/* =============================================
   master.css — Sergio Banuelos Portfolio
   ============================================= */

/* Universal Selector */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* CSS Variables */
:root {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-card: #1c2333;
  --accent-cyan: #00b4d8;
  --accent-light: #90e0ef;
  --text-primary: #e6edf3;
  --text-muted: #8b949e;
  --border-color: #30363d;
  --font-heading: 'Raleway', sans-serif;
  --font-body: 'Lato', sans-serif;
  --font-mono: 'Source Code Pro', monospace;
}

/* =============================================
   Element Selectors
   ============================================= */

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  min-height: 100vh;
}

h1 {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -1px;
  color: var(--text-primary);
  line-height: 1.1;
}

h2 {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent-cyan);
  margin-bottom: 1rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid var(--accent-cyan);
}

h3 {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.3rem;
}

h4 {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent-light);
  margin-bottom: 0.3rem;
}

h5 {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 0.5rem;
}

h6 {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 400;
}

p {
  margin-bottom: 1rem;
  color: var(--text-primary);
}

a {
  color: var(--accent-cyan);
  text-decoration: none;
  transition: color 0.2s ease;
}

ul, ol {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

li {
  margin-bottom: 0.4rem;
  color: var(--text-primary);
}

hr {
  border: none;
  border-top: 1px solid var(--border-color);
  margin: 2rem 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

th {
  background-color: var(--accent-cyan);
  color: var(--bg-primary);
  font-family: var(--font-heading);
  font-weight: 700;
  padding: 0.75rem 1rem;
  text-align: left;
}

td {
  padding: 0.65rem 1rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
}

caption {
  font-family: var(--font-heading);
  font-size: 1rem;
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: 0.5rem;
  text-align: left;
}

strong {
  color: var(--accent-light);
  font-weight: 700;
}

em {
  font-style: italic;
  color: var(--text-muted);
}

mark {
  background-color: rgba(0, 180, 216, 0.25);
  color: var(--accent-cyan);
  padding: 0 4px;
  border-radius: 3px;
}

header {
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 2.5rem 2rem 2rem;
}

footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 1.5rem 2rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: 4rem;
}

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 3rem 2rem;
}

section {
  margin-bottom: 3rem;
}

article {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.5rem;
  margin-bottom: 1.2rem;
  transition: border-color 0.2s ease;
}

nav {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

form {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 2rem;
}

input, textarea, select {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  padding: 0.6rem 0.9rem;
  width: 100%;
  margin-top: 0.3rem;
  transition: border-color 0.2s ease;
}

textarea {
  resize: vertical;
  min-height: 120px;
}

label {
  display: block;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.2rem;
  font-size: 0.9rem;
}

audio, video {
  display: block;
  margin: 1rem 0;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

video {
  width: 100%;
  max-width: 640px;
}

img {
  border-radius: 8px;
  border: 2px solid var(--accent-cyan);
}

span {
  font-family: var(--font-mono);
}

/* =============================================
   Class Selectors
   ============================================= */

.hero-name {
  font-size: 3.5rem;
  background: linear-gradient(135deg, var(--text-primary), var(--accent-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-family: var(--font-mono);
  color: var(--accent-cyan);
  font-size: 1rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-top: 0.5rem;
}

.contact-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-top: 1rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.contact-bar a {
  color: var(--text-muted);
  transition: color 0.2s;
}

.skill-badge {
  display: inline-block;
  background-color: rgba(0, 180, 216, 0.12);
  border: 1px solid rgba(0, 180, 216, 0.35);
  color: var(--accent-cyan);
  border-radius: 20px;
  padding: 0.25rem 0.8rem;
  font-size: 0.82rem;
  font-family: var(--font-mono);
  margin: 0.2rem;
}

.job-meta {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.date-badge {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  background-color: rgba(0, 180, 216, 0.1);
  color: var(--accent-cyan);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  display: inline-block;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--accent-cyan);
  margin-bottom: 1.2rem;
  display: block;
}

.form-group {
  margin-bottom: 1.2rem;
}

.radio-group {
  display: flex;
  gap: 1.5rem;
  margin-top: 0.4rem;
  flex-wrap: wrap;
}

.radio-group label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 400;
  cursor: pointer;
}

.radio-group input[type="radio"] {
  width: auto;
  margin: 0;
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.media-section {
  margin-bottom: 2rem;
}

.media-label {
  font-family: var(--font-heading);
  font-size: 1rem;
  color: var(--accent-light);
  margin-bottom: 0.5rem;
}

.cover-letter-body {
  max-width: 700px;
  line-height: 1.9;
}

.goal-card {
  background: linear-gradient(135deg, var(--bg-card), var(--bg-secondary));
  border-left: 4px solid var(--accent-cyan);
  border-radius: 0 8px 8px 0;
  padding: 1.5rem;
  margin-bottom: 1.2rem;
}

.page-intro {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 680px;
  margin-bottom: 2rem;
}

/* =============================================
   ID Selectors
   ============================================= */

#current-date {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
}

#site-footer-text {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}

#profile-photo {
  width: 120px;
  height: 120px;
  object-fit: cover;
  float: right;
  margin-left: 2rem;
}

#page-tagline {
  font-size: 1.3rem;
  color: var(--text-muted);
  font-weight: 300;
  margin-top: 0.5rem;
}

/* =============================================
   Descendant Selectors
   ============================================= */

nav a {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-muted);
  padding: 0.4rem 1rem;
  font-size: 0.88rem;
  font-family: var(--font-heading);
  font-weight: 600;
  transition: all 0.2s ease;
}

header h1 {
  margin-bottom: 0.2rem;
}

article ul {
  list-style: disc;
  padding-left: 1.4rem;
}

article li {
  color: var(--text-muted);
  font-size: 0.95rem;
}

form label {
  font-family: var(--font-body);
}

table tr:nth-child(even) {
  background-color: var(--bg-card);
}

/* =============================================
   Pseudo-class Selectors
   ============================================= */

a:hover {
  color: var(--accent-light);
}

nav a:hover {
  background-color: var(--accent-cyan);
  color: var(--bg-primary);
  border-color: var(--accent-cyan);
}

nav a.active {
  background-color: rgba(0, 180, 216, 0.15);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

article:hover {
  border-color: var(--accent-cyan);
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(0, 180, 216, 0.15);
}

.btn-submit:hover {
  background-color: var(--accent-light);
  color: var(--bg-primary);
}

tr:hover {
  background-color: rgba(0, 180, 216, 0.05);
}

/* =============================================
   List Style Properties
   ============================================= */

ul.skills-list {
  list-style: none;
  padding-left: 0;
}

ul.skills-list li::before {
  content: "– ";
  color: var(--accent-cyan);
  font-size: 0.9rem;
}

ol.timeline {
  list-style: decimal;
  padding-left: 1.5rem;
}

ol.timeline li {
  padding-left: 0.5rem;
  margin-bottom: 0.6rem;
}

ul.nav-list {
  list-style-type: none;
  padding-left: 0;
}

/* =============================================
   Font Properties
   ============================================= */

.mono-text {
  font-family: var(--font-mono);
  font-size: 0.88rem;
}

.display-text {
  font-family: var(--font-heading);
  font-weight: 800;
}

/* =============================================
   Submit Button
   ============================================= */

.btn-submit {
  background-color: var(--accent-cyan);
  color: var(--bg-primary);
  border: none;
  border-radius: 6px;
  padding: 0.75rem 2rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  transition: background-color 0.2s ease;
  margin-top: 1rem;
}

/* =============================================
   Responsive
   ============================================= */

/* =============================================
   Page Transitions (View Transitions API — MPA)
   Vanilla CSS; gracefully ignored where unsupported
   ============================================= */

@view-transition {
  navigation: auto;
}

::view-transition-old(root) {
  animation: vt-fade-out 0.28s ease both;
}

::view-transition-new(root) {
  animation: vt-fade-in 0.34s ease both;
}

@keyframes vt-fade-out {
  to { opacity: 0; transform: translateY(-8px); }
}

@keyframes vt-fade-in {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: none; }
}

/* =============================================
   On-load + Scroll Reveal (progressive enhancement)
   Hidden states ONLY apply when JS is present (.js)
   ============================================= */

.js .reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.js .reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* Staggered reveal for collage tiles */
.js .collage .reveal:nth-child(2) { transition-delay: 0.06s; }
.js .collage .reveal:nth-child(3) { transition-delay: 0.12s; }
.js .collage .reveal:nth-child(4) { transition-delay: 0.18s; }
.js .collage .reveal:nth-child(5) { transition-delay: 0.24s; }
.js .collage .reveal:nth-child(6) { transition-delay: 0.30s; }
.js .collage .reveal:nth-child(7) { transition-delay: 0.36s; }
.js .collage .reveal:nth-child(8) { transition-delay: 0.42s; }

/* =============================================
   Identity Flair — coder / dog-hiker / gamer
   (uses the CSS `font` shorthand property)
   ============================================= */

.identity-flair {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.1rem;
}

.flair-chip {
  font: 600 0.82rem/1 var(--font-mono);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--accent-cyan);
  background-color: rgba(0, 180, 216, 0.1);
  border: 1px solid rgba(0, 180, 216, 0.35);
  border-radius: 20px;
  padding: 0.4rem 0.85rem;
  transition: transform 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
}

.flair-chip:hover {
  transform: translateY(-2px);
  background-color: rgba(0, 180, 216, 0.2);
  box-shadow: 0 4px 14px rgba(0, 180, 216, 0.18);
}

/* =============================================
   Collage — themed stock imagery
   ============================================= */

.collage {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 130px;
  grid-auto-flow: dense;
  gap: 0.75rem;
  margin: 1.5rem 0 2rem;
}

.collage figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  border-radius: 10px;
  border: 1px solid var(--border-color);
}

.collage figure:nth-child(1) {
  grid-column: span 2;
  grid-row: span 2;
}

.collage figure:nth-child(6) {
  grid-column: span 2;
}

.collage img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  border: none;
  border-radius: 0;
  filter: saturate(0.85) brightness(0.82);
  transition: transform 0.5s ease, filter 0.5s ease;
}

.collage figure:hover img {
  transform: scale(1.08);
  filter: saturate(1.1) brightness(1);
}

.collage figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-primary);
  background: linear-gradient(transparent, rgba(13, 17, 23, 0.9));
  padding: 1.4rem 0.7rem 0.55rem;
  opacity: 0;
  transition: opacity 0.35s ease;
}

.collage figure:hover figcaption {
  opacity: 1;
}

/* =============================================
   Interview-style Q&A
   (uses the CSS `font` shorthand property)
   ============================================= */

.interview {
  display: grid;
  gap: 1rem;
}

.interview-item {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--accent-cyan);
  border-radius: 0 8px 8px 0;
  padding: 1.1rem 1.3rem;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.interview-item:hover {
  border-color: var(--accent-cyan);
  transform: translateX(3px);
}

.interview-q {
  font: italic 700 1.05rem/1.4 var(--font-heading);
  color: var(--accent-light);
  margin-bottom: 0.4rem;
}

.interview-a {
  color: var(--text-muted);
  margin-bottom: 0;
}

/* =============================================
   Sources & Credits
   ============================================= */

.credits-list {
  list-style: square;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.credits-list li {
  color: var(--text-muted);
}

/* =============================================
   Project Screenshots
   ============================================= */

.project-shots {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin: 1.1rem 0 0.4rem;
}

.project-shots figure {
  margin: 0;
}

.project-shots img {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.project-shots img:hover {
  transform: translateY(-3px);
  border-color: var(--accent-cyan);
}

.project-shots figcaption {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 0.35rem;
  text-align: center;
}

@media (max-width: 640px) {
  .project-shots { grid-template-columns: 1fr; }
}

/* =============================================
   Responsive
   ============================================= */

@media (max-width: 640px) {
  h1 { font-size: 2rem; }
  .hero-name { font-size: 2.2rem; }
  .two-col { grid-template-columns: 1fr; }
  #profile-photo { float: none; margin: 0 0 1rem 0; }
  nav { gap: 0.4rem; }

  .collage {
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: 110px;
  }
  .collage figure:nth-child(1) { grid-column: span 2; grid-row: span 1; }
  .collage figure:nth-child(6) { grid-column: span 2; }
  .collage figcaption { opacity: 1; }
}

/* =============================================
   Reduced-motion accessibility
   ============================================= */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { opacity: 1 !important; transform: none !important; transition: none; }
  .collage img,
  .collage figure:hover img { transition: none; }
  ::view-transition-old(root),
  ::view-transition-new(root) { animation: none; }
}