/* ========================================
   sergio.dev — Landing Page / Portfolio
   ======================================== */

/* ---- Nav ---- */
.lp-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: all 0.4s ease;
  padding: 16px 0;
}
.lp-nav--transparent { background: transparent; }
.lp-nav--solid {
  background: rgba(6,6,15,0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  padding: 12px 0;
}
.lp-nav__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.lp-nav__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 22px;
}
.lp-nav__logo {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 13px;
  color: #fff;
}
.lp-nav__links {
  display: flex;
  gap: 32px;
}
.lp-nav__link {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
  position: relative;
}
.lp-nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition-normal);
}
.lp-nav__link:hover { color: #fff; }
.lp-nav__link:hover::after { width: 100%; }
.lp-nav__actions { display: flex; align-items: center; gap: 16px; }
.lp-nav__btn {
  padding: 10px 24px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: #fff;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 14px;
  transition: all var(--transition-normal);
}
.lp-nav__btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(0,102,255,0.4);
}
.lp-nav__mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}
.lp-nav__mobile-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* ---- Hero ---- */
.lp-hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 120px 0 80px;
}
.lp-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.lp-hero__bg canvas {
  width: 100%;
  height: 100%;
}
.lp-hero__gradient {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    radial-gradient(ellipse 80% 60% at 50% 40%, rgba(0,102,255,0.08) 0%, transparent 70%),
    radial-gradient(ellipse 60% 40% at 80% 20%, rgba(123,97,255,0.06) 0%, transparent 60%),
    radial-gradient(ellipse 50% 50% at 20% 80%, rgba(0,212,255,0.04) 0%, transparent 60%);
}
.lp-hero__content {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.lp-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(0,102,255,0.1);
  border: 1px solid rgba(0,102,255,0.2);
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 32px;
  animation: heroFadeUp 0.8s ease 0.2s both;
}
.lp-hero__badge-dot {
  width: 8px;
  height: 8px;
  background: var(--color-success);
  border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.5); }
}
.lp-hero__title {
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  animation: heroFadeUp 0.8s ease 0.4s both;
}
.lp-hero__title-highlight {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent), var(--color-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.lp-hero__subtitle {
  font-size: clamp(17px, 2vw, 20px);
  color: var(--color-text-secondary);
  max-width: 600px;
  line-height: 1.7;
  margin-bottom: 20px;
  animation: heroFadeUp 0.8s ease 0.6s both;
}
.lp-hero__typing-wrapper {
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 700;
  min-height: 44px;
  margin-bottom: 40px;
  animation: heroFadeUp 0.8s ease 0.7s both;
}
.lp-hero__typing {
  color: var(--color-accent);
  border-right: 2px solid var(--color-accent);
  padding-right: 4px;
  animation: blink 1s step-end infinite;
}
@keyframes blink {
  50% { border-color: transparent; }
}
.lp-hero__actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  animation: heroFadeUp 0.8s ease 0.8s both;
}
.lp-hero__btn-primary {
  padding: 16px 36px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: #fff;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 16px;
  transition: all var(--transition-normal);
  box-shadow: 0 4px 30px rgba(0,102,255,0.35);
}
.lp-hero__btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 40px rgba(0,102,255,0.5);
}
.lp-hero__btn-ghost {
  padding: 16px 36px;
  background: transparent;
  color: #fff;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 16px;
  transition: all var(--transition-normal);
}
.lp-hero__btn-ghost:hover {
  background: var(--color-bg-elevated);
  border-color: var(--color-primary);
}
@keyframes heroFadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---- Stats ---- */
.lp-stats {
  position: relative;
  padding: 60px 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  background: linear-gradient(180deg, rgba(0,102,255,0.03) 0%, transparent 100%);
}
.lp-stats__grid {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  text-align: center;
}
.lp-stats__item { display: flex; flex-direction: column; align-items: center; gap: 8px; }
.lp-stats__number {
  font-size: 48px;
  font-weight: 900;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.lp-stats__label {
  font-size: 15px;
  color: var(--color-text-muted);
  font-weight: 500;
}

/* ---- Section (shared) ---- */
.lp-section {
  padding: 120px 0;
  position: relative;
}
.lp-section__header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 64px;
}
.lp-section__tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-primary);
  margin-bottom: 16px;
}
.lp-section__title {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}
.lp-section__subtitle {
  font-size: 17px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ---- About ---- */
.lp-about__grid {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 64px;
  align-items: center;
}
.lp-about__photo {
  position: relative;
}
.lp-about__photo-frame {
  width: 100%;
  aspect-ratio: 4/5;
  background: linear-gradient(135deg, rgba(0,102,255,0.12), rgba(123,97,255,0.08));
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}
.lp-about__photo-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: inherit;
}
.lp-about__photo-initials {
  font-size: 120px;
  font-weight: 900;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.3;
}
.lp-about__photo-frame::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent), var(--color-purple));
  z-index: -1;
  opacity: 0.3;
}
.lp-about__info h3 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 8px;
}
.lp-about__role {
  font-size: 18px;
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: 24px;
}
.lp-about__bio {
  font-size: 16px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 32px;
}
.lp-about__details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 32px;
}
.lp-about__detail {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.lp-about__detail-label {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
}
.lp-about__detail-value {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
}
.lp-about__social {
  display: flex;
  gap: 12px;
}
.lp-about__social-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-secondary);
  transition: all var(--transition-normal);
}
.lp-about__social-link:hover {
  border-color: var(--color-primary);
  color: var(--color-text);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

/* ---- Skills ---- */
.lp-skills {
  background: linear-gradient(180deg, transparent, rgba(0,102,255,0.04) 30%, rgba(123,97,255,0.04) 70%, transparent);
}
.lp-skills__grid {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.lp-skill-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: all var(--transition-slow);
  position: relative;
  overflow: hidden;
}
.lp-skill-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  opacity: 0;
  transition: opacity var(--transition-normal);
}
.lp-skill-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}
.lp-skill-card:hover::before { opacity: 1; }
.lp-skill-card__icon {
  font-size: 32px;
  margin-bottom: 20px;
}
.lp-skill-card__title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}
.lp-skill-card__desc {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
}
.lp-skill-card__techs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.lp-skill-card__tech {
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
  background: rgba(0,102,255,0.08);
  color: var(--color-accent);
  border: 1px solid rgba(0,102,255,0.15);
}

/* ---- Experience Timeline ---- */
.lp-timeline {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
}
.lp-timeline::before {
  content: '';
  position: absolute;
  left: 39px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--color-primary), var(--color-accent), var(--color-purple));
}
.lp-timeline__item {
  display: flex;
  gap: 32px;
  align-items: flex-start;
  padding: 24px 0;
  position: relative;
}
.lp-timeline__dot-wrapper {
  width: 80px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.lp-timeline__dot {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 4px solid var(--color-bg);
  box-shadow: 0 0 0 2px var(--color-primary);
  position: relative;
  z-index: 1;
}
.lp-timeline__dot--current {
  background: var(--color-success);
  box-shadow: 0 0 0 2px var(--color-success), 0 0 20px rgba(0,255,136,0.3);
}
.lp-timeline__content {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  flex: 1;
  transition: all var(--transition-slow);
}
.lp-timeline__content:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow);
}
.lp-timeline__period {
  display: inline-block;
  padding: 4px 14px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 700;
  background: linear-gradient(135deg, rgba(0,102,255,0.15), rgba(123,97,255,0.15));
  color: var(--color-accent);
  border: 1px solid rgba(0,102,255,0.2);
  margin-bottom: 12px;
}
.lp-timeline__role { font-size: 20px; font-weight: 700; margin-bottom: 4px; }
.lp-timeline__company {
  font-size: 15px;
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: 12px;
}
.lp-timeline__desc {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}
.lp-timeline__techs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 16px;
}
.lp-timeline__tech {
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 600;
  background: var(--color-bg-elevated);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

/* ---- Projects ---- */
.lp-projects__grid {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.lp-project-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px;
  transition: all var(--transition-slow);
  position: relative;
  overflow: hidden;
}
.lp-project-card--featured {
  grid-column: span 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  background: linear-gradient(135deg, rgba(0,102,255,0.05), rgba(0,212,255,0.03));
  border-color: rgba(0,102,255,0.2);
}
.lp-project-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}
.lp-project-card__badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
  background: rgba(0,102,255,0.1);
  color: var(--color-accent);
  margin-bottom: 16px;
}
.lp-project-card__title {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 12px;
}
.lp-project-card__desc {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
}
.lp-project-card__techs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}
.lp-project-card__tech {
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 600;
  background: var(--color-bg-elevated);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}
.lp-project-card__highlights {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.lp-project-card__highlights li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.5;
}
.lp-project-card__highlights li::before {
  content: '\2726';
  color: var(--color-success);
  flex-shrink: 0;
  margin-top: 2px;
}
.lp-project-card__visual {
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: 24px;
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
}
.lp-project-card__visual-icon {
  font-size: 80px;
  opacity: 0.5;
}

/* ---- Contact ---- */
.lp-contact {
  background: linear-gradient(180deg, transparent, rgba(0,102,255,0.04) 50%, transparent);
}
.lp-contact__grid {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 64px;
  align-items: start;
}
.lp-contact__info h3 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 16px;
}
.lp-contact__info p {
  font-size: 16px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 32px;
}
.lp-contact__channels {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.lp-contact__channel {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
}
.lp-contact__channel:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow);
}
.lp-contact__channel-icon {
  font-size: 24px;
}
.lp-contact__channel-label {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
}
.lp-contact__channel-value {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
}
.lp-contact__form-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
}
.lp-contact__form-title {
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 24px;
}
.lp-contact__field {
  margin-bottom: 20px;
}
.lp-contact__field label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}
.lp-contact__field input,
.lp-contact__field textarea,
.lp-contact__field select {
  width: 100%;
  padding: 14px 16px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: 15px;
  transition: all var(--transition-fast);
  outline: none;
}
.lp-contact__field input:focus,
.lp-contact__field textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0,102,255,0.15);
}
.lp-contact__field input::placeholder,
.lp-contact__field textarea::placeholder { color: var(--color-text-muted); }
.lp-contact__field textarea { resize: vertical; min-height: 120px; }
.lp-contact__submit {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-normal);
}
.lp-contact__submit:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(0,102,255,0.4);
}

/* ---- CTA ---- */
.lp-cta {
  padding: 120px 0;
  position: relative;
  overflow: hidden;
}
.lp-cta__bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0,102,255,0.1), rgba(123,97,255,0.1));
  z-index: 0;
}
.lp-cta__content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
  padding: 0 24px;
}
.lp-cta__title {
  font-size: clamp(32px, 4.5vw, 52px);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 20px;
}
.lp-cta__subtitle {
  font-size: 18px;
  color: var(--color-text-secondary);
  margin-bottom: 40px;
  line-height: 1.7;
}
.lp-cta__actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ---- Footer ---- */
.lp-footer {
  border-top: 1px solid var(--color-border);
  padding: 48px 0;
  background: var(--color-bg);
}
.lp-footer__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}
.lp-footer__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 18px;
}
.lp-footer__logo {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 12px;
  color: #fff;
}
.lp-footer__links { display: flex; gap: 24px; }
.lp-footer__links a {
  font-size: 14px;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}
.lp-footer__links a:hover { color: var(--color-text); }
.lp-footer__copy { font-size: 13px; color: var(--color-text-muted); }

/* ---- Scroll Reveal ---- */
.lp-reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
  animation: lpRevealFallback 0s ease 1.5s forwards;
}
.lp-reveal--visible {
  opacity: 1;
  transform: translateY(0);
  animation: none;
}
.lp-reveal--delay-1 { transition-delay: 0.1s; animation-delay: 1.6s; }
.lp-reveal--delay-2 { transition-delay: 0.2s; animation-delay: 1.7s; }
.lp-reveal--delay-3 { transition-delay: 0.3s; animation-delay: 1.8s; }
.lp-reveal--delay-4 { transition-delay: 0.4s; animation-delay: 1.9s; }
.lp-reveal--delay-5 { transition-delay: 0.5s; animation-delay: 2.0s; }
@keyframes lpRevealFallback {
  to { opacity: 1; transform: translateY(0); }
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .lp-about__grid { grid-template-columns: 1fr; gap: 40px; }
  .lp-skills__grid { grid-template-columns: repeat(2, 1fr); }
  .lp-projects__grid { grid-template-columns: 1fr; }
  .lp-project-card--featured { grid-column: span 1; grid-template-columns: 1fr; }
  .lp-contact__grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .lp-nav__links { display: none; }
  .lp-nav__links--open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(6,6,15,0.98);
    backdrop-filter: blur(20px);
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid var(--color-border);
  }
  .lp-nav__mobile-toggle { display: flex; }
  .lp-nav__actions .lp-nav__link { display: none; }

  .lp-stats__grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .lp-stats__number { font-size: 36px; }

  .lp-skills__grid { grid-template-columns: 1fr; }
  .lp-about__details { grid-template-columns: 1fr; }

  .lp-timeline::before { left: 19px; }
  .lp-timeline__dot-wrapper { width: 40px; }
  .lp-timeline__dot { width: 16px; height: 16px; }
  .lp-timeline__content { padding: 20px; }

  .lp-footer__inner { flex-direction: column; text-align: center; }
  .lp-footer__links { flex-wrap: wrap; justify-content: center; }
}

@media (max-width: 480px) {
  .lp-hero__actions { flex-direction: column; }
  .lp-hero__btn-primary, .lp-hero__btn-ghost { width: 100%; text-align: center; }
  .lp-stats__grid { grid-template-columns: repeat(2, 1fr); }
  .lp-cta__actions { flex-direction: column; align-items: center; }
  .lp-about__social { flex-direction: column; }
}

/* Language Switcher */
.lp-nav__lang {
  position: relative;
}

.lp-nav__lang-btn {
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--text-secondary, #94a3b8);
  padding: 0.35rem 0.75rem;
  border-radius: 0.5rem;
  cursor: pointer;
  font-size: 0.85rem;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.lp-nav__lang-btn:hover {
  border-color: rgba(255, 255, 255, 0.4);
  color: #fff;
}

.lp-nav__lang-menu {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  background: #1e293b;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 0.75rem;
  padding: 0.5rem;
  min-width: 160px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
  z-index: 100;
}

.lp-nav__lang-option {
  display: block;
  padding: 0.5rem 0.75rem;
  color: #94a3b8;
  text-decoration: none;
  border-radius: 0.5rem;
  font-size: 0.9rem;
  transition: all 0.15s;
}

.lp-nav__lang-option:hover,
.lp-nav__lang-option.active {
  background: rgba(99, 102, 241, 0.15);
  color: #818cf8;
}

.hidden {
  display: none !important;
}

/* ========== Light Mode ========== */
[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #f1f5f9;
  --bg-card: #ffffff;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --border-color: rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .lp-hero,
[data-theme="light"] .lp-nav,
[data-theme="light"] .lp-footer {
  background: var(--bg-primary);
}

[data-theme="light"] .lp-hero__gradient {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.05), rgba(139, 92, 246, 0.05));
}

[data-theme="light"] .lp-hero__title,
[data-theme="light"] .lp-section__title,
[data-theme="light"] .lp-timeline__role,
[data-theme="light"] .lp-project-card__title,
[data-theme="light"] .lp-contact h3,
[data-theme="light"] .lp-cta__title {
  color: var(--text-primary);
}

[data-theme="light"] .lp-hero__subtitle,
[data-theme="light"] .lp-section__subtitle,
[data-theme="light"] .lp-about__bio,
[data-theme="light"] .lp-timeline__desc,
[data-theme="light"] .lp-project-card__desc,
[data-theme="light"] .lp-skill-card__desc {
  color: var(--text-secondary);
}

[data-theme="light"] .lp-section {
  background: var(--bg-primary);
}

[data-theme="light"] .lp-skills {
  background: var(--bg-secondary);
}

[data-theme="light"] .lp-skill-card,
[data-theme="light"] .lp-project-card,
[data-theme="light"] .lp-contact__form-card {
  background: var(--bg-card);
  border-color: var(--border-color);
}

[data-theme="light"] .lp-nav__link,
[data-theme="light"] .lp-nav__name,
[data-theme="light"] .lp-footer__links a,
[data-theme="light"] .lp-footer span {
  color: var(--text-secondary);
}

[data-theme="light"] .lp-nav__link:hover {
  color: var(--text-primary);
}

[data-theme="light"] .lp-stats {
  background: var(--bg-secondary);
}

[data-theme="light"] .lp-stats__number {
  color: var(--text-primary);
}

[data-theme="light"] .lp-stats__label {
  color: var(--text-secondary);
}

[data-theme="light"] .lp-timeline__content {
  background: var(--bg-card);
  border-color: var(--border-color);
}

[data-theme="light"] .lp-timeline__period,
[data-theme="light"] .lp-timeline__company {
  color: var(--text-secondary);
}

[data-theme="light"] .lp-contact__info {
  color: var(--text-secondary);
}

[data-theme="light"] .lp-contact__channel {
  background: var(--bg-card);
  border-color: var(--border-color);
}

[data-theme="light"] .lp-cta {
  background: var(--bg-secondary);
}

[data-theme="light"] .lp-cta__bg {
  opacity: 0.03;
}

[data-theme="light"] .lp-nav__lang-btn {
  border-color: var(--border-color);
  color: var(--text-secondary);
}

[data-theme="light"] .lp-nav__lang-menu {
  background: var(--bg-card);
  border-color: var(--border-color);
}

[data-theme="light"] .lp-nav__lang-option {
  color: var(--text-secondary);
}

[data-theme="light"] .lp-about__detail-label {
  color: var(--text-secondary);
}

[data-theme="light"] .lp-about__detail-value {
  color: var(--text-primary);
}

[data-theme="light"] .lp-skill-card__tech,
[data-theme="light"] .lp-timeline__tech,
[data-theme="light"] .lp-project-card__tech {
  background: rgba(99, 102, 241, 0.08);
  color: #6366f1;
}

[data-theme="light"] .lp-contact__field input,
[data-theme="light"] .lp-contact__field textarea {
  background: var(--bg-secondary);
  border-color: var(--border-color);
  color: var(--text-primary);
}

/* Theme toggle button */
.lp-nav__theme-btn {
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--text-secondary, #94a3b8);
  padding: 0.35rem 0.6rem;
  border-radius: 0.5rem;
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.2s;
  line-height: 1;
}

.lp-nav__theme-btn:hover {
  border-color: rgba(255, 255, 255, 0.4);
  color: #fff;
}

[data-theme="light"] .lp-nav__theme-btn {
  border-color: var(--border-color);
  color: var(--text-secondary);
}

[data-theme="light"] .lp-nav__theme-btn:hover {
  color: var(--text-primary);
}