/*
  Portfolio Central Design System
  JC Niñonuevo IT Portfolio
*/

/* ── Helvetica Neue Custom Font Family ── */
@font-face { font-family: 'Helvetica Neue'; src: url('fonts/HelveticaNeueThin.otf') format('opentype'); font-weight: 100; font-style: normal; font-display: swap; }
@font-face { font-family: 'Helvetica Neue'; src: url('fonts/HelveticaNeueThinItalic.otf') format('opentype'); font-weight: 100; font-style: italic; font-display: swap; }
@font-face { font-family: 'Helvetica Neue'; src: url('fonts/HelveticaNeueUltraLight.otf') format('opentype'); font-weight: 200; font-style: normal; font-display: swap; }
@font-face { font-family: 'Helvetica Neue'; src: url('fonts/HelveticaNeueUltraLightItalic.otf') format('opentype'); font-weight: 200; font-style: italic; font-display: swap; }
@font-face { font-family: 'Helvetica Neue'; src: url('fonts/HelveticaNeueLight.otf') format('opentype'); font-weight: 300; font-style: normal; font-display: swap; }
@font-face { font-family: 'Helvetica Neue'; src: url('fonts/HelveticaNeueLightItalic.otf') format('opentype'); font-weight: 300; font-style: italic; font-display: swap; }
@font-face { font-family: 'Helvetica Neue'; src: url('fonts/HelveticaNeueRoman.otf') format('opentype'); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: 'Helvetica Neue'; src: url('fonts/HelveticaNeueItalic.ttf') format('truetype'); font-weight: 400; font-style: italic; font-display: swap; }
@font-face { font-family: 'Helvetica Neue'; src: url('fonts/HelveticaNeueMedium.otf') format('opentype'); font-weight: 500; font-style: normal; font-display: swap; }
@font-face { font-family: 'Helvetica Neue'; src: url('fonts/HelveticaNeueMediumItalic.otf') format('opentype'); font-weight: 500; font-style: italic; font-display: swap; }
@font-face { font-family: 'Helvetica Neue'; src: url('fonts/HelveticaNeueBold.otf') format('opentype'); font-weight: 700; font-style: normal; font-display: swap; }
@font-face { font-family: 'Helvetica Neue'; src: url('fonts/HelveticaNeueBoldItalic.otf') format('opentype'); font-weight: 700; font-style: italic; font-display: swap; }
@font-face { font-family: 'Helvetica Neue'; src: url('fonts/HelveticaNeueHeavy.otf') format('opentype'); font-weight: 800; font-style: normal; font-display: swap; }
@font-face { font-family: 'Helvetica Neue'; src: url('fonts/HelveticaNeueHeavyItalic.otf') format('opentype'); font-weight: 800; font-style: italic; font-display: swap; }
@font-face { font-family: 'Helvetica Neue'; src: url('fonts/HelveticaNeueBlack.otf') format('opentype'); font-weight: 900; font-style: normal; font-display: swap; }
@font-face { font-family: 'Helvetica Neue'; src: url('fonts/HelveticaNeueBlackItalic.otf') format('opentype'); font-weight: 900; font-style: italic; font-display: swap; }

/* ── Design Tokens (Pure Light Mode Redesign) ── */
:root {
  --bg: #EEF2F7;             /* Soft professional layered background */
  --bg-alt: #F8FAFC;         /* Alternate section background */
  --surface: #FFFFFF;        /* Content card background */
  --surface-raised: #EFF6FF; /* Highlight card background */
  --border: #DCE3EA;         /* Visible clean border */
  --border-strong: #CBD5E1;  /* Strong border for cards and pills */
  --border-subtle: #E2E8F0;  /* Subtle interior divider */
  --text-main: #0F172A;      /* Deep Slate headings */
  --text-body: #334155;      /* Slate-800 high-contrast body */
  --text-muted: #475569;     /* Slate-700 secondary labels */
  --text-faint: #64748B;     /* Slate-600 muted captions */
  --accent: #2563EB;         /* Confident primary blue accent */
  --accent-teal: #0F766E;    /* Professional secondary teal accent */
  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 20px;
  --radius-xl: 24px;
}

html { scroll-behavior: smooth; background: var(--bg); }

body {
  background: var(--bg);
  color: var(--text-body);
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  letter-spacing: 0;
  line-height: 1.65;
  overflow-x: hidden;
}

::selection { background: var(--accent); color: #FFFFFF; }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-alt); }
::-webkit-scrollbar-thumb { background: #CBD5E1; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #94A3B8; }

/* ── Utility ── */
img { -webkit-user-drag: none; user-drag: none; }
section[id] { scroll-margin-top: 64px; }
@media (min-width: 768px) { section[id] { scroll-margin-top: 80px; } }

/* ── Focus ── */
:focus-visible { outline: 2px solid rgba(37,99,235,0.6); outline-offset: 3px; border-radius: 6px; }

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

/* ── GSAP hide ── */
.gsap-hero-item, .gsap-header-item, .gsap-reveal { opacity: 0; }

/* ── Gallery Grid ── */
.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 1024px) { .gallery-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .gallery-grid { grid-template-columns: 1fr; } }

.gallery-item {
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  border: 1px solid var(--border-strong);
  box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05);
}
.gallery-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 20px -3px rgba(0,0,0,0.08), 0 4px 6px -2px rgba(0,0,0,0.05);
  border-color: var(--accent);
}
.gallery-item img { filter: brightness(0.98); transition: filter 0.3s ease; width: 100%; height: auto; display: block; }
.gallery-item:hover img { filter: brightness(1.02); }

/* ── Mobile Menu ── */
#mobile-menu { transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease; }
#mobile-menu.closed { max-height: 0; opacity: 0; overflow: hidden; pointer-events: none; }
#mobile-menu.open { max-height: 600px; opacity: 1; pointer-events: auto; }

/* ── Form Inputs (Improved Contrast) ── */
input, textarea {
  background: #FFFFFF;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-family: inherit;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}
input:focus, textarea:focus {
  background: #FFFFFF;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.15);
  outline: none;
}
input::placeholder, textarea::placeholder { color: #94A3B8; }

/* ── Premium Unified Cards ── */
.project-card, .skill-category-card, .experience-card, .research-focus-card, .learning-progress-card, .video-card,
.profile-card, .contact-channel, #contact-form-col {
  background: var(--surface) !important;
  border: 1px solid var(--border-strong) !important;
  box-shadow: 0 10px 25px -18px rgba(15,23,42,0.32), 0 4px 10px -8px rgba(15,23,42,0.18) !important;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

.project-card:hover, .skill-category-card:hover, .experience-card:hover, .research-focus-card:hover, .learning-progress-card:hover, .video-card:hover,
.profile-card:hover, .contact-channel:hover {
  transform: translateY(-4px) !important;
  box-shadow: 0 24px 42px -24px rgba(15,23,42,0.38), 0 10px 18px -14px rgba(15,23,42,0.28) !important;
  border-color: #94A3B8 !important;
}

/* ── Tool Badges (High Contrast) ── */
.tool-badge {
  background: var(--surface) !important;
  border: 1px solid var(--border-strong) !important;
  box-shadow: 0 2px 4px -1px rgba(15,23,42,0.03) !important;
  transition: border-color 0.25s ease, background-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease !important;
}
.tool-badge:hover {
  transform: translateY(-2px) !important;
  border-color: var(--accent) !important;
  box-shadow: 0 6px 12px -2px rgba(15,23,42,0.06) !important;
}

/* ── Mouse Glare Effect ── */
.research-focus-card, .experience-card,
.learning-progress-card, .project-card, .skill-category-card {
  position: relative;
  overflow: hidden;
}
.research-focus-card::before,
.experience-card::before, .learning-progress-card::before,
.project-card::before, .skill-category-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(350px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(37,99,235,0.05), transparent 75%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
  z-index: 5;
  border-radius: inherit;
}
.research-focus-card:hover::before,
.experience-card:hover::before, .learning-progress-card:hover::before,
.project-card:hover::before, .skill-category-card:hover::before { opacity: 1; }

/* ── Tech Dot Grid Background ── */
.section-grid-bg {
  background-image: radial-gradient(rgba(15,23,42,0.07) 1px, transparent 1px);
  background-size: 24px 24px;
}

/* ── Full-site Light Portfolio Polish ── */
#main-nav .nav-link {
  position: relative;
}
#main-nav .nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -8px;
  height: 2px;
  border-radius: 999px;
  background: var(--accent);
  opacity: 0;
  transform: scaleX(0.4);
  transition: opacity 0.2s ease, transform 0.2s ease;
}
#main-nav .nav-link:hover::after,
#main-nav .nav-link.active::after {
  opacity: 1;
  transform: scaleX(1);
}

section#home {
  background:
    linear-gradient(135deg, rgba(248,250,252,0.95) 0%, rgba(224,242,254,0.9) 48%, rgba(236,253,245,0.85) 100%),
    radial-gradient(circle at 18% 18%, rgba(37,99,235,0.08), transparent 28%),
    radial-gradient(circle at 82% 30%, rgba(15,118,110,0.08), transparent 30%) !important;
}

section#about {
  background:
    linear-gradient(180deg, #F8FAFC 0%, #EEF2F7 100%) !important;
}

section#skills {
  background-color: #EEF2F7 !important;
}

section#projects {
  background:
    linear-gradient(180deg, #F8FAFC 0%, #F1F5F9 100%) !important;
}

section#research {
  background-color: #EFF6FF !important;
}

section#experience {
  background:
    linear-gradient(180deg, #EEF2F7 0%, #F1F5F9 100%) !important;
}

section#tools-learning {
  background:
    linear-gradient(180deg, #F8FAFC 0%, #ECFDF5 160%) !important;
}

section#contact {
  background:
    linear-gradient(135deg, #F1F5F9 0%, #EFF6FF 52%, #F0FDFA 100%) !important;
}

section[id] h1,
section[id] h2,
section[id] h3 {
  color: var(--text-main);
  letter-spacing: 0;
}

section[id] p,
section[id] li {
  color: var(--text-body);
}

.text-text-muted,
.text-text-faint {
  color: var(--text-muted) !important;
}

.project-card {
  border-top-width: 4px !important;
}
.project-card:nth-child(1) { border-top-color: #2563EB !important; }
.project-card:nth-child(2) { border-top-color: #0F766E !important; }
.project-card:nth-child(3) { border-top-color: #7C3AED !important; }
.project-card:nth-child(4) { border-top-color: #0891B2 !important; }
.project-card:nth-child(5) { border-top-color: #D97706 !important; }
.project-card:nth-child(6) { border-top-color: #16A34A !important; }

.project-card a[href],
#contact-form-col button,
#nav-cta a {
  box-shadow: 0 10px 18px -14px rgba(15,23,42,0.45);
}

.project-card a[href]:first-child {
  padding: 0.65rem 0.95rem;
  border: 1px solid #BFDBFE;
  border-radius: 999px;
  background: #EFF6FF;
  text-decoration: none !important;
}

.project-card a[href]:first-child:hover {
  background: #DBEAFE;
  border-color: #93C5FD;
}

.project-card span[class*="bg-slate-100"],
.experience-card span[class*="bg-slate-100"],
.learning-progress-card span,
.tool-badge,
#lightbox-counter {
  border-color: var(--border-strong) !important;
}

.project-card span[class*="bg-slate-100"] {
  font-weight: 700 !important;
}

#page-header {
  background:
    linear-gradient(135deg, #F8FAFC 0%, #E0F2FE 58%, #ECFDF5 100%);
  border-bottom: 1px solid var(--border-strong) !important;
}

#page-header + section {
  background: var(--bg);
}

.gallery-grid {
  align-items: stretch;
}

.gallery-item {
  background: #FFFFFF;
  border-color: var(--border-strong);
  box-shadow: 0 16px 32px -24px rgba(15,23,42,0.4), 0 6px 12px -10px rgba(15,23,42,0.22);
}

.gallery-item:hover {
  box-shadow: 0 26px 44px -26px rgba(15,23,42,0.45), 0 12px 20px -16px rgba(15,23,42,0.3);
}

#lightbox,
#video-lightbox {
  background: rgba(15, 23, 42, 0.45) !important;
}

#lightbox > div,
#video-lightbox > div {
  box-shadow: 0 30px 80px -30px rgba(15,23,42,0.55) !important;
}

/* ── Featured Project Details Modal ── */
.project-details-overlay {
  position: fixed;
  inset: 0;
  z-index: 9998;
  display: none;
  align-items: center;
  justify-content: center;
  padding: clamp(1rem, 3vw, 2rem);
  background: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(8px);
}

.project-details-overlay.hidden {
  display: none !important;
}

.project-details-overlay.is-open {
  display: flex !important;
}

.project-details-panel {
  width: min(960px, 100%);
  max-height: min(88vh, 920px);
  background: #FFFFFF;
  border: 1px solid var(--border-strong);
  border-radius: 20px;
  box-shadow: 0 30px 80px -30px rgba(15,23,42,0.55), 0 12px 28px -20px rgba(15,23,42,0.35);
  overflow: hidden;
}

.project-details-scroll {
  max-height: min(88vh, 920px);
  overflow-y: auto;
  background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
}

.project-details-header {
  position: sticky;
  top: 0;
  z-index: 2;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: clamp(1.25rem, 3vw, 2rem);
  background: rgba(255,255,255,0.96);
  border-bottom: 1px solid var(--border-subtle);
  backdrop-filter: blur(12px);
}

.project-details-heading {
  min-width: 0;
}

.project-details-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.9rem;
}

.project-details-badge,
.project-details-pill-group span {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: #F8FAFC;
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 700;
  line-height: 1;
}

.project-details-badge {
  padding: 0.5rem 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0;
}

.project-details-badge-type {
  background: #EFF6FF;
  border-color: #BFDBFE;
  color: #1D4ED8;
}

.project-details-badge-status {
  background: #F0FDFA;
  border-color: #99F6E4;
  color: #0F766E;
}

.project-details-title {
  color: var(--text-main);
  font-size: clamp(1.55rem, 4vw, 2.35rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: 0;
  margin: 0;
}

.project-details-summary {
  color: var(--text-muted);
  font-size: 0.98rem;
  line-height: 1.65;
  margin-top: 0.8rem;
  max-width: 48rem;
}

.project-details-close {
  position: sticky;
  top: 1rem;
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: #FFFFFF;
  color: var(--text-muted);
  box-shadow: 0 10px 20px -16px rgba(15,23,42,0.45);
  transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.project-details-close:hover {
  color: var(--text-main);
  background: #F1F5F9;
  border-color: #94A3B8;
  transform: translateY(-1px);
}

.project-details-body {
  padding: clamp(1.25rem, 3vw, 2rem);
}

.project-details-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.project-details-meta span {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  min-width: 0;
  padding: 0.95rem;
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  background: #FFFFFF;
  color: var(--text-body);
  font-size: 0.82rem;
  line-height: 1.45;
}

.project-details-meta strong,
.project-details-section-label {
  color: var(--text-faint);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.project-details-section-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.project-details-section {
  margin-top: 1rem;
}

.project-details-card {
  padding: 1.1rem;
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  background: #FFFFFF;
  box-shadow: 0 12px 24px -22px rgba(15,23,42,0.45);
}

.project-details-section p {
  margin-top: 0.45rem;
  color: var(--text-body);
  font-size: 0.93rem;
  line-height: 1.72;
}

.project-details-list {
  display: grid;
  gap: 0.55rem;
  margin-top: 0.6rem;
  color: var(--text-body);
  font-size: 0.9rem;
  line-height: 1.55;
}

.project-details-list li {
  position: relative;
  padding-left: 1rem;
}

.project-details-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 0.35rem;
  height: 0.35rem;
  border-radius: 999px;
  background: var(--accent);
}

.project-details-pill-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.7rem;
}

.project-details-pill-group span {
  padding: 0.5rem 0.7rem;
  font-family: inherit;
  background: #F1F5F9;
  color: #334155;
}

.project-details-footer {
  position: sticky;
  bottom: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 0.65rem;
  padding: 1rem clamp(1.25rem, 3vw, 2rem);
  background: rgba(255,255,255,0.96);
  border-top: 1px solid var(--border-subtle);
  backdrop-filter: blur(12px);
}

.project-details-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.6rem;
  padding: 0.7rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  font-size: 0.78rem;
  font-weight: 800;
  line-height: 1.1;
  text-align: center;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.project-details-action:hover {
  transform: translateY(-1px);
}

.project-details-action-secondary {
  background: #FFFFFF;
  color: var(--text-main);
}

.project-details-action-secondary:hover {
  background: #F1F5F9;
}

.project-details-action-muted {
  background: #F8FAFC;
  color: var(--text-faint);
  cursor: not-allowed;
}

.project-details-action-primary {
  background: #2563EB;
  border-color: #2563EB;
  color: #FFFFFF;
  box-shadow: 0 12px 22px -16px rgba(37,99,235,0.55);
}

.project-details-action-primary:hover {
  background: #1D4ED8;
  border-color: #1D4ED8;
}

@media (max-width: 760px) {
  .project-details-overlay {
    align-items: flex-start;
    padding: 0.8rem;
  }

  .project-details-panel,
  .project-details-scroll {
    max-height: calc(100vh - 1.6rem);
    border-radius: 18px;
  }

  .project-details-header {
    padding: 1rem;
  }

  .project-details-title {
    font-size: 1.45rem;
  }

  .project-details-summary {
    font-size: 0.9rem;
  }

  .project-details-body {
    padding: 1rem;
  }

  .project-details-meta,
  .project-details-section-grid {
    grid-template-columns: 1fr;
  }

  .project-details-footer {
    justify-content: stretch;
    padding: 0.9rem 1rem;
  }

  .project-details-action {
    flex: 1 1 100%;
  }
}

input, textarea {
  min-height: 44px;
}

#site-footer {
  background: #E2E8F0 !important;
}

/* ── View Transitions ── */
@view-transition { navigation: auto; }
@keyframes fade-in { from { opacity: 0; transform: translateY(10px); } }
@keyframes fade-out { to { opacity: 0; transform: translateY(-10px); } }
::view-transition-old(root) { animation: 180ms cubic-bezier(0.4,0,0.2,1) both fade-out; }
::view-transition-new(root) { animation: 220ms cubic-bezier(0.4,0,0.2,1) both fade-in; }

/* ── Desktop overrides ── */
@media (min-width: 1024px) {
  section#home { padding-top: 7rem !important; }
  section#home > div.w-full { padding-top: 4rem !important; }
}