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 5rem;
  --space-3xl: 8rem;

  /* Layout */
  --max-width: 1000px;
  --section-padding: clamp(1.5rem, 3vw, 2.5rem) clamp(1.25rem, 5vw, 3rem);

  /* Transitions */
  --ease-out: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: 200ms var(--ease-smooth);
  --transition-base: 350ms var(--ease-smooth);
  --transition-slow: 600ms var(--ease-out);
}

/* ---------- Reset ---------- */
*,
*::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-primary);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-primary);
  background: var(--bg-primary);
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

/* ---------- Animated Background (Diagonal Stripes) ---------- */
.bg-animated {
  position: fixed;
  inset: 0;
  z-index: -1;
  background: var(--bg-primary);
  background: linear-gradient(
    135deg,
    var(--bg-stripe-a) 25%,
    var(--bg-stripe-b) 25%,
    var(--bg-stripe-b) 50%,
    var(--bg-stripe-a) 50%,
    var(--bg-stripe-a) 75%,
    var(--bg-stripe-b) 75%,
    var(--bg-stripe-b)
  );
  background-size: 40px 40px;
  animation: bgMove 4s linear infinite;
}

@keyframes bgMove {
  0% { background-position: 0 0; }
  100% { background-position: 40px 40px; }
}

/* ---------- Page Loader ---------- */
.page-loader {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: var(--bg-primary);
  display: flex;
  justify-content: center;
  align-items: center;
  transition: opacity 0.5s var(--ease-smooth), visibility 0.5s;
}

.page-loader.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader-wrapper {
  width: 200px;
  height: 80px;
  position: relative;
  z-index: 1;
}

.loader-circle {
  width: 20px;
  height: 20px;
  position: absolute;
  border-radius: 50%;
  background-color: var(--text-primary);
  left: 15%;
  transform-origin: 50%;
  animation: loaderBounce 0.5s alternate infinite ease;
}

@keyframes loaderBounce {
  0% {
    top: 60px;
    height: 5px;
    border-radius: 50px 50px 25px 25px;
    transform: scaleX(1.7);
  }
  40% {
    height: 20px;
    border-radius: 50%;
    transform: scaleX(1);
  }
  100% {
    top: 0%;
  }
}

.loader-circle:nth-child(2) {
  left: 45%;
  animation-delay: 0.2s;
}

.loader-circle:nth-child(3) {
  left: auto;
  right: 15%;
  animation-delay: 0.3s;
}

.loader-shadow {
  width: 20px;
  height: 4px;
  border-radius: 50%;
  background-color: rgba(0, 0, 0, 0.15);
  position: absolute;
  top: 65px;
  transform-origin: 50%;
  z-index: -1;
  left: 15%;
  filter: blur(1px);
  animation: loaderShadow 0.5s alternate infinite ease;
}

@keyframes loaderShadow {
  0% {
    transform: scaleX(1.5);
  }
  40% {
    transform: scaleX(1);
    opacity: 0.7;
  }
  100% {
    transform: scaleX(0.2);
    opacity: 0.4;
  }
}

.loader-shadow:nth-child(4) {
  left: 45%;
  animation-delay: 0.2s;
}

.loader-shadow:nth-child(5) {
  left: auto;
  right: 15%;
  animation-delay: 0.3s;
}

/* ---------- Navigation ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--space-md) clamp(1.25rem, 5vw, 3rem);
  display: flex;
  justify-content: space-between;
  align-items: center;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(250, 250, 250, 0.85);
  border-bottom: 1px solid var(--border-light);
  transition: var(--transition-base);
}

.nav-logo {
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

.nav-logo span {
  font-weight: 300;
  color: var(--text-muted);
}

.nav-links {
  display: flex;
  gap: var(--space-lg);
}

.nav-links a {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  position: relative;
  transition: color var(--transition-fast);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--text-primary);
  transition: width var(--transition-base);
}

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

.nav-links a:hover::after {
  width: 100%;
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text-primary);
  transition: var(--transition-fast);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(4px, 5px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(4px, -5px);
}

/* ---------- Sections ---------- */
.section {
  padding: var(--section-padding);
  max-width: var(--max-width);
  margin: 0 auto;
}

/* ---------- Main Content Grid (About + Awards + Skills) ---------- */
.main-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 5vw, 3rem);
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-lg) var(--space-2xl);
  padding-bottom: var(--space-lg);
}

.main-content .section {
  padding: 0;
  max-width: none;
}

.main-left {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.main-left .section + .section {
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-light);
}

.main-right {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.section-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.section-label::before {
  content: '';
  display: inline-block;
  width: 20px;
  height: 1px;
  background: var(--text-muted);
}

/* ---------- Hero Section ---------- */
.hero {
  display: flex;
  align-items: center;
  padding-top: 80px;
  padding-bottom: var(--space-md);
}

.hero-content {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: var(--space-xl);
  align-items: center;
  width: 100%;
}

.hero-photo-wrapper {
  position: relative;
}

.hero-photo {
  width: 140px;
  height: 140px;
  border-radius: 12px;
  object-fit: cover;
  filter: grayscale(20%);
  transition: filter var(--transition-base);
  border: 1px solid var(--border-color);
}

.hero-photo:hover {
  filter: grayscale(0%);
}

.hero-photo-wrapper::after {
  content: '';
  position: absolute;
  inset: 8px -8px -8px 8px;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  z-index: -1;
  transition: var(--transition-base);
}

.hero-photo-wrapper:hover::after {
  inset: 4px -4px -4px 4px;
}

.hero-info h1 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.15;
  margin-bottom: 4px;
  color: var(--text-primary);
}

.hero-location {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.82rem;
  font-weight: 400;
  color: var(--text-secondary);
  margin-bottom: 2px;
}

.hero-location svg {
  width: 14px;
  height: 14px;
  opacity: 0.6;
}

.hero-tagline {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

.hero-socials {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.hero-socials a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-secondary);
  transition: var(--transition-fast);
}

.hero-socials a:hover {
  border-color: var(--text-primary);
  color: var(--text-primary);
  transform: translateY(-2px);
}

.hero-socials a svg {
  width: 16px;
  height: 16px;
}

/* ---------- About Section ---------- */
.about-content {
  max-width: none;
}

.about-content p {
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
}

.about-content p:last-child {
  margin-bottom: 0;
}

/* ---------- Awards Section ---------- */
.award-card {
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: var(--space-md);
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(10px);
  max-width: none;
  transition: var(--transition-base);
}

.award-card:hover {
  border-color: var(--text-muted);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.04);
}

.award-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: var(--bg-secondary);
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: var(--space-md);
}

.award-badge svg {
  width: 12px;
  height: 12px;
}

.award-card h3 {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.35;
  margin-bottom: var(--space-xs);
}

.award-card .award-org {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: var(--space-sm);
}

.award-card .award-desc {
  font-size: 0.82rem;
  line-height: 1.65;
  color: var(--text-secondary);
}

/* ---------- Skills Section ---------- */
.skills-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  max-width: none;
}

.skill-category h3 {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--space-sm);
  padding-bottom: 4px;
  border-bottom: 1px solid var(--border-light);
}

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

.skill-tag {
  font-size: 0.76rem;
  font-weight: 500;
  color: var(--text-primary);
  padding: 4px 12px;
  border: 1px solid var(--border-color);
  border-radius: 100px;
  transition: var(--transition-fast);
  cursor: default;
}

.skill-tag:hover {
  border-color: var(--text-primary);
  background: var(--text-primary);
  color: var(--white);
}

/* ---------- Portfolio / Gallery Section ---------- */
.portfolio-section {
  padding: var(--space-md) 0 var(--space-lg) 0;
  max-width: 100%;
}

.portfolio-header {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 5vw, 3rem);
  margin-bottom: var(--space-md);
}

.gallery-track-container {
  position: relative;
  overflow: hidden;
  cursor: grab;
  padding: var(--space-sm) 0 var(--space-md) 0;
}

.gallery-track-container:active {
  cursor: grabbing;
}

.gallery-track {
  display: flex;
  gap: var(--space-lg);
  padding: 0 clamp(1.25rem, 5vw, 3rem);
  transition: none;
  will-change: transform;
  user-select: none;
  -webkit-user-select: none;
}

.gallery-item {
  flex-shrink: 0;
  width: 300px;
  height: 370px;
  border-radius: 10px;
  overflow: hidden;
  position: relative;
  border: 1px solid var(--border-color);
  background: var(--skeleton-base);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.gallery-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.06);
}

.gallery-item canvas {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  pointer-events: none;
}

/* Transparent click shield over images */
.gallery-item::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 2;
  cursor: pointer;
}

/* View indicator on hover */
.gallery-item .view-indicator {
  position: absolute;
  bottom: 16px;
  right: 16px;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  padding: 8px 14px;
  border-radius: 8px;
  opacity: 0;
  transform: translateY(6px);
  transition: var(--transition-fast);
  pointer-events: none;
}

.gallery-item .view-indicator svg {
  width: 14px;
  height: 14px;
}

.gallery-item:hover .view-indicator {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Skeleton Loaders ---------- */
.skeleton {
  position: relative;
  overflow: hidden;
  background: var(--skeleton-base);
}

.skeleton::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent,
    var(--skeleton-shine),
    transparent
  );
  animation: shimmer 1.8s infinite;
}

@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.skeleton-text {
  height: 14px;
  border-radius: 6px;
  margin-bottom: 10px;
  width: 80%;
}

.skeleton-text.short {
  width: 50%;
}

.skeleton-photo {
  width: 140px;
  height: 140px;
  border-radius: 12px;
}

.skeleton-gallery-item {
  flex-shrink: 0;
  width: 340px;
  height: 420px;
  border-radius: 12px;
}

/* ---------- Lightbox ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0, 0, 0, 0.92);
  backdrop-filter: blur(20px);
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.lightbox.active {
  opacity: 1;
  visibility: visible;
}

.lightbox-canvas {
  max-width: 90vw;
  max-height: 85vh;
  border-radius: 8px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
  transform: scale(0.92);
  transition: transform var(--transition-base);
}

.lightbox.active .lightbox-canvas {
  transform: scale(1);
}

.lightbox-close {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  color: white;
  cursor: pointer;
  transition: var(--transition-fast);
  font-size: 0;
}

.lightbox-close:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.4);
}

.lightbox-close svg {
  width: 18px;
  height: 18px;
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  color: white;
  cursor: pointer;
  transition: var(--transition-fast);
}

.lightbox-nav:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.4);
}

.lightbox-nav svg {
  width: 18px;
  height: 18px;
}

.lightbox-prev {
  left: 24px;
}

.lightbox-next {
  right: 24px;
}

.lightbox-counter {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.8rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.6);
  letter-spacing: 0.1em;
}

/* ---------- Footer ---------- */
.footer {
  padding: var(--space-lg) clamp(1.25rem, 5vw, 3rem);
  text-align: center;
  border-top: 1px solid var(--border-light);
}

.footer p {
  font-size: 0.78rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  margin-bottom: var(--space-md);
}

.footer-links a {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

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

/* ---------- Scroll Reveal Animations ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

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

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ---------- Print Protection ---------- */
@media print {
  .portfolio-section,
  .lightbox,
  .gallery-track-container {
    display: none !important;
  }

  body::after {
    content: 'Portfolio designs are not available in print.';
    display: block;
    padding: 2rem;
    text-align: center;
    color: #999;
  }
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 70%;
    max-width: 300px;
    height: 100vh;
    background: rgba(250, 250, 250, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--space-xl);
    transition: right var(--transition-base);
    border-left: 1px solid var(--border-light);
  }

  .nav-links.open {
    right: 0;
  }

  .nav-toggle {
    display: flex;
  }

  .main-content {
    grid-template-columns: 1fr;
  }

  .hero-content {
    grid-template-columns: 1fr;
    gap: var(--space-md);
    text-align: center;
    justify-items: center;
  }

  .hero-socials {
    justify-content: center;
  }

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

  .gallery-item,
  .skeleton-gallery-item {
    width: 260px;
    height: 320px;
  }

  .lightbox-prev {
    left: 12px;
  }

  .lightbox-next {
    right: 12px;
  }
}

@media (max-width: 480px) {
  .hero-photo {
    width: 120px;
    height: 120px;
  }

  .skeleton-photo {
    width: 120px;
    height: 120px;
  }

  .hero-photo-wrapper::after {
    display: none;
  }

  .gallery-item,
  .skeleton-gallery-item {
    width: 220px;
    height: 270px;
  }
}

/* ---------- Selection Color ---------- */
::selection {
  background: var(--text-primary);
  color: var(--white);
}

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}