:root {
  --color-bg: #f5f5f7;
  --color-bg-elevated: #ffffff;
  --color-bg-muted: #ebebef;
  --color-border: rgba(0, 0, 0, 0.08);
  --color-border-strong: rgba(0, 0, 0, 0.12);

  --color-text-primary: #1d1d1f;
  --color-text-secondary: #6e6e73;
  --color-text-muted: #86868b;

  --color-accent: #0071e3;
  --color-accent-hover: #0077ed;
  --color-accent-soft: rgba(0, 113, 227, 0.12);
  --color-accent-glow: rgba(0, 113, 227, 0.18);

  --color-cyber: #0a84ff;
  --color-success: #34c759;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: clamp(2.5rem, 6vw, 4rem);

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.08);

  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);

  --nav-height: 64px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text-primary);
  background: var(--color-bg);
  overflow-x: hidden;
}

body.intro-active {
  overflow: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

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

ul, ol {
  list-style: none;
}

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.section {
  padding: var(--space-20) 0;
}

.section-label {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}

.section-title {
  font-size: var(--text-3xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
  color: var(--color-text-primary);
}

.section-lead {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  max-width: 540px;
  margin-bottom: var(--space-10);
}

/* Intro splash */
.intro-splash {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-elevated);
  transition: opacity 0.9s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.9s;
}

.intro-splash.is-done {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.intro-splash__name {
  font-size: clamp(2.5rem, 12vw, 7rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  text-align: center;
  line-height: 1.05;
  padding: 0 var(--space-6);
  background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: introNameIn 1.1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.intro-splash.is-exiting .intro-splash__name {
  animation: introNameOut 0.85s cubic-bezier(0.4, 0, 1, 1) forwards;
}

@keyframes introNameIn {
  from {
    opacity: 0;
    transform: scale(0.92) translateY(24px);
    filter: blur(8px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
    filter: blur(0);
  }
}

@keyframes introNameOut {
  from {
    opacity: 1;
    transform: scale(1);
    filter: blur(0);
  }
  to {
    opacity: 0;
    transform: scale(1.06);
    filter: blur(12px);
  }
}

.site-main {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.8s ease 0.15s, transform 0.8s ease 0.15s;
}

.site-main.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .intro-splash,
  .site-main,
  .reveal {
    animation: none !important;
    transition: none !important;
  }
  .intro-splash { display: none; }
  .site-main { opacity: 1; transform: none; }
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  background: color-mix(in srgb, var(--color-bg) 72%, transparent);
  backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.nav.scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.nav-logo {
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.nav-logo span {
  color: var(--color-accent);
  font-weight: 700;
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav-link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--color-text-primary);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-controls {
    gap: var(--space-2);
  }

  .theme-toggle {
    width: 34px;
    height: 34px;
  }

  .theme-toggle svg {
    width: 16px;
    height: 16px;
  }
  
  .nav-menu {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    padding: var(--space-4) var(--space-6) var(--space-8);
    background: color-mix(in srgb, var(--color-bg-elevated) 96%, transparent);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition-slow), opacity var(--transition-slow), visibility var(--transition-slow);
  }

  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-link {
    display: block;
    padding: var(--space-4) 0;
    font-size: var(--text-base);
  }

  .nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  .nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  .nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }
}
@media (min-width: 769px) {
  .nav-container {
    position: relative;
  }

  .nav-menu {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
  }

  .nav-controls {
    margin-left: auto;
  }
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--nav-height) + var(--space-12)) var(--space-6) var(--space-16);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, var(--color-accent-soft), transparent),
    radial-gradient(circle at 90% 80%, rgba(10, 132, 255, 0.06), transparent 40%);
  pointer-events: none;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(var(--color-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-border) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at center, black 20%, transparent 70%);
  opacity: 0.5;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 720px;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  margin-bottom: var(--space-6);
  box-shadow: var(--shadow-sm);
}

.hero-eyebrow-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-success);
  box-shadow: 0 0 0 3px rgba(52, 199, 89, 0.25);
}

.hero-title {
  font-size: var(--text-5xl);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.08;
  margin-bottom: var(--space-5);
}

.hero-subtitle {
  font-size: clamp(1.05rem, 2.5vw, 1.35rem);
  color: var(--color-text-secondary);
  max-width: 520px;
  margin-bottom: var(--space-10);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: 999px;
  transition: transform var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  color: #fff;
  background: var(--color-accent);
  box-shadow: 0 4px 14px rgba(0, 113, 227, 0.35);
}

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

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

.btn-secondary:hover {
  box-shadow: var(--shadow-md);
}

.hero-scroll-hint {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  animation: floatHint 2.5s ease-in-out infinite;
}

@keyframes floatHint {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--space-12);
  align-items: start;
}

.about-photo {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
  aspect-ratio: 1;
  background: var(--color-bg-muted);
}

.about-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
}

.about-card p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
  font-size: var(--text-base);
}

.about-card p:last-child {
  margin-bottom: 0;
}

.about-highlight {
  color: var(--color-text-primary);
  font-weight: 600;
}

.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-6);
}

.about-tag {
  font-size: var(--text-xs);
  font-weight: 500;
  padding: var(--space-2) var(--space-3);
  background: var(--color-bg-muted);
  border-radius: 999px;
  color: var(--color-text-secondary);
}

@media (max-width: 900px) {
  .about-grid {
    grid-template-columns: 1fr;
  }
  .about-photo {
    max-width: 280px;
    margin: 0 auto;
  }
}

/* Skills marquee */
.skills-section {
  background: var(--color-bg-elevated);
  border-block: 1px solid var(--color-border);
}

.skills-marquee {
  overflow: hidden;
  padding: var(--space-10) 0;
  -webkit-mask-image: linear-gradient(90deg, transparent, black 8%, black 92%, transparent);
  mask-image: linear-gradient(90deg, transparent, black 8%, black 92%, transparent);
}

.marquee-track {
  display: flex;
  width: max-content;
  -webkit-animation: marquee 45s linear infinite;
  animation: marquee 45s linear infinite;
  -webkit-animation-play-state: running !important;
  animation-play-state: running !important;
  will-change: transform;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  -webkit-transform: translateZ(0);
  transform: translateZ(0);
  pointer-events: none;
}

@-webkit-keyframes marquee {
  0% { -webkit-transform: translate3d(0, 0, 0); transform: translate3d(0, 0, 0); }
  100% { -webkit-transform: translate3d(-50%, 0, 0); transform: translate3d(-50%, 0, 0); }
}

@keyframes marquee {
  0% { transform: translate3d(0, 0, 0); }
  100% { transform: translate3d(-50%, 0, 0); }
}

.marquee-content {
  display: flex;
  flex: 0 0 auto;
  gap: var(--space-8);
  padding: 0 var(--space-4);
}

.skill-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  min-width: 104px;
  padding: var(--space-4);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  pointer-events: none;
}

.skill-icon-img {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.skill-item span {
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-secondary);
}

/* Projects */
.project-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-8);
}

.filter-pill {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  transition: all var(--transition-fast);
}

.filter-pill:hover {
  border-color: var(--color-border-strong);
  color: var(--color-text-primary);
}

.filter-pill.is-active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-6);
}

.project-card {
  display: flex;
  flex-direction: column;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.clickable-card {
  cursor: pointer;
}

.project-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.project-preview {
  position: relative;
  aspect-ratio: 16 / 10;
  background: linear-gradient(145deg, var(--color-bg-muted), var(--color-bg-elevated));
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
}

.project-preview-chrome {
  display: flex;
  gap: 6px;
  padding: 10px 12px;
  background: var(--color-bg-muted);
  border-bottom: 1px solid var(--color-border);
}

.project-preview-chrome span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-border-strong);
}

.project-preview-chrome span:first-child {
  background: #ff5f57;
}
.project-preview-chrome span:nth-child(2) {
  background: #febc2e;
}
.project-preview-chrome span:nth-child(3) {
  background: #28c840;
}

.project-preview-frame {
  height: calc(100% - 37px);
  overflow: hidden;
  pointer-events: none;
}

.project-preview-frame iframe {
  width: 200%;
  height: 200%;
  border: 0;
  transform: scale(0.5);
  transform-origin: top left;
  background: #fff;
}

.project-preview--static .project-preview-placeholder {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--project-accent, #64748b), color-mix(in srgb, var(--project-accent, #64748b) 40%, white));
}

.project-preview-letter {
  font-size: 3rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.9);
}

.project-card-body {
  padding: var(--space-5) var(--space-6) var(--space-6);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.project-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-3);
}

.project-category {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-accent);
}

.project-links {
  display: flex;
  gap: var(--space-1);
}

.project-link {
  display: flex;
  padding: var(--space-2);
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.project-link:hover {
  color: var(--color-accent);
  background: var(--color-accent-soft);
}

.project-title {
  font-size: var(--text-xl);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-2);
}

.project-description {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
  flex: 1;
  line-height: 1.65;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.project-tech li {
  font-size: var(--text-xs);
  font-weight: 500;
  padding: var(--space-1) var(--space-3);
  background: var(--color-bg-muted);
  border-radius: 999px;
  color: var(--color-text-secondary);
}

.projects-cta {
  display: flex;
  justify-content: center;
  margin-top: var(--space-12);
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: start;
}

.contact-card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
}

.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  margin-bottom: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
}

.form-input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-family: inherit;
  font-size: var(--text-base);
  color: var(--color-text-primary);
  background: var(--color-bg);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 4px var(--color-accent-soft);
}

.form-textarea {
  resize: vertical;
  min-height: 140px;
}

.form-submit {
  width: 100%;
}

.contact-aside p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}

.contact-socials {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-8);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  color: var(--color-text-secondary);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.social-link:hover {
  color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

@media (max-width: 900px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

/* Footer */
.footer {
  padding: var(--space-16) 0 var(--space-10);
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-elevated);
}

.footer-content {
  text-align: center;
}

.footer-note {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2);
  font-family: var(--font-mono);
}

.footer-copyright {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.footer-main {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-8);
  padding-bottom: var(--space-8);
  margin-bottom: var(--space-6);
  border-bottom: 1px solid var(--color-border);
  text-align: left;
}

.footer-brand .nav-logo { display: block; margin-bottom: var(--space-2); }

.footer-links {
  display: flex;
  gap: var(--space-6);
}

.footer-links .nav-link { color: var(--color-text-secondary); }
.footer-links .nav-link:hover { color: var(--color-text-primary); }

.footer-socials .social-link { width: 38px; height: 38px; }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* NOTE: mobile footer overrides now live solely in the 600px breakpoint below,
   so desktop styles above are untouched and there's a single source of truth
   for small screens instead of two competing breakpoints. */

/* Page header (subpages) */
.page-hero {
  padding: calc(var(--nav-height) + var(--space-12)) 0 var(--space-10);
  text-align: center;
}

.page-hero .section-lead {
  margin-left: auto;
  margin-right: auto;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-8);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.back-link:hover {
  color: var(--color-accent);
}

/* Certificates */
.certs-page .stats-bar {
  display: flex;
  justify-content: center;
  gap: var(--space-12);
  flex-wrap: wrap;
  margin-top: var(--space-8);
}

.stat-item {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-text-primary);
}

.stat-label {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
}

.earned-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-6);
}

.cert-card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.cert-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.cert-image-wrap {
  position: relative;
  aspect-ratio: 16/9;
  background: var(--color-bg-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
}

.cert-badge-square img {
  max-height: 120px;
  width: auto;
  object-fit: contain;
}

.cert-badge {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--text-xs);
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--color-bg-elevated);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

.cert-badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-success);
}

.cert-body {
  padding: var(--space-5) var(--space-6) var(--space-6);
}

.cert-issuer-row {
  display: flex;
  justify-content: space-between;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}

.cert-title {
  font-weight: 600;
  font-size: var(--text-base);
  margin-bottom: var(--space-4);
  line-height: 1.4;
}

.cert-footer {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.cert-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-accent);
}

.cert-id {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.content-section.is-hidden {
  display: none;
}

.section-heading {
  font-size: var(--text-xl);
  font-weight: 600;
  margin-bottom: var(--space-6);
}

.roadmap-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.roadmap-item {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-5);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.roadmap-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  margin-top: 6px;
  flex-shrink: 0;
}

.roadmap-dot.in-progress {
  background: var(--color-accent);
}

.roadmap-dot.planned {
  background: var(--color-text-muted);
}

.roadmap-top {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
  margin-bottom: var(--space-1);
}

.roadmap-title {
  font-weight: 600;
}

.roadmap-tag {
  font-size: var(--text-xs);
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 999px;
}

.roadmap-tag.in-progress {
  background: var(--color-accent-soft);
  color: var(--color-accent);
}

.roadmap-tag.planned {
  background: var(--color-bg-muted);
  color: var(--color-text-secondary);
}

.roadmap-meta {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

/* Reveal */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

.project-card.reveal[data-delay="0"] { transition-delay: 0ms; }
.project-card.reveal[data-delay="80"] { transition-delay: 80ms; }
.project-card.reveal[data-delay="160"] { transition-delay: 160ms; }
.project-card.reveal[data-delay="240"] { transition-delay: 240ms; }

@media (max-width: 768px) {
  .section {
    padding: var(--space-16) 0;
  }
  .hero-scroll-hint {
    display: none;
  }
  .projects-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-4);
  }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
}

/* Legacy aliases (project detail pages) */
:root {
  --color-bg-card: var(--color-bg-elevated);
  --color-accent-dim: var(--color-accent-hover);
  --shadow-glow: var(--shadow-md);
  --shadow-glow-strong: var(--shadow-lg);
  --color-border-hover: var(--color-border-strong);
}

.terminal-prompt {
  color: var(--color-accent);
  font-weight: 600;
}

.scanlines {
  display: none;
}

/* Mobile phone fit-and-finish */
@media (max-width: 600px) {
  .hero {
    padding: calc(var(--nav-height) + var(--space-8)) var(--space-4) var(--space-12);
    min-height: calc(100vh - var(--nav-height));
  }
  .hero-eyebrow {
    font-size: var(--text-xs);
    padding: var(--space-1) var(--space-3);
  }
  .hero-actions .btn {
    width: 100%;
  }
  .about-card,
  .contact-card {
    padding: var(--space-5);
  }
  .about-photo {
    max-width: 220px;
  }
  .skills-marquee {
    padding: var(--space-6) 0;
  }
  .marquee-content {
    gap: var(--space-4);
  }
  .skill-item {
    min-width: 96px;
    padding: var(--space-3);
  }
  .skill-icon-img {
    width: 32px;
    height: 32px;
  }
  .project-card-body {
    padding: var(--space-4) var(--space-5) var(--space-5);
  }
  .stats-bar {
    gap: var(--space-6) !important;
  }
  .earned-grid,
  .projects-grid {
    grid-template-columns: 1fr;
  }

  /* Footer — mobile */
  .footer {
    padding: var(--space-10) 0 var(--space-6);
  }

  .footer-main {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--space-6);
    padding-bottom: var(--space-6);
    margin-bottom: var(--space-6);
  }

  .footer-brand {
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .footer-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-2) var(--space-5);
    row-gap: var(--space-3);
  }

  .footer-socials.footer-socials {
    gap: var(--space-3);
    justify-content: center;
  }

  .footer-socials .social-link {
    width: 38px;
    height: 38px;
  }

  .footer-note {
    font-size: var(--text-xs);
  }

  .footer-bottom {
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    text-align: center;
  }

  .footer-copyright {
    line-height: 1.5;
  }

  .footer-bottom .footer-legal {
    order: -1;
    white-space: nowrap;
    font-size: clamp(0.6rem, 2.8vw, 0.7rem);
  }
}

@media (max-width: 380px) {
  .hero-title {
    font-size: 2.1rem;
  }
  .section-title {
    font-size: var(--text-2xl);
  }
  .nav-logo {
    font-size: var(--text-base);
  }
  .footer-links {
    gap: var(--space-3);
  }
  .footer-copyright {
    font-size: 0.7rem;
  }
  .about-card,
  .contact-card {
    padding: var(--space-4);
  }
}

/* Dark mode overrides */
[data-theme="dark"] {
  --color-bg: #0d0d0f;
  --color-bg-elevated: #1a1a1d;
  --color-bg-muted: #232326;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-strong: rgba(255, 255, 255, 0.14);

  --color-text-primary: #f5f5f7;
  --color-text-secondary: #a1a1a6;
  --color-text-muted: #7d7d82;

  --color-accent: #2997ff;
  --color-accent-hover: #47a7ff;
  --color-accent-soft: rgba(41, 151, 255, 0.16);
  --color-accent-glow: rgba(41, 151, 255, 0.1);
}

[data-theme="dark"] .project-preview-frame iframe {
  background: #1a1a1d;
}

/* Theme toggle button */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-bg-elevated);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

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

.theme-toggle svg {
  width: 18px;
  height: 18px;
}

.theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: block; }

/* Auto dark mode kad korisnik nije ručno birao temu */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-bg: #0d0d0f;
    --color-bg-elevated: #1a1a1d;
    --color-bg-muted: #232326;
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-strong: rgba(255, 255, 255, 0.14);

    --color-text-primary: #f5f5f7;
    --color-text-secondary: #a1a1a6;
    --color-text-muted: #7d7d82;

    --color-accent: #2997ff;
    --color-accent-hover: #47a7ff;
    --color-accent-soft: rgba(41, 151, 255, 0.16);
    --color-accent-glow: rgba(41, 151, 255, 0.1);
  }

  :root:not([data-theme="light"]) .project-preview-frame iframe {
    background: #1a1a1d;
  }

  :root:not([data-theme="light"]) .theme-toggle .icon-sun { display: none; }
  :root:not([data-theme="light"]) .theme-toggle .icon-moon { display: block; }
}


/* Custom cursor */
/* Premium cursor glow — normalan kursor ostaje vidljiv */
.cursor-glow {
  position: fixed;
  top: 0;
  left: 0;
  width: 160px;
  height: 160px;
  pointer-events: none;
  z-index: 9999;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, var(--color-accent-glow) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.4s ease, width 0.5s cubic-bezier(0.4, 0, 0.2, 1), height 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform;
  filter: blur(4px);
}

.cursor-glow.is-visible {
  opacity: 1;
}

.cursor-glow.is-hovering {
  width: 240px;
  height: 240px;
}

/* Sakrij na touch uređajima */
@media (hover: none), (pointer: coarse) {
  .cursor-glow {
    display: none !important;
  }
}


/* Cookie consent banner */
.cookie-consent {
  position: fixed;
  bottom: var(--space-4);
  left: var(--space-4);
  right: var(--space-4);
  max-width: 640px;
  margin: 0 auto;
  z-index: 9998;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-5) var(--space-6);
  transform: translateY(120%);
  opacity: 0;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.4s ease;
}

.cookie-consent.is-visible {
  transform: translateY(0);
  opacity: 1;
}

.cookie-consent__text {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-4);
}

.cookie-consent__text a {
  color: var(--color-accent);
  font-weight: 600;
  text-decoration: underline;
}

.cookie-consent__actions {
  display: flex;
  justify-content: flex-end;
}

@media (max-width: 480px) {
  .cookie-consent {
    left: var(--space-3);
    right: var(--space-3);
    bottom: var(--space-3);
    padding: var(--space-4);
  }
  .cookie-consent__actions {
    justify-content: stretch;
  }
  .cookie-consent__actions .btn {
    width: 100%;
  }
}