/* ============================================================
   Ryan Ordonez - Portfolio Website Stylesheet
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  --bg-primary: #111111;
  --bg-secondary: #171717;
  --bg-card: #1c1c1c;
  --bg-card-hover: #222222;
  --accent: #e07b39;
  --accent-dim: rgba(224, 123, 57, 0.15);
  --text-primary: #ececec;
  --text-secondary: #a0a0a0;
  --text-muted: #5a5a5a;
  --border-color: #2a2a2a;
  --border-subtle: #232323;
  --success: #4ade80;
  --font-body: 'Inter', sans-serif;
  --font-code: 'JetBrains Mono', monospace;
  --sidebar-width: 200px;
  --max-width: 860px;
  --radius: 8px;
  --transition: 0.2s ease;
}

/* --- Light Theme --- */
[data-theme="light"] {
  --bg-primary: #f5f5f5;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #f0f0f0;
  --accent: #c96d2e;
  --accent-dim: rgba(201, 109, 46, 0.1);
  --text-primary: #1a1a1a;
  --text-secondary: #555555;
  --text-muted: #888888;
  --border-color: #e0e0e0;
  --border-subtle: #ebebeb;
  --success: #22c55e;
}

[data-theme="light"] ::selection {
  background: rgba(201, 109, 46, 0.2);
  color: var(--text-primary);
}

[data-theme="light"] ::-webkit-scrollbar-track { background: var(--bg-primary); }
[data-theme="light"] ::-webkit-scrollbar-thumb { background: #ccc; }
[data-theme="light"] ::-webkit-scrollbar-thumb:hover { background: #aaa; }
[data-theme="light"] * { scrollbar-color: #ccc var(--bg-primary); }

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}


::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: #2a2a2a; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #3a3a3a; }
* { scrollbar-width: thin; scrollbar-color: #2a2a2a var(--bg-primary); }

::selection { background: rgba(224, 123, 57, 0.25); color: var(--text-primary); }

h1 { font-size: 2.75rem; font-weight: 700; line-height: 1.1; letter-spacing: -0.03em; }
h2 { font-size: 1.75rem; font-weight: 600; line-height: 1.2; }
h3 { font-size: 1.1rem; font-weight: 600; line-height: 1.3; }
h4 { font-size: 0.875rem; font-weight: 600; color: var(--text-primary); }
p { font-size: 0.95rem; color: var(--text-secondary); line-height: 1.7; }
a { color: inherit; text-decoration: none; transition: color var(--transition); }
ul { list-style: none; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
  width: 100%;
}

.section {
  padding: 4.5rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.section-title {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

/* ============================================================
   SIDEBAR
   ============================================================ */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  z-index: 1000;
  overflow-y: auto;
}

/* Sidebar profile block */
.sidebar-profile {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1.75rem 1rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
  text-align: center;
}

.sidebar-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center top;
  border: 2px solid var(--border-color);
  margin-bottom: 0.75rem;
}

.sidebar-name {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 0.01em;
  margin-bottom: 0.6rem;
  line-height: 1.3;
}

.sidebar-socials {
  display: flex;
  gap: 0.4rem;
  justify-content: center;
}

.sidebar-socials a {
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 5px;
  color: var(--text-muted);
  border: 1px solid var(--border-color);
  transition: all var(--transition);
}

.sidebar-socials a svg { width: 12px; height: 12px; }
.sidebar-socials a:hover { color: var(--text-primary); border-color: #3a3a3a; background: rgba(255,255,255,0.05); }

.sidebar-nav {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1px;
  padding: 0.75rem 0.5rem;
}

.sidebar-link {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 0.65rem;
  border-radius: 6px;
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 500;
  transition: all var(--transition);
  letter-spacing: 0.01em;
}

.sidebar-link svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  stroke-width: 1.75;
}

.sidebar-link:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.04);
}

.sidebar-link.active {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.06);
}

.sidebar-link.active svg { color: var(--accent); }

/* ============================================================
   MOBILE NAV
   ============================================================ */
.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 52px;
  background: rgba(17, 17, 17, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.25rem;
}

.mobile-nav-logo {
  font-family: var(--font-code);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.mobile-nav-toggle {
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}

.mobile-nav-toggle span {
  display: block;
  width: 20px;
  height: 1.5px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: all var(--transition);
}

.mobile-nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.mobile-nav-toggle.active span:nth-child(2) { opacity: 0; }
.mobile-nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

.mobile-nav-menu {
  display: none;
  position: absolute;
  top: 52px;
  left: 0;
  right: 0;
  background: rgba(17, 17, 17, 0.98);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  flex-direction: column;
  padding: 0.75rem 1.25rem;
}

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

.mobile-nav-menu a {
  padding: 0.6rem 0;
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  border-bottom: 1px solid var(--border-subtle);
  transition: color var(--transition);
}

.mobile-nav-menu a:last-child { border-bottom: none; }
.mobile-nav-menu a:hover { color: var(--text-primary); }

/* ============================================================
   MAIN CONTENT
   ============================================================ */
.main-content {
  margin-left: var(--sidebar-width);
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
}

.hero-bg-img {
  display: block;
  width: 100%;
  height: auto;
  image-orientation: from-image;
  filter: brightness(0.5);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(0, 0, 0, 0.88) 0%,
    rgba(0, 0, 0, 0.3) 40%,
    rgba(0, 0, 0, 0.05) 100%
  );
}

.hero-bottom {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1;
  display: flex;
  align-items: flex-end;
  padding: 0 3rem 2.5rem;
  gap: 2rem;
}

.hero-text {
  flex-shrink: 0;
  max-width: 440px;
}

.hero-stats {
  margin-left: auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  flex-shrink: 0;
}

.hero-stat {
  background: rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-left: 2px solid var(--accent);
  backdrop-filter: blur(8px);
  border-radius: 6px;
  padding: 0.7rem 1rem;
  text-align: right;
  min-width: 170px;
}

.hero-stat-value {
  font-size: 1.3rem;
  font-weight: 700;
  color: #fff;
  line-height: 1.1;
}

.hero-stat-label {
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.55);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 0.15rem;
}

.hero-greeting {
  font-family: var(--font-code);
  font-size: 0.78rem;
  color: rgba(255,255,255,0.6);
  margin-bottom: 0.6rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-name {
  font-size: 3rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.5rem;
  letter-spacing: -0.03em;
  line-height: 1.05;
}

.hero-title {
  font-size: 0.9rem;
  font-weight: 400;
  color: rgba(255,255,255,0.65);
  margin-bottom: 2rem;
  line-height: 1.5;
}

.hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 1.1rem;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  font-family: var(--font-body);
}

.btn .icon { width: 14px; height: 14px; }

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

.btn-primary:hover {
  background: #c96d2e;
  color: #fff;
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

.btn-outline:hover {
  color: var(--text-primary);
  border-color: #3a3a3a;
  background: rgba(255, 255, 255, 0.04);
}

.btn-ghost {
  background: rgba(255,255,255,0.1);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.25);
  backdrop-filter: blur(4px);
}

.btn-ghost:hover {
  background: rgba(255,255,255,0.18);
  color: #fff;
}

/* ============================================================
   ABOUT
   ============================================================ */
.about-content {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: start;
}

.about-text p {
  margin-bottom: 1.25rem;
  font-size: 0.95rem;
}

.about-details {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.about-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-left: 2px solid var(--accent);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
}

.about-card h4 {
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.education-item { margin-bottom: 0.75rem; }
.education-item:last-child { margin-bottom: 0; }

.edu-degree {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary) !important;
}

.edu-school {
  font-size: 0.8rem;
  color: var(--text-muted) !important;
}

.background-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.bg-tag {
  display: inline-block;
  padding: 0.25rem 0.6rem;
  background: rgba(224, 123, 57, 0.07);
  border: 1px solid rgba(224, 123, 57, 0.2);
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
}

/* ============================================================
   PROJECTS
   ============================================================ */
.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  border-color: #333;
  background: var(--bg-card-hover);
}

.project-card.featured {
  border-left: 2px solid var(--accent);
}

.project-card-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.project-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.4rem;
}

.project-card-header h3 { margin-bottom: 0; }

.project-badge {
  font-size: 0.6rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.15rem 0.45rem;
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid rgba(224, 123, 57, 0.2);
  border-radius: 3px;
}

.project-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
  line-height: 1.65;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 1rem;
}

.project-tag {
  display: inline-block;
  padding: 0.18rem 0.5rem;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-muted);
  border: 1px solid var(--border-color);
  border-radius: 3px;
  font-size: 0.7rem;
  font-weight: 500;
  font-family: var(--font-code);
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 500;
  transition: all var(--transition);
  align-self: flex-start;
}

.project-link:hover { opacity: 0.8; gap: 0.45rem; }

/* ============================================================
   SKILLS
   ============================================================ */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 0.75rem;
}

.skill-category {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-top: 2px solid var(--accent);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
  transition: border-color var(--transition);
}

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

.skill-category h3 {
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 0.7rem;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.skill-tag {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  background: rgba(224, 123, 57, 0.07);
  color: var(--text-secondary);
  border: 1px solid rgba(224, 123, 57, 0.2);
  border-radius: 3px;
  font-size: 0.72rem;
  font-weight: 500;
  font-family: var(--font-code);
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact-content {
  max-width: 560px;
}

.contact-intro {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 1.75rem;
}

.contact-cards {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 0.875rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: all var(--transition);
  text-decoration: none;
}

.contact-card:hover {
  border-color: #333;
  background: var(--bg-card-hover);
}

.contact-card-icon {
  color: var(--accent);
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-dim);
  border-radius: 6px;
  flex-shrink: 0;
}

.contact-card-icon svg { width: 16px; height: 16px; }

.contact-card h4 {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.1rem;
}

.contact-card p {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  padding: 1.75rem 0;
  text-align: center;
}

.footer p {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ============================================================
   THEME TOGGLE
   ============================================================ */
.theme-toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.65rem;
  margin: 0.25rem 0.5rem;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background: transparent;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 500;
  font-family: var(--font-body);
  transition: all var(--transition);
}

.theme-toggle:hover {
  color: var(--text-primary);
  border-color: #3a3a3a;
  background: rgba(255, 255, 255, 0.04);
}

[data-theme="light"] .theme-toggle:hover {
  border-color: #ccc;
  background: rgba(0, 0, 0, 0.04);
}

.theme-toggle svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

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

[data-theme="light"] .theme-toggle .theme-icon-moon {
  display: block;
}

.mobile-theme-toggle {
  background: none;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-muted);
  transition: all var(--transition);
  margin-right: 0.5rem;
}

.mobile-theme-toggle:hover {
  color: var(--text-primary);
  border-color: #3a3a3a;
}

.mobile-theme-toggle svg { width: 14px; height: 14px; }

.mobile-theme-toggle .theme-icon-moon,
[data-theme="light"] .mobile-theme-toggle .theme-icon-sun {
  display: none;
}

[data-theme="light"] .mobile-theme-toggle .theme-icon-moon {
  display: block;
}

/* Light theme overrides for mobile nav */
[data-theme="light"] .mobile-nav {
  background: rgba(255, 255, 255, 0.96);
}

[data-theme="light"] .mobile-nav-menu {
  background: rgba(255, 255, 255, 0.98);
}

[data-theme="light"] .mobile-nav-toggle span {
  background: var(--text-secondary);
}

/* ============================================================
   ANIMATIONS
   ============================================================ */

/* Page load entrance */
@keyframes pageEnter {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInScale {
  from {
    opacity: 0;
    transform: scale(0.96);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Main content page entrance animation */
.main-content {
  animation: pageEnter 0.5s ease-out both;
}

/* Scroll-triggered fade-in (existing, enhanced) */
.fade-in {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.45s ease, transform 0.45s ease;
}

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

/* Slide-in from left variant */
.slide-in-left {
  opacity: 0;
  transform: translateX(-20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.slide-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

/* Scale-in variant */
.scale-in {
  opacity: 0;
  transform: scale(0.96);
  transition: opacity 0.45s ease, transform 0.45s ease;
}

.scale-in.visible {
  opacity: 1;
  transform: scale(1);
}

/* Staggered card entrance animations */
.stagger-in > * {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.stagger-in.visible > *:nth-child(1) { transition-delay: 0s; }
.stagger-in.visible > *:nth-child(2) { transition-delay: 0.06s; }
.stagger-in.visible > *:nth-child(3) { transition-delay: 0.12s; }
.stagger-in.visible > *:nth-child(4) { transition-delay: 0.18s; }
.stagger-in.visible > *:nth-child(5) { transition-delay: 0.24s; }
.stagger-in.visible > *:nth-child(6) { transition-delay: 0.30s; }
.stagger-in.visible > *:nth-child(7) { transition-delay: 0.36s; }
.stagger-in.visible > *:nth-child(8) { transition-delay: 0.42s; }
.stagger-in.visible > *:nth-child(9) { transition-delay: 0.48s; }
.stagger-in.visible > *:nth-child(10) { transition-delay: 0.54s; }

.stagger-in.visible > * {
  opacity: 1;
  transform: translateY(0);
}

/* Blog card hover lift animation */
.blog-card {
  transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.blog-card:hover {
  transform: translateY(-3px);
}

/* Project card hover lift */
.project-card {
  transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.project-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

/* Skill category hover animation */
.skill-category {
  transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.skill-category:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
}

/* Section header entrance */
.section-title {
  transition: opacity 0.5s ease, transform 0.5s ease;
}

/* Smooth link underline animation */
.blog-card-read {
  position: relative;
  display: inline-block;
}

.blog-card-read::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width 0.3s ease;
}

.blog-card:hover .blog-card-read::after {
  width: 100%;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
  .main-content { animation: none; }
  .fade-in,
  .slide-in-left,
  .scale-in { transition: none; opacity: 1; transform: none; }
  .stagger-in > * { transition: none; opacity: 1; transform: none; }
  .blog-card,
  .project-card,
  .skill-category { transition: background var(--transition), border-color var(--transition); }
  .blog-card:hover,
  .project-card:hover,
  .skill-category:hover { transform: none; box-shadow: none; }
}

/* ============================================================
   SCROLL TO TOP
   ============================================================ */
.scroll-to-top {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 36px;
  height: 36px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s ease;
  z-index: 999;
}

.scroll-to-top.visible { opacity: 1; visibility: visible; }
.scroll-to-top:hover { color: var(--text-primary); border-color: #333; }
.scroll-to-top svg { width: 15px; height: 15px; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  :root { --sidebar-width: 180px; }
  .hero-name { font-size: 2.25rem; }
  .about-content { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .sidebar { display: none; }
  .mobile-nav { display: flex; }
  .main-content { margin-left: 0; padding-top: 52px; }
  .hero-bottom { flex-direction: column; padding: 0 1.25rem 1.5rem; gap: 1rem; }
  .hero-stats { display: none; }
  .hero-name { font-size: 2rem; }
  .hero-title { font-size: 0.85rem; }
  .section { padding: 3rem 0; }
  .container { padding: 0 1.25rem; }
  .about-content { grid-template-columns: 1fr; gap: 2rem; }
  .skills-grid { grid-template-columns: 1fr 1fr; }
  .hero-links { flex-direction: column; }
  .hero-links .btn { width: 100%; justify-content: center; }
}

@media (max-width: 480px) {
  .hero-name { font-size: 1.75rem; }
  .section-title { font-size: 0.65rem; }
  .skills-grid { grid-template-columns: 1fr; }
}