:root {
  --bg: #020617;
  --bg-alt: #020617;
  --card: #020617;
  --card-soft: #020617;
  --border-soft: rgba(148, 163, 184, 0.25);
  --accent: #38bdf8;
  --accent-soft: rgba(56, 189, 248, 0.15);
  --accent-strong: #0ea5e9;
  --accent-alt: #6366f1;
  --text: #e5e7eb;
  --text-soft: #9ca3af;
  --danger: #f97373;
  --radius-xl: 1.75rem;
  --radius-lg: 1.2rem;
  --radius-md: 0.9rem;
  --shadow-soft: 0 18px 60px rgba(15, 23, 42, 0.85);
  --shadow-glow: 0 0 40px rgba(56, 189, 248, 0.25);
  --max-width: 1160px;
}

* {
  box-sizing: border-box;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Poppins", system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  background: radial-gradient(
      circle at top,
      rgba(56, 189, 248, 0.12),
      transparent 55%
    ),
    radial-gradient(
      circle at bottom,
      rgba(99, 102, 241, 0.14),
      transparent 55%
    ),
    var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
}

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

/* Layout */

.page {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 18px 18px 48px;
}

header {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(22px);
  background: linear-gradient(
    to bottom,
    rgba(2, 6, 23, 0.92),
    rgba(2, 6, 23, 0.75),
    transparent
  );
  border-bottom: 1px solid rgba(148, 163, 184, 0.25);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 14px 18px 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-badge {
  width: 32px;
  height: 32px;
  border-radius: 999px;
  background: radial-gradient(circle at 30% 30%, #38bdf8, #0f172a);
  box-shadow: var(--shadow-glow);
  position: relative;
  overflow: hidden;
}

.logo-badge::after {
  content: "";
  position: absolute;
  inset: 6px;
  border-radius: inherit;
  border: 1px solid rgba(15, 23, 42, 0.95);
  opacity: 0.8;
}

.logo-text-main {
  font-weight: 600;
  letter-spacing: 0.04em;
  font-size: 0.98rem;
}

.logo-text-sub {
  font-size: 0.78rem;
  color: var(--text-soft);
}

nav {
  display: flex;
  gap: 22px;
  align-items: center;
}

.nav-link {
  font-size: 0.86rem;
  color: var(--text-soft);
  padding-bottom: 4px;
  border-bottom: 1px solid transparent;
  cursor: pointer;
  transition: color 0.18s ease, border-color 0.18s ease,
    transform 0.18s ease;
}

.nav-link:hover {
  color: var(--accent);
  border-color: rgba(56, 189, 248, 0.7);
  transform: translateY(-1px);
}

.nav-link.active {
  color: var(--accent);
  border-color: rgba(56, 189, 248, 0.7);
}

.nav-btn {
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.4);
  font-size: 0.8rem;
  cursor: pointer;
  background: radial-gradient(
      circle at 0 0,
      rgba(56, 189, 248, 0.25),
      transparent 55%
    ),
    rgba(15, 23, 42, 0.92);
  color: var(--text);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: background 0.2s ease, transform 0.16s ease,
    box-shadow 0.18s ease, border-color 0.18s ease;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.95);
}

.nav-btn span {
  font-size: 0.9rem;
}

.nav-btn:hover {
  transform: translateY(-1px);
  border-color: rgba(56, 189, 248, 0.7);
  box-shadow: var(--shadow-glow);
}

.nav-btn-dot {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--accent);
}

.mobile-nav-toggle {
  display: none;
  border: none;
  background: transparent;
  cursor: pointer;
  color: var(--text-soft);
  font-size: 1.4rem;
}

.mobile-nav-menu {
  display: none;
  flex-direction: column;
  gap: 10px;
  padding: 10px 18px 14px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.mobile-nav-menu .nav-link {
  padding-top: 3px;
  padding-bottom: 6px;
}

main {
  padding-top: 20px;
}

/* Hero */

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1.1fr);
  gap: 30px;
  align-items: center;
  margin-top: 18px;
  margin-bottom: 40px;
}

.hero-left {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 12px 6px 6px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.5);
  background: rgba(15, 23, 42, 0.88);
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(18px);
  font-size: 0.78rem;
  color: var(--text-soft);
  width: fit-content;
}

.pill-dot {
  width: 23px;
  height: 23px;
  border-radius: 999px;
  background: radial-gradient(
    circle at 30% 30%,
    var(--accent),
    #0f172a 70%
  );
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-glow);
  font-size: 0.7rem;
}

.pill-dot span {
  font-size: 0.7rem;
  opacity: 0.92;
}

.hero-title {
  font-size: clamp(2rem, 3vw + 1rem, 3rem);
  line-height: 1.18;
  letter-spacing: 0.03em;
}

.hero-title span {
  background: linear-gradient(120deg, #38bdf8, #6366f1, #f97316, #38bdf8);
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: gradient-shift 3s ease infinite;
}

.hero-subtitle {
  font-size: 0.98rem;
  color: var(--text-soft);
  max-width: 500px;
}

.hero-subtitle-strong {
  color: #e5e7eb;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 6px;
  margin-bottom: 8px;
}

.btn-primary,
.btn-ghost {
  padding: 9px 16px;
  border-radius: 999px;
  font-size: 0.85rem;
  border: 1px solid transparent;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: transform 0.16s ease, box-shadow 0.16s ease,
    border-color 0.16s ease, background 0.16s ease, color 0.16s ease;
}

.btn-primary {
  background: linear-gradient(135deg, #0ea5e9, #6366f1);
  color: white;
  box-shadow: 0 16px 40px rgba(37, 99, 235, 0.5);
}

.btn-primary:hover {
  transform: translateY(-1px) translateX(0.5px);
  box-shadow: 0 22px 50px rgba(37, 99, 235, 0.7);
}

.btn-ghost {
  border-color: rgba(148, 163, 184, 0.55);
  color: var(--text-soft);
  background: rgba(15, 23, 42, 0.8);
}

.btn-ghost:hover {
  border-color: rgba(56, 189, 248, 0.65);
  color: var(--accent);
  box-shadow: var(--shadow-glow);
  background: rgba(15, 23, 42, 0.98);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 4px;
}

.hero-meta-item {
  font-size: 0.82rem;
  color: var(--text-soft);
  display: inline-flex;
  gap: 8px;
  align-items: center;
}

.hero-meta-dot {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.4);
}

.hero-right {
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-card {
  width: 100%;
  max-width: 380px;
  padding: 18px 18px 16px;
  border-radius: 26px;
  background: radial-gradient(
      circle at 0 0,
      rgba(56, 189, 248, 0.16),
      transparent 60%
    ),
    radial-gradient(
      circle at 100% 100%,
      rgba(99, 102, 241, 0.18),
      transparent 60%
    ),
    rgba(15, 23, 42, 0.98);
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(148, 163, 184, 0.45);
  position: relative;
  overflow: hidden;
  transition: transform 0.3s ease;
}

.hero-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
      circle at 10% 0%,
      rgba(248, 250, 252, 0.08),
      transparent 60%
    ),
    radial-gradient(
      circle at 90% 120%,
      rgba(15, 23, 42, 0.4),
      transparent 65%
    );
  opacity: 0.75;
  pointer-events: none;
}

.hero-card-inner {
  position: relative;
  z-index: 1;
}

.hero-avatar {
  width: 72px;
  height: 72px;
  border-radius: 26px;
  background: radial-gradient(
    circle at 30% 20%,
    rgba(148, 163, 184, 0.1),
    rgba(15, 23, 42, 0.96)
  );
  border: 1px solid rgba(148, 163, 184, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.1rem;
}

.hero-avatar span {
  background: linear-gradient(135deg, #38bdf8, #f97316);
  -webkit-background-clip: text;
  color: transparent;
}

.hero-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 14px;
  gap: 10px;
}

.hero-card-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.hero-card-name {
  font-weight: 600;
  font-size: 1rem;
}

.hero-card-role {
  font-size: 0.8rem;
  color: var(--text-soft);
}

.hero-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
  margin-bottom: 8px;
}

.tag {
  font-size: 0.72rem;
  padding: 4px 9px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.45);
  background: rgba(15, 23, 42, 0.95);
  color: var(--text-soft);
}

.tag-highlight {
  border-color: rgba(56, 189, 248, 0.7);
  background: rgba(8, 47, 73, 0.85);
  color: #e0f2fe;
}

.hero-card-footer {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 12px;
}

.mini-stat {
  padding: 8px 9px;
  border-radius: 0.9rem;
  border: 1px solid rgba(148, 163, 184, 0.4);
  background: rgba(15, 23, 42, 0.9);
  font-size: 0.72rem;
}

.mini-stat-label {
  color: var(--text-soft);
  margin-bottom: 3px;
  font-size: 0.68rem;
}

.mini-stat-value {
  font-weight: 600;
}

.hero-card-ribbon {
  position: absolute;
  top: 16px;
  right: -40px;
  padding: 5px 48px;
  transform: rotate(16deg);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  background: linear-gradient(135deg, #22c55e, #16a34a);
  color: white;
  box-shadow: 0 12px 30px rgba(22, 163, 74, 0.55);
}

/* Sections */

section {
  margin-bottom: 40px;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 16px;
}

.section-title {
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--text-soft);
}

.section-subtitle {
  font-size: 0.86rem;
  color: var(--text-soft);
}

.section-title span {
  color: var(--accent);
}

/* About */

.about-card {
  border-radius: var(--radius-xl);
  background: rgba(15, 23, 42, 0.95);
  border: 1px solid rgba(148, 163, 184, 0.4);
  padding: 18px 18px 16px;
  box-shadow: var(--shadow-soft);
  display: grid;
  grid-template-columns: minmax(0, 2.1fr) minmax(0, 1.3fr);
  gap: 20px;
  align-items: center;
}

.about-text-main {
  font-size: 0.94rem;
  color: var(--text-soft);
  line-height: 1.7;
}

.about-text-main strong {
  color: #e5e7eb;
  font-weight: 500;
}

.about-highlights {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  font-size: 0.78rem;
  margin-top: 14px;
}

.about-pill {
  padding: 7px 10px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.95);
  border: 1px dashed rgba(148, 163, 184, 0.6);
  text-align: center;
  color: var(--text-soft);
}

.about-side {
  border-radius: var(--radius-lg);
  border: 1px solid rgba(148, 163, 184, 0.45);
  padding: 12px 12px 10px;
  background: radial-gradient(
      circle at 0 0,
      rgba(56, 189, 248, 0.16),
      transparent 65%
    ),
    rgba(15, 23, 42, 0.98);
  font-size: 0.78rem;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.about-side-label {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.68rem;
  color: var(--text-soft);
}

.about-side-items {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.chip {
  padding: 4px 9px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.4);
  background: rgba(15, 23, 42, 0.9);
  color: var(--text-soft);
  font-size: 0.72rem;
}

.chip-accent {
  border-color: rgba(56, 189, 248, 0.75);
  background: rgba(8, 47, 73, 0.9);
  color: #e0f2fe;
}

/* Skills */

.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.skill-card {
  padding: 10px 10px 9px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(148, 163, 184, 0.45);
  background: rgba(15, 23, 42, 0.98);
  font-size: 0.78rem;
  display: flex;
  flex-direction: column;
  gap: 6px;
  box-shadow: 0 14px 28px rgba(15, 23, 42, 0.9);
}

.skill-card-title {
  font-size: 0.8rem;
  font-weight: 500;
}

.skill-card-title span {
  color: var(--accent);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}

.skill-tag {
  font-size: 0.72rem;
  padding: 3px 8px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.4);
  color: var(--text-soft);
  background: rgba(15, 23, 42, 0.95);
}

.skill-tag-strong {
  border-color: rgba(56, 189, 248, 0.85);
  color: #e0f2fe;
  background: rgba(8, 47, 73, 0.9);
}

/* Experience */

.timeline {
  border-radius: var(--radius-xl);
  border: 1px solid rgba(148, 163, 184, 0.45);
  padding: 14px 16px 12px;
  background: rgba(15, 23, 42, 0.96);
  box-shadow: var(--shadow-soft);
}

.timeline-item {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 2.4fr);
  gap: 16px;
}

.timeline-heading {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.timeline-role {
  font-size: 0.9rem;
  font-weight: 500;
}

.timeline-meta {
  font-size: 0.78rem;
  color: var(--text-soft);
}

.badge-outline {
  display: inline-flex;
  padding: 4px 10px;
  font-size: 0.72rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.5);
  color: var(--text-soft);
  margin-top: 5px;
}

.timeline-points {
  font-size: 0.8rem;
  color: var(--text-soft);
  padding-left: 16px;
  margin: 0;
}

.timeline-points li {
  margin-bottom: 4px;
}

/* Projects */

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.project-card {
  border-radius: var(--radius-lg);
  border: 1px solid rgba(148, 163, 184, 0.45);
  padding: 12px 12px 10px;
  background: rgba(15, 23, 42, 0.98);
  font-size: 0.8rem;
  box-shadow: 0 16px 32px rgba(15, 23, 42, 0.95);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.project-badge {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent);
}

.project-title {
  font-size: 0.86rem;
  font-weight: 500;
}

.project-desc {
  font-size: 0.78rem;
  color: var(--text-soft);
}

.project-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 2px;
}

.project-meta span {
  font-size: 0.72rem;
  padding: 3px 8px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.4);
  color: var(--text-soft);
  background: rgba(15, 23, 42, 0.96);
}

.project-footer {
  margin-top: 6px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  font-size: 0.78rem;
}

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

/* Contact / Footer */

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1.4fr);
  gap: 16px;
}

.contact-card {
  border-radius: var(--radius-xl);
  border: 1px solid rgba(148, 163, 184, 0.45);
  padding: 14px 14px 12px;
  background: rgba(15, 23, 42, 0.98);
  box-shadow: var(--shadow-soft);
  font-size: 0.8rem;
}

.contact-row {
  display: flex;
  flex-direction: column;
  gap: 5px;
  margin-bottom: 8px;
}

.label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--text-soft);
}

.value {
  font-size: 0.86rem;
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.social-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.5);
  background: rgba(15, 23, 42, 0.92);
  font-size: 0.8rem;
  color: var(--text-soft);
  cursor: pointer;
  transition: border-color 0.16s ease, color 0.16s ease,
    background 0.16s ease, transform 0.14s ease,
    box-shadow 0.16s ease;
}

.social-btn:hover {
  border-color: rgba(56, 189, 248, 0.8);
  color: var(--accent);
  background: rgba(15, 23, 42, 0.98);
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow);
}

form {
  display: grid;
  gap: 8px;
}

label span {
  display: block;
  font-size: 0.74rem;
  margin-bottom: 3px;
  color: var(--text-soft);
}

input,
textarea {
  width: 100%;
  font-family: inherit;
  font-size: 0.8rem;
  padding: 7px 9px;
  border-radius: 0.7rem;
  border: 1px solid rgba(148, 163, 184, 0.6);
  background: rgba(15, 23, 42, 0.96);
  color: var(--text);
  outline: none;
  resize: vertical;
  min-height: 32px;
}

input:focus,
textarea:focus {
  border-color: rgba(56, 189, 248, 0.9);
  box-shadow: var(--shadow-glow);
}

textarea {
  min-height: 80px;
}

.form-note {
  font-size: 0.7rem;
  color: var(--text-soft);
  margin-top: 4px;
}

footer {
  max-width: var(--max-width);
  margin: 16px auto 0;
  padding: 10px 18px 0;
  font-size: 0.72rem;
  color: var(--text-soft);
  border-top: 1px solid rgba(30, 64, 175, 0.4);
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding-top: 12px;
}

.footer-right {
  display: flex;
  gap: 10px;
}

/* Animations */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Copy email */
.copy-email {
  transition: color 0.2s ease, transform 0.2s ease;
}

.copy-email:hover {
  color: var(--accent);
  transform: translateX(2px);
}

/* Form messages */
.form-message {
  padding: 8px 12px;
  border-radius: 0.7rem;
  font-size: 0.78rem;
  margin-top: 8px;
  opacity: 1;
  transition: opacity 0.3s ease;
}

.form-message-success {
  background: rgba(34, 197, 94, 0.15);
  border: 1px solid rgba(34, 197, 94, 0.4);
  color: #86efac;
}

.form-message-error {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.4);
  color: #fca5a5;
}

/* Certifications */
.certifications-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.cert-card {
  border-radius: var(--radius-lg);
  border: 1px solid rgba(148, 163, 184, 0.45);
  padding: 16px 14px;
  background: rgba(15, 23, 42, 0.98);
  box-shadow: 0 16px 32px rgba(15, 23, 42, 0.95);
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.cert-card:hover {
  transform: translateY(-4px);
  border-color: rgba(56, 189, 248, 0.6);
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.98), var(--shadow-glow);
}

.cert-icon {
  font-size: 2.5rem;
  margin-bottom: 4px;
}

.cert-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
}

.cert-desc {
  font-size: 0.78rem;
  color: var(--text-soft);
  line-height: 1.5;
}

.cert-badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.7rem;
  background: rgba(56, 189, 248, 0.15);
  border: 1px solid rgba(56, 189, 248, 0.4);
  color: var(--accent);
  margin-top: 4px;
  width: fit-content;
}

/* Enhanced project cards */
.project-card {
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.project-card:hover {
  transform: translateY(-4px);
  border-color: rgba(56, 189, 248, 0.6);
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.98), var(--shadow-glow);
}

/* Enhanced skill cards */
.skill-card {
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.skill-card:hover {
  transform: translateY(-2px);
  border-color: rgba(56, 189, 248, 0.5);
  box-shadow: 0 18px 36px rgba(15, 23, 42, 0.95);
}

/* Loading animation for hero */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes gradient-shift {
  0%, 100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

.pill-dot {
  animation: pulse 2s ease-in-out infinite;
}

.hero-card-ribbon {
  animation: float 3s ease-in-out infinite;
}


/* Smooth transitions */
* {
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

/* Scroll to top button */
.scroll-top-btn {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, #0ea5e9, #6366f1);
  border: 1px solid rgba(56, 189, 248, 0.5);
  color: white;
  font-size: 1.2rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.2s ease;
  z-index: 100;
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.4);
}

.scroll-top-btn:hover {
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 12px 32px rgba(37, 99, 235, 0.6);
}

/* Responsive */

@media (max-width: 900px) {
  .hero {
    grid-template-columns: minmax(0, 1fr);
  }
  .hero-right {
    order: -1;
  }
  .hero-card {
    max-width: 420px;
  }

  .about-card {
    grid-template-columns: minmax(0, 1fr);
  }

  .skills-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .projects-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .certifications-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .contact-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .timeline-item {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 640px) {
  .page {
    padding-inline: 14px;
  }

  .nav-inner {
    padding-inline: 14px;
  }

  nav {
    display: none;
  }

  .mobile-nav-toggle {
    display: block;
  }

  .mobile-nav-menu.open {
    display: flex;
  }

  .hero {
    margin-top: 10px;
    margin-bottom: 28px;
  }

  .about-highlights {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .skills-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .projects-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .certifications-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  footer {
    flex-direction: column;
  }
}