/* aarus2709.me Clone Design System */
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600&family=Space+Grotesk:wght@300;400;500;600;700&display=swap');

:root {
  /* Default to Light Theme */
  --accent-color: #000;
  --accent-color-alpha: rgba(0, 0, 0, 0.08);
  --bg-color: #fafafa;
  --fg-color: rgba(0, 0, 0, 0.8);
  --primary-text: rgba(0, 0, 0, 0.88);
  --secondary-text: rgba(0, 0, 0, 0.55);
  --tertiary-text: rgba(0, 0, 0, 0.35);
  --border-color: rgba(0, 0, 0, 0.08);
  --hover-bg: rgba(0, 0, 0, 0.04);
  --glass-bg: rgba(242, 242, 242, 0.85);
  
  --shadow-raised: 0 8px 30px rgba(0,0,0,0.08);
  
  /* Global Layout & Typography Variables */
  --font-family: "Space Grotesk", -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", monospace;
  
  --hero-size: clamp(3.5rem, 10vw, 7rem);
  --section-size: clamp(1.5rem, 3.5vw, 2rem);
  --text-size: clamp(1rem, 1.5vw, 1.125rem);
  
  --font-size-xs: 0.75rem;
  --font-size-small: 0.875rem;
  --font-size-base: 1rem;
  --font-size-large: 1.125rem;
  --font-size-x-large: 1.375rem;
  --font-size-xx-large: 1.75rem;
  
  --container-max: 52rem;
  --container-padding: 2rem;
  --section-padding: 5rem 0;
  
  --rounded-corner: 0.625rem;
  --rounded-corner-small: 0.375rem;
  
  --transition-smooth: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
  --accent-color: #fff;
  --accent-color-alpha: rgba(255, 255, 255, 0.07);
  --bg-color: #000;
  --fg-color: rgba(255, 255, 255, 0.92);
  --primary-text: rgba(255, 255, 255, 0.92);
  --secondary-text: rgba(255, 255, 255, 0.5);
  --tertiary-text: rgba(255, 255, 255, 0.3);
  --border-color: rgba(255, 255, 255, 0.07);
  --hover-bg: rgba(255, 255, 255, 0.04);
  --glass-bg: rgba(10, 10, 10, 0.85);
  
  --shadow-raised: 0 8px 30px rgba(0,0,0,0.6);
}

@media (max-width: 768px) {
  :root {
    --container-padding: 1.25rem;
    --section-padding: 3.5rem 0;
  }
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  color: var(--primary-text);
  background: var(--bg-color);
  font-weight: 400;
  line-height: 1.6;
  font-size: var(--font-size-base);
  letter-spacing: -0.005em;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  overflow-x: hidden;
}

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

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

h1, h2, h3 {
  letter-spacing: -0.03em;
  font-weight: 600;
  line-height: 1.2;
}

a {
  color: var(--accent-color);
  transition: var(--transition-smooth);
  font-weight: 500;
  text-decoration: none;
}

a:hover {
  opacity: 0.7;
}

/* Animations */
@keyframes fadeIn {
  0% { opacity: 0; filter: blur(4px); }
  100% { opacity: 1; filter: blur(0); }
}

@keyframes slideUp {
  0% { opacity: 0; filter: blur(4px); transform: translateY(30px); }
  100% { opacity: 1; filter: blur(0); transform: translateY(0); }
}

.fade-in {
  opacity: 0;
  animation: 0.6s forwards fadeIn;
}

.slide-up {
  opacity: 0;
  animation: 0.6s forwards slideUp;
  transform: translateY(20px);
}

/* Header / Hero */
.header {
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  min-height: 80vh;
  padding-top: 4rem;
  display: flex;
  position: relative;
}

.hero-label {
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  color: var(--tertiary-text);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  font-weight: 500;
}

.name {
  font-size: var(--hero-size);
  letter-spacing: -0.04em;
  color: var(--primary-text);
  text-transform: lowercase;
  margin: 0;
  font-weight: 700;
  line-height: 0.95;
}

.name-line {
  display: block;
}

.title {
  font-size: var(--font-size-large);
  color: var(--secondary-text);
  max-width: 32rem;
  margin: 2rem 0 0;
  font-weight: 400;
  line-height: 1.5;
}

.hero-links {
  gap: 0.75rem;
  margin-top: 2rem;
  display: flex;
}

.hero-links a {
  color: var(--secondary-text);
  font-size: var(--font-size-xs);
  font-weight: 500;
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
  border: 1px solid var(--border-color);
  transition: var(--transition-smooth);
  background: transparent;
  border-radius: 999px;
  padding: 0.4rem 0.75rem;
}

.hero-links a:hover {
  background: var(--accent-color);
  color: var(--bg-color);
  border-color: var(--accent-color);
  opacity: 1;
  transform: translateY(-1px);
}

/* Sections */
.section {
  padding: var(--section-padding);
  position: relative;
}

.section-header {
  border-bottom: 1px solid var(--border-color);
  align-items: baseline;
  gap: 0.75rem;
  margin-bottom: 2rem;
  padding: 0 0 1.25rem;
  display: flex;
}

.section-title {
  font-size: var(--section-size);
  color: var(--primary-text);
  letter-spacing: -0.03em;
  text-transform: lowercase;
  margin: 0;
  font-weight: 600;
  line-height: 1.2;
}

.section-number {
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  color: var(--tertiary-text);
  letter-spacing: 0.05em;
  flex-shrink: 0;
  font-weight: 500;
}

/* About / Simple Text Sections */
.about-content {
  flex-direction: column;
  gap: 1rem;
  display: flex;
}

.about-content p {
  font-size: var(--font-size-base);
  color: var(--secondary-text);
  max-width: 36rem;
  line-height: 1.75;
}

/* Flagship Cards (Projects & Experience) */
.flagship-grid {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
  margin-bottom: 3rem;
  display: grid;
}

.flagship {
  border: 1px solid var(--border-color);
  border-radius: var(--rounded-corner);
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  transition: var(--transition-smooth);
  padding: 2rem;
  position: relative;
}

.flagship:hover {
  border-color: var(--accent-color);
  box-shadow: var(--shadow-raised);
  transform: translateY(-2px);
}

.flagship-header {
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
  display: flex;
}

.flagship-label {
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  color: var(--accent-color);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 500;
}

.flagship-metric {
  color: var(--tertiary-text);
  font-size: var(--font-size-xs);
  font-weight: 500;
  font-family: var(--font-mono);
  align-items: center;
}

.flagship-title {
  font-size: var(--font-size-xx-large);
  color: var(--primary-text);
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
  font-weight: 600;
  line-height: 1.2;
}

.flagship-description {
  color: var(--secondary-text);
  font-size: var(--font-size-base);
  max-width: 36rem;
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.flagship-tech {
  flex-wrap: wrap;
  gap: 0.375rem;
  margin-bottom: 1.5rem;
  display: flex;
}

.tech-tag {
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  color: var(--tertiary-text);
  border: 1px solid var(--border-color);
  text-transform: lowercase;
  border-radius: 999px;
  padding: 0.2rem 0.5rem;
  font-weight: 500;
}

.flagship-links {
  gap: 0.75rem;
  display: flex;
}

.flagship-link {
  color: var(--primary-text);
  font-size: var(--font-size-small);
  border: 1px solid var(--border-color);
  transition: var(--transition-smooth);
  border-radius: 999px;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.75rem;
  font-weight: 500;
  display: inline-flex;
}

.flagship-link:hover {
  background: var(--accent-color);
  color: var(--bg-color);
  border-color: var(--accent-color);
  opacity: 1;
}

/* Skills / Stack */
.skills-grouped {
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-top: 1.5rem;
  display: grid;
}

.skill-group {
  flex-direction: column;
  gap: 0.75rem;
  display: flex;
}

.skill-group-label {
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  color: var(--tertiary-text);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 500;
}

.skill-group-items {
  flex-wrap: wrap;
  gap: 0.375rem;
  display: flex;
}

.skill-tag {
  font-size: var(--font-size-small);
  color: var(--secondary-text);
  border: 1px solid var(--border-color);
  transition: var(--transition-smooth);
  background: transparent;
  border-radius: 999px;
  padding: 0.3rem 0.6rem;
  font-weight: 500;
}

.skill-tag:hover {
  color: var(--primary-text);
  border-color: var(--accent-color);
  transform: translateY(-1px);
}

/* Education / Building List */
.building-list {
  flex-direction: column;
  gap: 0;
  margin-top: 1.5rem;
  display: flex;
}

.building-item {
  border-bottom: 1px solid var(--border-color);
  align-items: flex-start;
  gap: 1rem;
  padding: 1.25rem 0;
  display: flex;
}

.building-item:last-child {
  border-bottom: none;
}

.building-status {
  padding-top: 0.4rem;
}

/* Reusing the same concept for Education dots */
.status-dot {
  background: var(--accent-color);
  border-radius: 50%;
  width: 6px;
  height: 6px;
  display: block;
}

.building-info {
  flex-direction: column;
  gap: 0.25rem;
  display: flex;
}

.building-name {
  font-size: var(--font-size-base);
  color: var(--primary-text);
  letter-spacing: -0.01em;
  font-weight: 600;
}

.building-desc {
  font-size: var(--font-size-small);
  color: var(--tertiary-text);
  font-weight: 400;
  line-height: 1.5;
}

/* Contact block */
.contact-section {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  margin-top: 1.5rem;
}

.contact-info p {
  font-size: var(--font-size-small);
  color: var(--secondary-text);
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.contact-links {
  flex-direction: column;
  gap: 0.25rem;
  display: flex;
}

.contact-link {
  color: var(--secondary-text);
  border-radius: var(--rounded-corner-small);
  transition: var(--transition-smooth);
  font-weight: 500;
  font-size: var(--font-size-small);
  font-family: var(--font-mono);
  background: transparent;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  display: inline-flex;
  width: max-content;
}

.contact-link:hover {
  background: var(--hover-bg);
  color: var(--primary-text);
  transform: translate(4px);
}

/* Navbar (Minimalist matching ref) */
#site-nav {
  z-index: 1000;
  justify-content: center;
  padding: 0 1rem;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.35s;
  animation: 0.6s cubic-bezier(0.16, 1, 0.3, 1) both slideDown;
  display: flex;
  position: fixed;
  top: 0.75rem;
  left: 0;
  right: 0;
}

#site-nav nav {
  max-width: min(var(--container-max), 90%);
  background: var(--glass-bg);
  width: auto;
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: 999px;
  padding: 0.35rem 0.5rem;
}

#site-nav ul {
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 0.15rem;
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
}

#site-nav .nav-link {
  color: var(--secondary-text);
  font-weight: 600;
  font-size: var(--font-size-small);
  border-radius: 999px;
  padding: 0.4rem 0.65rem;
  transition: background 0.2s, color 0.2s;
  display: flex;
}

#site-nav .nav-link:hover {
  background: var(--hover-bg);
  color: var(--primary-text);
}

#site-nav .nav-link.active {
  background: var(--accent-color-alpha);
  color: var(--accent-color);
}

.divider {
  background: var(--border-color);
  flex-shrink: 0;
  width: 1px;
  height: 1.25rem;
  margin: 0 0.25rem;
}

@keyframes slideDown {
  0% { opacity: 0; transform: translateY(-20px); }
  100% { opacity: 1; transform: translateY(0); }
}

@media (max-width: 768px) {
  #site-nav { display: none; }
  .skills-grouped { grid-template-columns: 1fr; }
  .header { min-height: 70vh; padding-top: 3rem; }
}

.footer {
  border-top: 1px solid var(--border-color);
  margin-top: 3rem;
  padding: 2rem 0;
}

.footer-inner {
  max-width: var(--container-max);
  padding: 0 var(--container-padding);
  justify-content: space-between;
  align-items: center;
  margin: 0 auto;
  display: flex;
}

.footer-text {
  color: var(--tertiary-text);
  font-size: var(--font-size-xs);
  letter-spacing: 0.02em;
  font-weight: 400;
  font-family: var(--font-mono);
}

/* New Nav Buttons & Theme Switcher */
.home-link {
  color: var(--primary-text);
  font-weight: 600;
  font-size: var(--font-size-small);
  border-radius: 999px;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.75rem;
  transition: background 0.2s, color 0.2s;
  display: flex;
}
.home-link:hover {
  background: var(--hover-bg);
}
.home-icon {
  width: 1rem;
  height: 1rem;
}
.nav-icon-link {
  padding: 0.4rem;
  color: var(--secondary-text);
  display: flex;
  transition: color 0.2s;
}
.nav-icon-link:hover {
  color: var(--primary-text);
}
.nav-icon-link svg {
  width: 1rem;
  height: 1rem;
}
#theme-switcher {
  align-items: center;
  gap: 0.1rem;
  display: flex;
}
.theme-btn {
  width: 1.75rem;
  height: 1.75rem;
  color: var(--secondary-text);
  cursor: pointer;
  background: transparent;
  border: none;
  border-radius: 999px;
  justify-content: center;
  align-items: center;
  padding: 0;
  transition: background 0.2s, color 0.2s;
  display: flex;
}
.theme-btn svg {
  width: 0.875rem;
  height: 0.875rem;
}
.theme-btn:hover {
  background: var(--hover-bg);
  color: var(--primary-text);
}
.theme-btn.active {
  background: var(--accent-color-alpha);
  color: var(--accent-color);
}