/* ============================================================
   DESIGN SYSTEM — CSS CUSTOM PROPERTIES
   ============================================================ */
:root {
  --navy: #0f172a;
  --navy-800: #1e293b;
  --navy-700: #334155;
  --accent: #6366f1;
  --accent-dark: #4f46e5;
  --accent-light: #818cf8;
  --accent-glow: rgba(99,102,241,0.12);
  --white: #ffffff;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --text-dark: #0f172a;
  --text-body: #334155;
  --text-muted: #64748b;
  --font-display: 'Plus Jakarta Sans', sans-serif;
  --font-body: 'Inter', sans-serif;
  --section-py: 6rem;
  --container-max: 1200px;
  --transition: 0.3s ease;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.10);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.18);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --radius-full: 9999px;
}

/* ============================================================
   BASE RESET
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-body);
  color: var(--text-body);
  background: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { background: none; border: none; cursor: pointer; font: inherit; }

/* ============================================================
   LAYOUT UTILITIES
   ============================================================ */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}
.section-py { padding: var(--section-py) 0; }

/* ============================================================
   SCROLL ANIMATIONS
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.is-visible,
.reveal-left.is-visible,
.reveal-right.is-visible {
  opacity: 1;
  transform: translate(0, 0);
}
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }

/* ============================================================
   SECTION HEADER
   ============================================================ */
.section-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.65rem;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  font-weight: 700;
  color: var(--text-dark);
  line-height: 1.2;
  margin-bottom: 0.5rem;
}
.section-divider {
  width: 52px;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--accent-light));
  border-radius: var(--radius-full);
  margin: 1rem auto 0;
}
.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-full);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  line-height: 1;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: var(--white);
  box-shadow: 0 4px 20px rgba(99,102,241,0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(99,102,241,0.45);
}
.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.45);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--white);
  transform: translateY(-2px);
}

/* ============================================================
   NAVBAR
   ============================================================ */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1.35rem 0;
  transition: all 0.4s ease;
}
#navbar.scrolled {
  background: rgba(15,23,42,0.96);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  padding: 0.9rem 0;
  box-shadow: 0 2px 24px rgba(0,0,0,0.22);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}
.nav-brand {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.02em;
  flex-shrink: 0;
}
.nav-brand span { color: var(--accent-light); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.nav-link {
  font-size: 0.93rem;
  font-weight: 500;
  color: rgba(255,255,255,0.75);
  transition: color var(--transition);
  position: relative;
  white-space: nowrap;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-light);
  border-radius: var(--radius-full);
  transition: width var(--transition);
}
.nav-link:hover,
.nav-link.active { color: var(--white); }
.nav-link:hover::after,
.nav-link.active::after { width: 100%; }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  flex-shrink: 0;
  background: none;
  border: none;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: var(--radius-full);
  transition: all var(--transition);
}
.nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ============================================================
   HERO SECTION
   ============================================================ */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  background: var(--navy);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 60% at 25% 55%, rgba(99,102,241,0.18) 0%, transparent 65%),
    radial-gradient(ellipse 50% 45% at 75% 20%, rgba(129,140,248,0.12) 0%, transparent 55%),
    linear-gradient(180deg, #0d1526 0%, #0f172a 60%, #111827 100%);
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(99,102,241,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99,102,241,0.04) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 30%, transparent 80%);
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 820px;
  padding: 5rem 1.5rem 2rem;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(99,102,241,0.12);
  border: 1px solid rgba(99,102,241,0.28);
  border-radius: var(--radius-full);
  padding: 0.45rem 1.1rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent-light);
  margin-bottom: 1.75rem;
  animation: fadeInDown 0.7s ease forwards;
}
.hero-badge i { font-size: 0.78rem; color: #34d399; }
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 4.4rem);
  font-weight: 800;
  color: var(--white);
  line-height: 1.1;
  margin-bottom: 1.25rem;
  animation: fadeInUp 0.8s ease 0.2s both;
  letter-spacing: -0.02em;
}
.hero-typewriter {
  display: block;
  font-size: clamp(1rem, 2.5vw, 1.45rem);
  font-weight: 600;
  color: var(--accent-light);
  margin-top: 0.6rem;
  min-height: 2em;
}
.cursor {
  display: inline-block;
  width: 2px;
  height: 1.1em;
  background: var(--accent-light);
  margin-left: 2px;
  vertical-align: middle;
  animation: blink 1s step-end infinite;
}
@keyframes blink { 0%, 50% { opacity: 1; } 51%, 100% { opacity: 0; } }
.hero-subtitle {
  font-size: clamp(0.95rem, 2vw, 1.1rem);
  color: rgba(255,255,255,0.6);
  line-height: 1.75;
  max-width: 560px;
  margin: 0 auto 2.5rem;
  animation: fadeInUp 0.8s ease 0.4s both;
}
.hero-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease 0.6s both;
}
.hero-scroll {
  position: absolute;
  bottom: 2.25rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  color: rgba(255,255,255,0.35);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  animation: scrollBounce 2.5s ease-in-out infinite;
}
.hero-scroll i { font-size: 1.1rem; }
@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 0.4; }
  50% { transform: translateX(-50%) translateY(7px); opacity: 0.7; }
}
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-18px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   ABOUT SECTION
   ============================================================ */
#about { background: var(--gray-50); }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 5rem;
  align-items: center;
}
.about-visual { position: relative; }
.about-avatar-wrap {
  position: relative;
  display: inline-block;
  width: 100%;
  max-width: 380px;
}
.about-avatar-bg {
  position: absolute;
  inset: 24px 24px -24px -24px;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  border-radius: var(--radius-lg);
  opacity: 0.12;
}
.about-avatar {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  max-width: 360px;
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, var(--navy-800) 0%, var(--navy) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 2px solid rgba(99,102,241,0.18);
  box-shadow: var(--shadow-lg);
}
.about-avatar-initials {
  font-family: var(--font-display);
  font-size: 5.5rem;
  font-weight: 800;
  color: var(--accent-light);
  opacity: 0.22;
  user-select: none;
  letter-spacing: -0.04em;
}
.about-avatar-icon {
  position: absolute;
  font-size: 7rem;
  color: var(--accent-light);
  opacity: 0.06;
}
.about-card {
  position: absolute;
  background: var(--white);
  border-radius: var(--radius);
  padding: 0.85rem 1.1rem;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-dark);
  white-space: nowrap;
}
.about-card-icon {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  flex-shrink: 0;
  background: rgba(99,102,241,0.1);
  color: var(--accent);
}
.about-card-icon--green { background: rgba(16,185,129,0.1); color: #10b981; }
.about-card-label { font-size: 0.75rem; color: var(--text-muted); font-weight: 500; }
.about-card-1 { bottom: -18px; right: -18px; }
.about-card-2 { top: 32px; left: -24px; }
.about-text .section-label { text-align: left; }
.about-text .section-title { text-align: left; }
.about-bio {
  font-size: 1.05rem;
  color: var(--text-body);
  line-height: 1.78;
  margin: 1.5rem 0 1.75rem;
}
.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-bottom: 2rem;
}
.about-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--white);
  border: 1.5px solid var(--gray-200);
  color: var(--text-body);
  font-size: 0.83rem;
  font-weight: 500;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  transition: all var(--transition);
}
.about-tag i { color: var(--accent); font-size: 0.72rem; }
.about-tag:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
}

/* ============================================================
   SKILLS SECTION
   ============================================================ */
#skills { background: var(--white); }
.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}
.skill-card {
  background: var(--gray-50);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 2rem 1.5rem;
  text-align: center;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.skill-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-light));
  transform: scaleX(0);
  transition: transform var(--transition);
  transform-origin: left;
}
.skill-card:hover {
  border-color: rgba(99,102,241,0.35);
  box-shadow: var(--shadow-md), 0 0 0 1px rgba(99,102,241,0.08);
  transform: translateY(-5px);
}
.skill-card:hover::before { transform: scaleX(1); }
.skill-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, rgba(99,102,241,0.1), rgba(129,140,248,0.08));
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  color: var(--accent);
  margin: 0 auto 1.25rem;
  transition: all var(--transition);
}
.skill-card:hover .skill-icon {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: var(--white);
  transform: scale(1.06) rotate(-3deg);
}
.skill-title {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 1rem;
}
.skill-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.4rem;
}
.skill-tag {
  font-size: 0.76rem;
  font-weight: 500;
  background: var(--white);
  border: 1px solid var(--gray-200);
  color: var(--text-muted);
  padding: 0.24rem 0.65rem;
  border-radius: var(--radius-full);
  transition: all var(--transition);
}
.skill-card:hover .skill-tag {
  border-color: rgba(99,102,241,0.3);
  color: var(--accent);
  background: var(--accent-glow);
}

/* ============================================================
   PORTFOLIO SECTION
   ============================================================ */
#portfolio { background: var(--gray-50); }
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
.portfolio-item {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  background: var(--navy-800);
  aspect-ratio: 4/3;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}
.portfolio-item:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}
.portfolio-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.55s ease;
}
.portfolio-item:hover .portfolio-img { transform: scale(1.07); }
.portfolio-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(175deg, transparent 35%, rgba(10,18,38,0.92) 100%);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-end;
  padding: 1.4rem;
  opacity: 0;
  transition: opacity 0.35s ease;
}
.portfolio-item:hover .portfolio-overlay { opacity: 1; }
.portfolio-category {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-light);
  margin-bottom: 0.3rem;
}
.portfolio-name {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
}
.portfolio-expand {
  position: absolute;
  top: 0.85rem;
  right: 0.85rem;
  width: 34px;
  height: 34px;
  background: rgba(255,255,255,0.14);
  backdrop-filter: blur(4px);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 0.82rem;
  opacity: 0;
  transition: all var(--transition);
}
.portfolio-item:hover .portfolio-expand { opacity: 1; }

/* ============================================================
   LIGHTBOX
   ============================================================ */
#lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(5,8,22,0.93);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  padding: 2rem;
}
#lightbox.active {
  opacity: 1;
  pointer-events: all;
}
.lightbox-img {
  max-width: 90vw;
  max-height: 78vh;
  border-radius: var(--radius);
  object-fit: contain;
  box-shadow: var(--shadow-xl);
  transform: scale(0.88);
  transition: transform 0.35s cubic-bezier(0.34,1.56,0.64,1);
}
#lightbox.active .lightbox-img { transform: scale(1); }
.lightbox-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  width: 44px;
  height: 44px;
  background: rgba(255,255,255,0.09);
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.2rem;
  cursor: pointer;
  transition: all var(--transition);
}
.lightbox-close:hover { background: rgba(255,255,255,0.2); transform: scale(1.08); }
.lightbox-caption {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  white-space: nowrap;
}
.lightbox-cat {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-light);
  margin-bottom: 0.2rem;
}
.lightbox-title {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--white);
  font-size: 1.1rem;
}

/* ============================================================
   CONTACT SECTION
   ============================================================ */
#contact { background: var(--white); }
.contact-intro {
  color: var(--text-muted);
  margin-top: 1rem;
  font-size: 1.05rem;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}
.contact-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  max-width: 620px;
  margin: 2rem auto 0;
}
.contact-card {
  background: var(--gray-50);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 2.25rem 1.5rem;
  text-align: center;
  transition: all var(--transition);
  text-decoration: none;
  color: inherit;
  display: block;
}
.contact-card:hover {
  border-color: rgba(99,102,241,0.4);
  transform: translateY(-5px);
  box-shadow: var(--shadow-md), 0 0 0 1px rgba(99,102,241,0.08);
}
.contact-card-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--white);
  margin: 0 auto 1.1rem;
  transition: transform var(--transition);
  box-shadow: 0 4px 16px rgba(99,102,241,0.3);
}
.contact-card:hover .contact-card-icon { transform: scale(1.08) rotate(-4deg); }
.contact-card-label {
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}
.contact-card-value {
  font-weight: 600;
  color: var(--text-dark);
  font-size: 0.9rem;
  word-break: break-all;
  line-height: 1.4;
}

/* ============================================================
   FOOTER
   ============================================================ */
footer {
  background: var(--navy);
  color: var(--white);
  padding: 3rem 0;
}
.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  text-align: center;
}
.footer-brand {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.footer-brand span { color: var(--accent-light); }
.footer-social {
  display: flex;
  gap: 0.75rem;
}
.social-link {
  width: 44px;
  height: 44px;
  border: 1.5px solid rgba(255,255,255,0.18);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.65);
  font-size: 1.05rem;
  transition: all var(--transition);
}
.social-link:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--white);
  transform: translateY(-3px);
  box-shadow: 0 6px 18px rgba(99,102,241,0.4);
}
.footer-copy {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.35);
}

/* ============================================================
   CONTACT FORM
   ============================================================ */
.contact-form {
  max-width: 720px;
  margin: 3rem auto 0;
  background: var(--gray-50);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
}
.cf-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-bottom: 1.25rem;
}
.cf-group {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}
.cf-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-dark);
  letter-spacing: 0.02em;
}
.cf-input {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--text-dark);
  background: var(--white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  width: 100%;
}
.cf-input::placeholder { color: var(--gray-400); }
.cf-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(99,102,241,0.1);
}
.cf-input.cf-error {
  border-color: #ef4444;
  box-shadow: 0 0 0 3px rgba(239,68,68,0.1);
}
.cf-textarea {
  resize: vertical;
  min-height: 130px;
  line-height: 1.6;
}
.cf-footer {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}
.cf-submit {
  flex-shrink: 0;
  position: relative;
}
.cf-submit:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}
.cf-submit .fa-spinner { animation: cf-spin 0.8s linear infinite; }
@keyframes cf-spin { to { transform: rotate(360deg); } }
.cf-status {
  font-size: 0.9rem;
  font-weight: 500;
  line-height: 1.4;
}
.cf-status.cf-status--ok {
  color: #10b981;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.cf-status.cf-status--err {
  color: #ef4444;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .skills-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { gap: 3rem; }
}

@media (max-width: 768px) {
  :root { --section-py: 4.5rem; }

  .cf-row { grid-template-columns: 1fr; }
  .contact-form { padding: 1.75rem 1.25rem; }

  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: min(300px, 85vw);
    height: 100dvh;
    background: rgba(15,23,42,0.98);
    backdrop-filter: blur(14px);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    transition: right 0.4s cubic-bezier(0.77,0,0.175,1);
    box-shadow: -4px 0 40px rgba(0,0,0,0.35);
    z-index: 999;
  }
  .nav-links.open { right: 0; }
  .nav-link { font-size: 1.15rem; }

  .about-grid { grid-template-columns: 1fr; }
  .about-visual { display: none; }

  .portfolio-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-cards { max-width: 360px; }
}

@media (max-width: 520px) {
  :root { --section-py: 3.5rem; }
  .portfolio-grid { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: 1fr; }
  .contact-cards { grid-template-columns: 1fr; max-width: 300px; }
  .hero-cta { flex-direction: column; align-items: stretch; text-align: center; }
  .hero-cta .btn { justify-content: center; }
}