/* Modern Portfolio Styles */
/* Base reset and modern defaults */

/* Box sizing */
*, *::before, *::after {
  box-sizing: border-box;
}

/* Reset margins and paddings */
* {
  margin: 0;
  padding: 0;
}

/* Root and body setup */
html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text-primary);
  background-color: var(--color-background);
  transition: background-color var(--transition-base), color var(--transition-base);
  min-height: 100vh;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-3xl); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); }

p {
  margin-bottom: var(--space-4);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

a {
  color: var(--color-link);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-link-hover);
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.container-sm { max-width: var(--container-sm); }
.container-md { max-width: var(--container-md); }
.container-lg { max-width: var(--container-lg); }

/* Section */
.section {
  padding: var(--space-24) 0;
  position: relative;
}

.section-sm { padding: var(--space-16) 0; }
.section-lg { padding: var(--space-32) 0; }

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  background: var(--color-background);
}

.hero-content {
  text-align: center;
  max-width: 900px;
  z-index: var(--z-base);
}

.hero-title {
  font-size: var(--text-6xl);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-6);
  background: var(--color-accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: fadeInUp 0.8s ease-out;
}

.hero-subtitle {
  font-size: var(--text-2xl);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-8);
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-description {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-10);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  animation: fadeInUp 0.8s ease-out 0.4s both;
}

/* Gradient Mesh Background */
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 50%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
              radial-gradient(circle at 70% 50%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
  animation: meshMove 20s ease-in-out infinite;
  pointer-events: none;
}

@keyframes meshMove {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  33% { transform: translate(5%, 5%) rotate(5deg); }
  66% { transform: translate(-5%, 5%) rotate(-5deg); }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
}

.btn-primary {
  background: var(--color-accent-gradient);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-surface-elevated);
  border-color: var(--color-border-light);
}

.btn-group {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  justify-content: center;
}

/* Cards */
.card {
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  position: relative;
  z-index: 1;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-accent-primary);
}

.card h3 {
  color: var(--color-text-primary) !important;
}

.card p {
  color: var(--color-text-secondary) !important;
}

.card .timeline-date {
  color: var(--color-text-tertiary) !important;
}

.card .timeline-title {
  color: var(--color-text-primary) !important;
}

.card .timeline-description {
  color: var(--color-text-secondary) !important;
}

.card-image {
  width: 100%;
  height: 300px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-4);
}

.card-title {
  font-size: var(--text-2xl);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-3);
}

.card-description {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}

/* Bento Grid */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--grid-gap-lg);
  margin-bottom: var(--space-12);
}

.bento-item {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-xl);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

.bento-item:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-glow);
}

.bento-item-large {
  grid-column: span 2;
  grid-row: span 2;
}

.bento-item-tall {
  grid-row: span 2;
}

.bento-item-wide {
  grid-column: span 2;
}

.bento-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0.85) 0%,
    rgba(0, 0, 0, 0.95) 100%
  );
  border-radius: var(--radius-xl);
}

/* Trent AI special overlay with blue accent + dark background */
.bento-overlay-trent {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
      135deg,
      rgba(59, 130, 246, 0.2) 0%,
      rgba(139, 92, 246, 0.2) 100%
    ),
    linear-gradient(
      to bottom,
      rgba(0, 0, 0, 0.85) 0%,
      rgba(0, 0, 0, 0.95) 100%
    );
  border-radius: var(--radius-xl);
}

.bento-content {
  padding: var(--space-6);
  position: relative;
  z-index: var(--z-base);
}

.bento-content .card-title {
  color: #ffffff;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.bento-content .card-description {
  color: #e4e4e7;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.bento-content ul {
  color: #e4e4e7;
}

.bento-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  top: 0;
  left: 0;
  z-index: -1;
  opacity: 0.4;
  transition: all var(--transition-slow);
}

.bento-item:hover .bento-image {
  opacity: 0.6;
  transform: scale(1.05);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  border-radius: var(--radius-full);
  background: var(--color-surface-elevated);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

.badge-award {
  background: rgba(245, 158, 11, 0.1);
  color: var(--color-award);
  border-color: var(--color-award);
}

.badge-publication {
  background: rgba(139, 92, 246, 0.1);
  color: var(--color-publication);
  border-color: var(--color-publication);
}

.badge-group {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-top: var(--space-3);
}

/* Timeline */
.timeline {
  position: relative;
  padding-left: var(--space-8);
  z-index: 1;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
  z-index: 0;
}

.timeline-item {
  position: relative;
  padding-bottom: var(--space-8);
  z-index: 1;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: calc(-1 * var(--space-8) - 6px);
  top: 0;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-accent-primary);
  border: 3px solid var(--color-surface-elevated);
  box-shadow: var(--shadow-glow);
}

.timeline-date {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-2);
  font-weight: var(--font-medium);
  position: relative;
  z-index: 1;
}

.timeline-title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-2);
  color: var(--color-text-primary);
  position: relative;
  z-index: 1;
}

.timeline-description {
  color: var(--color-text-secondary);
  font-size: var(--text-base);
  position: relative;
  z-index: 1;
}

/* Sidebar Navigation */
.sidebar-nav {
  position: fixed;
  left: var(--space-6);
  top: 50%;
  transform: translateY(-50%);
  z-index: var(--z-fixed);
}

.sidebar-nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.sidebar-nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  transition: all var(--transition-base);
  padding: var(--space-2);
  border-radius: var(--radius-md);
}

.sidebar-nav-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-border);
  transition: all var(--transition-base);
  flex-shrink: 0;
}

.sidebar-nav-label {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-tertiary);
  opacity: 0.4;
  transform: translateX(0);
  transition: all var(--transition-base);
  white-space: nowrap;
}

.sidebar-nav-link:hover .sidebar-nav-dot {
  background: var(--color-accent-primary);
  transform: scale(1.3);
  box-shadow: 0 0 10px var(--color-accent-primary);
}

.sidebar-nav-link:hover .sidebar-nav-label {
  opacity: 1;
  color: var(--color-text-primary);
}

.sidebar-nav-link.active .sidebar-nav-dot {
  width: 12px;
  height: 12px;
  background: var(--color-accent-primary);
  box-shadow: 0 0 15px var(--color-accent-primary);
}

.sidebar-nav-link.active .sidebar-nav-label {
  opacity: 1;
  color: var(--color-accent-primary);
  font-weight: var(--font-semibold);
}

/* Hide sidebar on mobile */
@media (max-width: 768px) {
  .sidebar-nav {
    display: none;
  }
}

/* Education & Experience Cards */
.edu-exp-card {
  background: var(--color-surface-elevated);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-lg);
}

.edu-exp-card h3 {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
  font-size: var(--text-2xl);
  color: var(--color-text-primary);
}

.edu-exp-item {
  margin-bottom: var(--space-6);
}

.edu-exp-item:last-child {
  margin-bottom: 0;
}

.edu-exp-date {
  font-size: var(--text-sm);
  color: var(--color-accent-primary);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-2);
}

.edu-exp-title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-1);
}

.edu-exp-description {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.fade-in {
  animation: fadeIn 0.6s ease-out;
}

.fade-in-up {
  animation: fadeInUp 0.8s ease-out;
}

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

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

/* Responsive */
@media (max-width: 1024px) {
  .hero-title { font-size: var(--text-5xl); }
  .bento-item-large,
  .bento-item-wide {
    grid-column: span 1;
  }
}

@media (max-width: 768px) {
  .hero-title { font-size: var(--text-4xl); }
  .hero-subtitle { font-size: var(--text-xl); }
  .section { padding: var(--space-16) 0; }
  .bento-grid { grid-template-columns: 1fr; gap: var(--grid-gap-md); }
  .bento-item-large,
  .bento-item-tall {
    grid-row: span 1;
  }
  .btn-group { flex-direction: column; width: 100%; }
  .btn { width: 100%; justify-content: center; }
}

@media (max-width: 480px) {
  .hero-title { font-size: var(--text-3xl); }
  .container { padding: 0 var(--space-4); }
}