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

:root {
  --color-bg: #12101a;
  --color-bg-alt: #1a1726;
  --color-surface: #221e30;
  --color-text: #e8e4f0;
  --color-text-subtle: #9a8fb3;
  --color-accent: #a855f7;
  --color-accent-hover: #c084fc;
  --color-accent-secondary: #f97316;
  --color-accent-secondary-hover: #fb923c;
  --color-border: #332d44;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --max-width: 960px;
  --radius: 8px;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

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

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

/* ===== Navbar ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: none;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  background: rgba(18, 16, 26, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

@media (max-width: 1350px) {
  .navbar {
    display: flex;
  }
}

.nav-brand {
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-links a {
  color: var(--color-text-subtle);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}

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

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

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 6rem 2rem 4rem;
}

.hero-greeting {
  font-size: 1.1rem;
  color: var(--color-accent);
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.hero-name {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-tagline {
  font-size: 1.25rem;
  color: var(--color-text-subtle);
  margin-bottom: 2.5rem;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== Scroll Hint ===== */
.scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  opacity: 0.5;
  transition: opacity 0.3s;
  animation: scroll-fade 2.5s ease-in-out infinite;
}

.scroll-hint:hover {
  opacity: 0.8;
}

.scroll-hint-text {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-subtle);
}

.scroll-hint-arrow {
  width: 18px;
  height: 18px;
  border-right: 2px solid var(--color-accent);
  border-bottom: 2px solid var(--color-accent);
  transform: rotate(45deg);
  animation: scroll-bounce 2.5s ease-in-out infinite;
}

@keyframes scroll-bounce {
  0%, 100% { transform: rotate(45deg) translateY(0); }
  50% { transform: rotate(45deg) translateY(5px); }
}

@keyframes scroll-fade {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 0.25; }
}

.scroll-hint.hidden {
  opacity: 0 !important;
  animation: none;
  pointer-events: none;
}

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.2s;
  cursor: pointer;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  color: #fff;
}

.btn-outline {
  border: 1.5px solid var(--color-border);
  color: var(--color-text);
}

.btn-outline:hover {
  border-color: var(--color-accent-secondary);
  color: var(--color-accent-secondary);
}

/* ===== Sections ===== */
.section {
  padding: 5rem 2rem;
}

.section-alt {
  background: var(--color-bg-alt);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 2.5rem;
  letter-spacing: -0.02em;
}

.section-title::after {
  content: '';
  display: block;
  width: 48px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-secondary));
  margin-top: 0.75rem;
  border-radius: 2px;
}

/* ===== About: Profile Photo + Title Row ===== */
.section-title-row {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

.section-title-row .section-title {
  margin-bottom: 0;
}

.profile-photo {
  width: 72px;
  height: 72px;
  max-width: 72px;
  max-height: 72px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center 30%;
  flex-shrink: 0;
  border: 2px solid transparent;
  background-image: linear-gradient(var(--color-surface), var(--color-surface)),
                    linear-gradient(135deg, var(--color-accent), var(--color-accent-secondary));
  background-origin: border-box;
  background-clip: padding-box, border-box;
}

/* ===== About ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 3rem;
  align-items: start;
}

.about-text p {
  margin-bottom: 1rem;
  color: var(--color-text-subtle);
  font-size: 1.05rem;
}

.about-details {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.detail-card {
  background: var(--color-surface);
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

.detail-card h3 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: 0.4rem;
}

.detail-card p {
  font-size: 0.95rem;
}

.subtle {
  color: var(--color-text-subtle);
  font-size: 0.85rem !important;
}

/* ===== Projects ===== */
.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.project-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.75rem 2rem;
  transition: border-color 0.2s, transform 0.2s;
}

.project-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

.project-header h3 {
  font-size: 1.2rem;
  font-weight: 600;
}

.project-links {
  display: flex;
  gap: 1rem;
}

.project-links a {
  font-size: 0.85rem;
  font-weight: 500;
}

.project-card > p {
  color: var(--color-text-subtle);
  margin-bottom: 1rem;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.3rem 0.75rem;
  background: rgba(168, 85, 247, 0.12);
  color: var(--color-accent-secondary);
  border-radius: 20px;
  letter-spacing: 0.02em;
}

/* ===== Experience Timeline ===== */
.timeline {
  position: relative;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.5rem;
  bottom: 0.5rem;
  width: 2px;
  background: var(--color-border);
}

.timeline-item {
  position: relative;
  margin-bottom: 2.5rem;
}

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

.timeline-marker {
  position: absolute;
  left: -2rem;
  top: 0.5rem;
  width: 12px;
  height: 12px;
  background: var(--color-accent);
  border-radius: 50%;
  transform: translateX(-5px);
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.25rem;
}

.timeline-header h3 {
  font-size: 1.1rem;
  font-weight: 600;
}

.timeline-date {
  font-size: 0.85rem;
  color: var(--color-text-subtle);
  font-family: var(--font-mono);
}

.timeline-company {
  color: var(--color-accent);
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.timeline-content > p:last-child {
  color: var(--color-text-subtle);
}

.timeline-bullets {
  list-style: none;
  padding: 0;
}

.timeline-bullets li {
  color: var(--color-text-subtle);
  position: relative;
  padding-left: 1rem;
  margin-bottom: 0.4rem;
}

.timeline-bullets li::before {
  content: '\2013';
  position: absolute;
  left: 0;
  color: var(--color-accent);
}

/* ===== Testimonials ===== */
.testimonials-grid {
  columns: 2;
  column-gap: 1.5rem;
}

.testimonial-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.75rem 2rem;
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s;
  break-inside: avoid;
  margin-bottom: 1.5rem;
}

.testimonial-card:hover {
  border-color: var(--color-accent);
}

.testimonial-card blockquote {
  color: var(--color-text-subtle);
  font-size: 0.95rem;
  line-height: 1.7;
  font-style: italic;
  margin-bottom: 1.25rem;
}

.testimonial-summary {
  max-height: 500px;
  opacity: 1;
  overflow: hidden;
  transition: max-height 0.5s ease, opacity 0.3s ease;
}

.testimonial-card.expanded .testimonial-summary {
  max-height: 0;
  opacity: 0;
}

.testimonial-full {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 0.5s ease, opacity 0.4s ease;
  margin-bottom: 0;
}

.testimonial-card.expanded .testimonial-full {
  max-height: 2000px;
  opacity: 1;
  margin-bottom: 1.25rem;
  transition: max-height 1.2s ease, opacity 0.8s ease;
}

.testimonial-toggle {
  background: none;
  border: none;
  color: var(--color-accent-secondary);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  padding: 0;
  margin-bottom: 1.25rem;
  transition: color 0.2s;
  text-align: left;
}

.testimonial-toggle:hover {
  color: var(--color-accent-secondary-hover);
}

.testimonial-author {
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 1rem;
  margin-bottom: 1.25rem;
}

.testimonial-name {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-text);
}

.testimonial-role {
  font-size: 0.8rem;
  color: var(--color-accent);
  margin-top: 0.15rem;
}

/* ===== Contact ===== */
.contact-intro {
  color: var(--color-text-subtle);
  font-size: 1.1rem;
  margin-bottom: 2rem;
  max-width: 500px;
}

.contact-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* ===== Footer ===== */
.footer {
  text-align: center;
  padding: 2rem;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-subtle);
  font-size: 0.85rem;
}

/* ===== Side Nav ===== */
.side-nav {
  position: fixed;
  left: 2rem;
  top: 50%;
  transform: translateY(-50%);
  z-index: 99;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0;
}

.side-nav-track {
  position: absolute;
  left: calc(1.25rem + 6px);
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
  transform: translateX(-50%);
  border-radius: 1px;
}

.side-nav-progress {
  position: absolute;
  left: calc(1.25rem + 6px);
  top: 0;
  width: 2px;
  height: 0%;
  background: linear-gradient(180deg, var(--color-accent), var(--color-accent-secondary));
  transform: translateX(-50%);
  border-radius: 1px;
  transition: height 0.4s ease;
}

.side-nav-item {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  padding: 0.75rem 0;
  padding-left: 1.25rem;
  z-index: 1;
}

.side-nav-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid var(--color-accent);
  background: var(--color-bg);
  transition: all 0.3s ease;
  flex-shrink: 0;
}

.side-nav-item:hover .side-nav-dot {
  border-color: var(--color-accent-hover);
  box-shadow: 0 0 8px rgba(168, 85, 247, 0.3);
}

.side-nav-item.active .side-nav-dot {
  border-color: var(--color-accent);
  background: var(--color-accent);
  box-shadow: 0 0 12px rgba(168, 85, 247, 0.5);
}

.side-nav-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-subtle);
  white-space: nowrap;
  opacity: 1;
  transform: translateX(0);
  transition: color 0.3s ease;
}

.side-nav-item.active .side-nav-label {
  color: var(--color-accent);
}

/* Connector line — disabled */
.side-nav-connector {
  display: none;
}

/* Hide top nav links on desktop when side nav is present */
@media (min-width: 1351px) {
  .nav-links {
    display: none !important;
  }
  .nav-toggle {
    display: none !important;
  }
}

/* Hide side nav when window is not wide enough */
@media (max-width: 1350px) {
  .side-nav,
  .side-nav-connector {
    display: none !important;
  }
}

/* ===== Responsive ===== */
@media (max-width: 1350px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(18, 16, 26, 0.95);
    backdrop-filter: blur(12px);
    padding: 1.5rem 2rem;
    gap: 1rem;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-links.active {
    display: flex;
  }

  .nav-toggle {
    display: flex;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .timeline-header {
    flex-direction: column;
    gap: 0.2rem;
  }

  .project-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .testimonials-grid {
    columns: 1;
  }
}