/* ==========================================================================
   Mohamed Breek — Modern Developer Portfolio Styles
   Clean, minimalist, high-craft engineering portfolio with Dark & Light theme
   ========================================================================== */

:root {
  /* Default Dark Theme Variables */
  --bg-main: #0a0e17;
  --bg-card: #121826;
  --bg-card-hover: #172033;
  --bg-alt: #0d131f;
  --border-subtle: rgba(255, 255, 255, 0.07);
  --border-card: rgba(255, 255, 255, 0.09);
  --border-hover: rgba(59, 130, 246, 0.35);

  --text-main: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --accent-blue: #3b82f6;
  --accent-blue-hover: #2563eb;
  --accent-cyan: #06b6d4;
  --accent-emerald: #10b981;

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

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --nav-bg: rgba(10, 14, 23, 0.85);
  --tag-bg: rgba(59, 130, 246, 0.08);
  --tag-border: rgba(59, 130, 246, 0.2);
  --tag-color: #93c5fd;

  --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.35);
  --transition: all 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Light Theme Variables */
[data-theme="light"] {
  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-hover: #f1f5f9;
  --bg-alt: #f1f5f9;
  --border-subtle: rgba(0, 0, 0, 0.07);
  --border-card: rgba(0, 0, 0, 0.08);
  --border-hover: rgba(37, 99, 235, 0.45);

  --text-main: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;

  --accent-blue: #2563eb;
  --accent-blue-hover: #1d4ed8;
  --accent-cyan: #0891b2;
  --accent-emerald: #059669;

  --nav-bg: rgba(248, 250, 252, 0.88);
  --tag-bg: rgba(37, 99, 235, 0.08);
  --tag-border: rgba(37, 99, 235, 0.2);
  --tag-color: #1d4ed8;

  --shadow-card: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.03);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  background-color: var(--bg-main);
  color: var(--text-main);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color 0.25s ease, color 0.25s ease;
}

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.65;
  overflow-x: hidden;
  transition: background-color 0.25s ease, color 0.25s ease;
}

/* Utilities */
.max-w {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ==========================================================================
   Navigation
   ========================================================================== */
.navbar-wrapper {
  position: sticky;
  top: 0;
  z-index: 50;
  width: 100%;
  background: var(--nav-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-subtle);
  transition: background-color 0.25s ease, border-color 0.25s ease;
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand-logo {
  text-decoration: none;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  color: var(--text-main);
  display: inline-flex;
  align-items: center;
}

.logo-dot {
  color: var(--accent-blue);
  font-weight: 900;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
  transition: var(--transition);
}

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

.contact-pill {
  padding: 0.45rem 1.05rem;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.25);
  border-radius: var(--radius-full);
  color: var(--accent-blue) !important;
  font-weight: 600;
}

.contact-pill:hover {
  background: var(--accent-blue);
  color: #ffffff !important;
  border-color: var(--accent-blue);
}

/* Theme Toggle Button */
.theme-toggle-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  color: var(--text-main);
  border-radius: var(--radius-sm);
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.95rem;
}

.theme-toggle-btn:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
  transform: translateY(-1px);
}

/* Icon visibility based on theme */
[data-theme="dark"] .theme-icon-sun {
  display: inline-block;
  color: #fbbf24;
}
[data-theme="dark"] .theme-icon-moon {
  display: none;
}

[data-theme="light"] .theme-icon-sun {
  display: none;
}
[data-theme="light"] .theme-icon-moon {
  display: inline-block;
  color: #3b82f6;
}

.mobile-toggle {
  display: none;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  color: var(--text-main);
  font-size: 1.15rem;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

/* Mobile Drawer */
.mobile-drawer {
  position: fixed;
  top: 0;
  right: -100%;
  width: 280px;
  height: 100vh;
  background: var(--bg-card);
  border-left: 1px solid var(--border-card);
  padding: 1.5rem;
  z-index: 100;
  transition: right 0.3s ease;
  display: flex;
  flex-direction: column;
}

.mobile-drawer.open {
  right: 0;
}

.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-subtle);
}

.close-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.75rem;
  cursor: pointer;
}

.drawer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.drawer-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 500;
}

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

.drawer-cta {
  color: var(--accent-blue);
  font-weight: 600;
}

.drawer-footer {
  margin-top: auto;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-subtle);
}

.drawer-theme-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 0.75rem;
  border-radius: var(--radius-md);
  background: var(--bg-alt);
  border: 1px solid var(--border-card);
  color: var(--text-main);
  font-weight: 600;
  font-size: 0.88rem;
  cursor: pointer;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  padding: 5rem 0 4rem;
  border-bottom: 1px solid var(--border-subtle);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 3.5rem;
  align-items: center;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.35rem 0.85rem;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 600;
  color: #10b981;
  margin-bottom: 1.5rem;
}

[data-theme="light"] .status-badge {
  background: rgba(16, 185, 129, 0.12);
  color: #047857;
  border-color: rgba(16, 185, 129, 0.35);
}

.status-dot {
  width: 7px;
  height: 7px;
  background-color: var(--accent-emerald);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent-emerald);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.15); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.hero-title {
  font-size: 2.75rem;
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.03em;
  color: var(--text-main);
  margin-bottom: 1.25rem;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 2rem;
  max-width: 620px;
}

.hero-subtitle strong {
  color: var(--text-main);
  font-weight: 600;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.35rem;
  font-size: 0.88rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary {
  background-color: var(--accent-blue);
  color: #ffffff;
  border: 1px solid var(--accent-blue);
}

.btn-primary:hover {
  background-color: var(--accent-blue-hover);
  border-color: var(--accent-blue-hover);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: var(--bg-card);
  color: var(--text-main);
  border: 1px solid var(--border-card);
}

.btn-secondary:hover {
  background-color: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-1px);
}

.social-quick-links {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-left: 0.5rem;
}

.social-icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition);
}

.social-icon-btn:hover {
  color: var(--text-main);
  border-color: var(--accent-blue);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

/* Avatar Card */
.hero-avatar-wrapper {
  display: flex;
  justify-content: center;
}

.avatar-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 1rem;
  text-align: center;
  width: 100%;
  max-width: 260px;
  box-shadow: var(--shadow-card);
}

.avatar-img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  object-position: center 20%;
  border-radius: var(--radius-md);
  margin-bottom: 0.85rem;
  border: 1px solid var(--border-subtle);
}

.avatar-name {
  display: block;
  font-weight: 700;
  font-size: 0.98rem;
  color: var(--text-main);
}

.avatar-role {
  display: block;
  font-size: 0.8rem;
  color: var(--accent-blue);
  font-weight: 600;
}

/* ==========================================================================
   Section Components
   ========================================================================== */
.section {
  padding: 5rem 0;
}

.section-alt {
  background-color: var(--bg-alt);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.section-header {
  margin-bottom: 3rem;
}

.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-blue);
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: 1.85rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  color: var(--text-main);
}

.section-subtext {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-top: 0.5rem;
  max-width: 600px;
}

/* ==========================================================================
   About Section
   ========================================================================== */
.about-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 2.5rem;
}

.about-card-main {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  box-shadow: var(--shadow-card);
}

.about-card-main p {
  color: var(--text-secondary);
  font-size: 0.98rem;
  line-height: 1.75;
}

.about-card-main p strong {
  color: var(--text-main);
}

.about-highlights {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.highlight-item {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 1.4rem;
  display: flex;
  gap: 1.15rem;
  align-items: flex-start;
  transition: var(--transition);
  box-shadow: var(--shadow-card);
}

.highlight-item:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
}

.highlight-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: rgba(59, 130, 246, 0.1);
  color: var(--accent-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.highlight-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.25rem;
}

.highlight-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ==========================================================================
   Timeline / Experience Section
   ========================================================================== */
.timeline {
  display: flex;
  flex-direction: column;
  position: relative;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 15px;
  bottom: 15px;
  left: 7px;
  width: 2px;
  background: var(--border-card);
}

.timeline-item {
  position: relative;
  margin-bottom: 2.25rem;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: -2rem;
  top: 1.25rem;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--bg-main);
  border: 3px solid var(--accent-blue);
  transform: translateX(-1px);
}

.timeline-content {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 1.75rem 2rem;
  transition: var(--transition);
  box-shadow: var(--shadow-card);
}

.timeline-content:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.85rem;
}

.timeline-role {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-main);
}

.timeline-org {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent-blue);
  margin-left: 0.35rem;
}

.timeline-period {
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  background: var(--border-subtle);
  padding: 0.2rem 0.65rem;
  border-radius: var(--radius-full);
}

.timeline-body {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.6;
  margin-bottom: 1rem;
}

.timeline-bullets {
  list-style-type: none;
  padding: 0;
  margin-bottom: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.timeline-bullets li {
  position: relative;
  padding-left: 1.25rem;
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.55;
}

.timeline-bullets li::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: var(--accent-blue);
  font-size: 0.9rem;
}

.timeline-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  font-size: 0.74rem;
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--tag-color);
  background: var(--tag-bg);
  border: 1px solid var(--tag-border);
  padding: 0.2rem 0.65rem;
  border-radius: var(--radius-full);
}

/* ==========================================================================
   Projects Section
   ========================================================================== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.75rem;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.project-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-3px);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.12);
}

.featured-card {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, rgba(23, 32, 51, 0.95), rgba(15, 23, 42, 0.85));
  border-color: rgba(59, 130, 246, 0.25);
}

[data-theme="light"] .featured-card {
  background: linear-gradient(135deg, #ffffff, #eff6ff);
  border-color: rgba(37, 99, 235, 0.25);
}

.project-badge-ribbon {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #0284c7;
  background: rgba(14, 165, 233, 0.12);
  border: 1px solid rgba(14, 165, 233, 0.3);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  margin-bottom: 1rem;
}

.project-meta {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 0.65rem;
}

.project-year {
  font-size: 0.76rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.project-cat {
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--accent-blue);
}

.project-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.015em;
  margin-bottom: 0.75rem;
  line-height: 1.35;
}

.project-description {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 1.35rem;
}

.project-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.project-stack span {
  font-size: 0.72rem;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  background: var(--border-subtle);
  border: 1px solid var(--border-subtle);
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
}

.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.link-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.5rem 1rem;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-decoration: none;
  background: var(--bg-main);
  border: 1px solid var(--border-card);
  color: var(--text-main);
  transition: var(--transition);
}

.link-btn:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
  transform: translateY(-1px);
}

.link-btn.primary {
  background: var(--accent-blue);
  border-color: var(--accent-blue);
  color: #ffffff;
}

.link-btn.primary:hover {
  background: var(--accent-blue-hover);
  border-color: var(--accent-blue-hover);
  color: #ffffff;
}

/* ==========================================================================
   Skills Section
   ========================================================================== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.75rem;
}

.skill-category {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: var(--transition);
  box-shadow: var(--shadow-card);
}

.skill-category:hover {
  border-color: var(--border-hover);
}

.skill-cat-title {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 1.15rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.skill-cat-title i {
  color: var(--accent-blue);
}

.skill-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.skill-pill {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-main);
  background: var(--border-subtle);
  border: 1px solid var(--border-card);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.skill-pill:hover {
  background: rgba(59, 130, 246, 0.1);
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

/* ==========================================================================
   Certifications Section
   ========================================================================== */
.certs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.cert-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  box-shadow: var(--shadow-card);
}

.cert-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.cert-badge {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(59, 130, 246, 0.1);
  color: var(--accent-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-bottom: 1.25rem;
}

.cert-issuer {
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent-blue);
  display: block;
  margin-bottom: 0.35rem;
}

.cert-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.35;
  margin-bottom: 0.65rem;
}

.cert-desc {
  font-size: 0.84rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.cert-status {
  font-size: 0.76rem;
  font-family: var(--font-mono);
  color: #10b981;
  display: block;
}

.cert-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--accent-blue);
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 600;
  transition: var(--transition);
}

.cert-link:hover {
  color: var(--accent-blue-hover);
  text-decoration: underline;
}

/* ==========================================================================
   Contact Section
   ========================================================================== */
.contact-cards-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  max-width: 820px;
  margin: 0 auto;
}

.contact-card {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.75rem;
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
  box-shadow: var(--shadow-card);
}

.contact-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.contact-icon {
  width: 46px;
  height: 46px;
  border-radius: var(--radius-md);
  background: rgba(59, 130, 246, 0.1);
  color: var(--accent-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.contact-info {
  flex-grow: 1;
}

.contact-label {
  display: block;
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.contact-value {
  display: block;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
}

.contact-arrow {
  color: var(--text-muted);
  font-size: 0.85rem;
  transition: var(--transition);
}

.contact-card:hover .contact-arrow {
  color: var(--accent-blue);
  transform: translateX(4px);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  padding: 3.5rem 0 2.5rem;
  background: var(--bg-main);
  border-top: 1px solid var(--border-subtle);
  transition: background-color 0.25s ease, border-color 0.25s ease;
}

.footer-content {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.footer-left .logo-name {
  font-size: 1.2rem;
  font-weight: 800;
}

.footer-tagline {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.85rem;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--text-main);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.back-to-top {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 600;
}

.back-to-top:hover {
  color: var(--accent-blue);
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: left;
    gap: 2.5rem;
  }

  .hero-avatar-wrapper {
    justify-content: flex-start;
  }

  .avatar-card {
    max-width: 220px;
  }

  .about-grid {
    grid-template-columns: 1fr;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .certs-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .mobile-toggle {
    display: block;
  }

  .hero-title {
    font-size: 2.15rem;
  }

  .skills-grid {
    grid-template-columns: 1fr;
  }

  .contact-cards-grid {
    grid-template-columns: 1fr;
  }

  .timeline {
    padding-left: 1.5rem;
  }

  .timeline-dot {
    left: -1.5rem;
  }

  .timeline-content {
    padding: 1.25rem 1.4rem;
  }
}