/* ===============================================
   MUHAMMAD ASIF IQBAL - PORTFOLIO SITE
   Consolidated CSS File - All Styles in One
   =============================================== */

:root {
  /* Layout */
  --sidebar-expanded: 255px;
  --sidebar-collapsed: 80px;
  --container-max: 1400px;
  --header-height: 72px;
  
  /* Brand Colors */
  --brand-primary: #2563eb;
  --brand-secondary: #1B46BB;
  --brand-accent: #3b82f6;
  --brand-dark: #062068;
  --brand-light: #dbeafe;
  
  /* Status Colors */
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --info: #06b6d4;
  --stars: #ffbf1c;
  
  /* Text Colors */
  --text-primary: #1f2937;
  --text-secondary: #61656e;
  --text-muted: #8a909b;
  --text-light: #f8fafc;
  
  /* Background Colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  --bg-dark: #0f172a;
  --sidebar-bg: #08183b;
  --card-bg: rgba(255, 255, 255, 0.3);
  
  /* Border Colors */
  --border-light: #e2e8f0;
  --border-dark: #1B46BB;
  
  /* Gradients */
  --gradient-1: linear-gradient(92deg, #1B46BB, #7c3aed);
  --gradient-2: linear-gradient(30deg, #1B46BB, #10b981, #1ca9c2);
  --gradient-3: linear-gradient(112deg, #1B46BB, #7c3aed, #36cde7);
  --gradient-4: linear-gradient(112deg, #f59e0b, #10b981, #1B46BB);
  --gradient-5: linear-gradient(112deg, #092983, #4fd9f1, #058057);
  
  /* Glass Morphism */
  --glass-bg: rgba(255, 255, 255, 0.15);
  --glass-border: rgba(255, 255, 255, 0.25);
  --glass-blur: blur(20px);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  
  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 25px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 40px -10px rgba(0, 0, 0, 0.15);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  
  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-2xl: 24px;
  --radius-full: 9999px;
  
  /* Typography */
  --font-heading: 'Poppins', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-body: 'Poppins', 'Inter', system-ui, -apple-system, sans-serif;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-md: 1rem;
  --text-base: 1.1rem;
  --text-lg: 1.2rem;
  --text-xl: 1.3rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  
  /* Transitions */
  --transition: 300ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-fast: 200ms ease;
}

/* ===== DARK MODE ===== */
@media (prefers-color-scheme: dark) {
  :root {
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --glass-bg: rgba(30, 41, 59, 0.8);
    --glass-border: rgba(255, 255, 255, 0.1);
    --border-light: rgba(255, 255, 255, 0.1);
  }
  
  body {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);}
  
  .background-shapes {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);}
}

/* ===== BASE RESET & GLOBAL STYLES ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 13px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.4;
}

body {
  font-family: var(--font-body);
  line-height: 1.5;
  color: var(--text-primary);
  background: linear-gradient(135deg, #f0f4f8 0%, #e6ecf2 100%);
  min-height: 100vh;
  padding: 1.2rem;
  overflow-x: hidden;
  font-weight: 400;
}

/* ===== ACCESSIBILITY ===== */
.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--brand-primary);
  color: white;
  padding: 12px 20px;
  z-index: 10000;
  text-decoration: none;
  border-radius: var(--radius-md);
  font-weight: 600;
  transition: top 0.3s ease;
  border: 2px solid transparent;
}

.skip-link:focus {
  top: 20px;
  left: 20px;
  border-color: white;
  outline: none;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ===== BACKGROUND EFFECTS ===== */
.background-shapes {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  overflow: hidden;
  background: linear-gradient(135deg, #eef2f6 0%, #e8edf3 100%);
  backdrop-filter: blur(20px);
}

.shape {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.3;
  animation: float 20s ease-in-out infinite;
}

.shape-1 {
  background: linear-gradient(135deg, #3f7cff 0%, #be7cff 100%);
  width: 300px;
  height: 300px;
  top: 10%;
  left: 30%;
  opacity: 0.3;
  animation-delay: 0s;
}

.shape-2 {
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  width: 350px;
  height: 350px;
  top: 60%;
  right: 20%;
  animation-delay: 5s;
}

.shape-3 {
  background: linear-gradient(135deg, #4facfe 0%, #d3fdff 100%);
  width: 280px;
  height: 280px;
  bottom: 10%;
  left: 10%;
  animation-delay: 10s;
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg) scale(1); }
  33% { transform: translateY(-30px) rotate(3deg) scale(1.05); }
  66% { transform: translateY(20px) rotate(-2deg) scale(0.95); }
}

/* ===== MOBILE HEADER ===== */
.mobile-header {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border);
  z-index: 9900;
  padding: 0 1.5rem;
  align-items: center;
  justify-content: space-between;
}

.mobile-title {
  flex: 1;
  text-align: center;
}

.mobile-header h1 {
  font-size: 1.5rem;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--brand-dark);
  margin: 0;
}

.mobile-tagline {
  font-size: 1rem;
  color: var(--text-secondary);
  margin: 0;
  font-weight: 400;
}

/* ===== HAMBURGER MENU ===== */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 21px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  position: relative;
  z-index: 10000;
}

.hamburger span {
  display: block;
  height: 3px;
  width: 100%;
  background-color: var(--brand-dark);
  border-radius: 3px;
  transition: var(--transition);
  transform-origin: center;
}

.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(6px, 6px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(6px, -6px); }

/* ===== MAIN LAYOUT CONTAINER ===== */
.container {
  display: grid;
  grid-template-columns: var(--sidebar-expanded) 1fr;
  gap: 1.5rem;
  max-width: var(--container-max);
  margin: 0 auto;
  min-height: calc(100vh - 2rem);
  transition: grid-template-columns 0.3s var(--transition);
}

.container.collapsed {
  grid-template-columns: var(--sidebar-collapsed) 1fr;
}

/* ===== MAIN CONTENT AREA ===== */
.main-content {
  flex-grow: 1;
  padding: 0;
  margin: 0;
  width: 100%;
  transition: all 0.3s var(--transition);
  min-height: 100vh;
  padding-bottom: 3rem;
}

/* ===== SIDEBAR STYLES ===== */
.sidebar {
  position: sticky;
  top: 1rem;
  width: var(--sidebar-expanded);
  height: calc(100vh - 2rem);
  min-height: calc(100vh - 2rem);
  max-height: calc(100vh - 2rem);
  padding: 1.9rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  background: var(--sidebar-bg);
  color: white;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  overflow-x: hidden;
  overflow-y: auto;
  z-index: 100;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Sidebar Header */
.sidebar-header {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 0;
}

.sidebar-toggler {
  background: transparent;
  border: none;
  color: var(--brand-light);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  margin-top: -1rem;
  border-radius: var(--radius-full);
  transition: all 0.3s ease;
}

.sidebar-toggler i {
  font-size: 1.5rem;
  transition: transform 0.3s ease;
}

.sidebar-toggler:hover {
  transform: translateX(-5px);
}

/* Sidebar Avatar & Info */
.avatar {
  width: 90px;
  height: 92px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid rgba(255, 255, 255, 0.2);
  margin: -1rem auto;
  display: block;
  transition: all 0.3s ease;
}

.name {
  text-align: center;
  font-size: 1.2rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.7px;
  color: white;
  margin-top: 1rem;
  transition: all 0.3s ease;
}

.tagline {
  text-align: center;
  font-size: 0.72rem;
  letter-spacing: 0.4px;
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.5;
  margin-bottom: 0.5rem;
  transition: all 0.3s ease;
}

/* Sidebar Divider */
.sidebar .divider {
  height: 2px;
  width: 92%;
  background: var(--gradient-4);
  margin: 0.5rem auto;
  border-radius: 1px;
  opacity: 0.5;
}

/* Sidebar Navigation */
.nav-menu {
  list-style: none;
  margin: 0;
  padding: 0 1rem;
  flex-grow: 1;
}

.nav-link {
  display: flex;
  align-items: center;
  padding: 0.5rem 1rem;
  margin: 0.4rem 0;
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  border-radius: var(--radius-full);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid transparent;
  position: relative;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.01);
  border-color: rgba(255, 255, 255, 0.1);
}

.nav-link::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.6s ease;
}

.nav-link:hover::before {left: 100%;}

.nav-link:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateX(8px);
  color: white;
}

.nav-link.active {
  background: rgba(255, 255, 255, 0.95);
  color: var(--brand-dark);
  font-weight: 600;
  border-color: transparent;
  box-shadow: var(--shadow-md);
}

.nav-link.active i {
  color: var(--brand-dark);
}

.nav-link i {
  width: 24px;
  margin-right: 1rem;
  font-size: 1.25rem;
  color: var(--brand-light);
  transition: all 0.3s ease;
}

.nav-text {
  transition: all 0.3s ease;
  font-weight: 500;
}

.contact-info {
  color: rgba(255, 255, 255, 0.8);
  padding: 0.3rem 0 0 0;
  font-size: 0.9rem;
  transition: all 0.3s ease;
}

.contact-item {
  display: flex;
  align-items: center;
  margin-bottom: 0.6rem;
  color: rgba(255, 255, 255, 0.8);
  transition: all 0.3s ease;
}

.contact-item:hover {
  color: white;
  transform: translateX(5px);
}

.contact-item a {
  text-decoration: none;
  color: inherit;
  display: flex;
  align-items: center;
  gap: 1rem;
  width: 100%;
}

.contact-icon {
  width: 40px;
  text-align: center;
  flex-shrink: 0;
  font-size: 1rem;
  color: var(--brand-light);
}

.contact-text {
  transition: all 0.3s ease;
  flex-grow: 1;
}

.footer {
  text-align: center;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.72rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  transition: all 0.3s ease;
}

/* Collapsed Sidebar */
.sidebar.collapsed {
  width: var(--sidebar-collapsed);
  padding: 1.5rem 0.5rem;
  gap: 1rem;
  align-items: center;
  overflow-x: hidden;
}

.sidebar.collapsed .sidebar-header {
  justify-content: center;
  margin-bottom: 0.5rem;
}

.sidebar.collapsed .sidebar-toggler {
  transform: rotate(180deg);
}

.sidebar.collapsed .sidebar-toggler:hover {
  margin-left: 1rem;
}

.sidebar.collapsed .avatar {
  width: 60px;
  height: 63px;
  margin-top: 0.5rem;
}

.sidebar.collapsed .name {
  font-size: 0.75rem;
  font-weight: 500;
  margin: 0.5rem 0;
  white-space: wrap;
  overflow: hidden;
  text-align: center;
}

.sidebar.collapsed .tagline,
.sidebar.collapsed .nav-text,
.sidebar.collapsed .contact-text,
.sidebar.collapsed .contact-info, 
.sidebar.collapsed .contact-item,
.sidebar.collapsed .contact-icon,
.sidebar.collapsed .footer span {
  display: none;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}

.sidebar.collapsed .nav-link {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  margin: 0.5rem auto;
  width: 40px;
  height: 40px; 
  padding: 0;
  border-radius: 50%;
  border: none;
  transition: all 0.3s ease;
}

.sidebar.collapsed .nav-link i {
  margin: 0; 
  font-size: 1.25rem; 
  transition: all 0.3s ease;
}

.sidebar.collapsed .nav-link:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: scale(1.1);
}

.sidebar.collapsed .footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0.5rem 0 0 0;
  font-size: 0.8rem;
  border: none;
}

/* ===== TOOLTIP STYLES ===== */
.sidebar-tooltip {
  position: absolute;
  background: var(--sidebar-bg);
  color: white;
  padding: 0.8rem 1.1rem;
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  font-weight: 500;
  z-index: 10000;
  pointer-events: none;
  opacity: 0;
  transform: translateX(20px);
  transition: opacity 0.2s ease, transform 0.2s ease;
  white-space: nowrap;
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(10px);
}

.sidebar-tooltip.show {
  opacity: 1;
  transform: translateX(0);
}

.sidebar-tooltip::before {
  content: '';
  position: absolute;
  top: 50%;
  right: 100%;
  transform: translateY(-50%);
  border-width: 6px 6px 6px 0; 
  border-style: solid;
  border-color: transparent var(--brand-light) transparent transparent;
}

/* ===== MOBILE MENU OVERLAY ===== */
.mobile-menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(8, 24, 59, 0.8);
  backdrop-filter: blur(10px);
  z-index: 9999;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0s 0.3s;
}

.mobile-menu-overlay.active {
  opacity: 1;
  visibility: visible;
  transition: opacity 0.3s ease;
}

.mobile-menu-container {
  position: fixed;
  top: 0;
  left: 0;
  width: min(85%, 320px);
  height: 100%;
  background-color: var(--sidebar-bg);
  padding: 2rem;
  border-radius: 0 var(--radius-2xl) var(--radius-2xl) 0;
  box-shadow: var(--shadow-xl);
  transform: translateX(-100%);
  transition: transform 0.3s ease;
  overflow-y: auto;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  z-index: 10000;
}

.mobile-menu-overlay.active .mobile-menu-container {
  transform: translateX(0);
}

.mobile-menu-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background: transparent;
  border: none;
  color: white;
  font-size: 1.5rem;
  cursor: pointer;
  z-index: 10001;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  transition: background-color 0.3s ease;
}

.mobile-menu-close:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

/* ===== HERO SECTION ===== */
.hero {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-2xl);
  box-shadow: var(--glass-shadow);
  padding: 2.5rem;
  margin-top: 0.4rem;
  animation: fadeIn 0.6s ease-out;
}

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

.hero-card {padding: 1.2rem;}

.hero-card h1 {
  font-size: 2.1rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--brand-dark) 0%, var(--brand-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero .name {
  color: var(--brand-secondary);
  font-size: 2.5rem;
  display: inline-block;
  font-weight: 800;
}

.hero-subtitle {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  opacity: 0.95;
}

.hero .divider {
  height: 4px;
  background: var(--gradient-4);
  border-radius: var(--radius-full);
  margin: 1.5rem 0 2rem 0;
  width: 100px;
}

.hero p {
  font-size: 1.2rem;
  font-family: var(--font-body);
  line-height: 1.6;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.hero ul,
.content-card ul {
  list-style: none;
  padding-left: 0;
  margin: 1.0rem 0;
}

.hero li,
.content-card li {
  position: relative;
  padding-left: 2.5rem;
  margin-bottom: 0.75rem;
  line-height: 1.6;
  color: var(--text-primary);
  font-size: 1.1rem;
}

.hero li::before,
.content-card li::before {
  content: "→";
  position: absolute;
  left: 1rem;
  color: var(--brand-primary);
  font-weight: 900;
  font-size: 1.1rem;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  padding: 0.9rem 1.9rem;
  border-radius: var(--radius-full);
  text-decoration: none;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.1rem;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  text-transform: none;
  letter-spacing: 0.2px;
  border: 2px solid transparent;
  min-height: 48px;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left 0.6s ease;
}

.btn:hover::before {left: 100%;}

.btn.primary {
  background: var(--gradient-1);
  color: white;
  box-shadow: var(--shadow-lg);
}

.btn.primary:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-xl);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn.primary:active {transform: translateY(-1px);}

.btn.secondary {
  background: var(--glass-bg);
  color: var(--brand-secondary);
  border: 2px solid var(--brand-secondary);
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(12px);
}

.btn.secondary:hover {
  background: var(--brand-secondary);
  color: white;
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.btn.secondary:active {transform: translateY(-1px);}

.btn i {font-size: 1.1em; transition: transform 0.3s ease;}
.btn:hover i {transform: translateX(4px);}

/* ===== CONTENT CARDS ===== */
.content-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border-radius: var(--radius-2xl);
  box-shadow: var(--glass-shadow);
  padding: 2.5rem;
  margin: 1.5rem 0;
  border: 1px solid var(--glass-border);
  animation: fadeIn 0.6s ease-out;
}

.content-card h2 {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--brand-dark);
  margin-bottom: 1.5rem;
  border-left: 5px solid var(--brand-primary);
  padding-left: 1.5rem;
  line-height: 1.3;
}

.content-card p {
  color: var(--text-secondary);
  font-size: 1.2rem;
  line-height: 1.6;
  padding-left: 1.2rem;
  margin: 1rem 0;
}

.content-card .divider {
  height: 3px;
  background: var(--gradient-4);
  border-radius: var(--radius-full);
  margin: 1.5rem 0 2rem 1.5rem;
  width: 100px;
}

/* ===== CTA CARDS ===== */
.cta-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border-radius: var(--radius-2xl);
  box-shadow: var(--glass-shadow);
  padding: 5rem 4rem;
  margin: 1.5rem 0;
  border: 1px solid var(--glass-border);
  text-align: left;
}

.cta-card h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--brand-dark);
  margin-bottom: 1rem;
  line-height: 1.3;
}

.cta-card p {
  color: var(--text-secondary);
  font-size: var(--text-xl);
  line-height: 1.6;
  margin: 1.5rem 0 2rem 0;
}

.cta-card .divider {
  height: 4px;
  background: var(--gradient-1);
  border-radius: var(--radius-full);
  width: 7.2rem;
}

.cta-card ul {
  list-style: none;
  padding-left: 0;
  margin-bottom: 4rem;
}

.cta-card li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.5rem;
  line-height: 1.6;
  color: var(--text-primary);
  font-size: var(--text-base);
  text-align: left;
}

.cta-card li::before {
  content: "✓";
  position: absolute;
  left: 0rem;
  color: var(--brand-secondary);
  font-weight: 700;
}

/* ===== COMPETENCIES SECTION ===== */
.competencies-section {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border-radius: var(--radius-2xl);
  box-shadow: var(--glass-shadow);
  padding: 2.5rem;
  margin: 1.5rem 0;
  border: 1px solid var(--glass-border);
}

.competencies-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--brand-dark);
  border-left: 5px solid var(--brand-primary);
  padding-left: 1.5rem;
  text-align: left;
  margin-bottom: 1rem;
}

.competencies-section .divider {
  height: 3px;
  background: var(--gradient-4);
  border-radius: var(--radius-full);
  margin: 1.5rem 0 2rem 1.5rem;
  width: 100px;
}

.competencies-subtitle {
  color: var(--text-primary);
  font-size: 1.2rem;
  line-height: 1.6;
  padding-left: 1.5rem;
  margin: 1rem 0 1.5rem;
}

.competencies-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(272px, 1fr));
  gap: 2.5rem;
  margin: 3rem 1rem ;
}

.competency-card {
  background: white;
  padding: 2rem 1.5rem;
  border-radius: var(--radius-xl);
  text-align: center;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-md);
  height: 100%;
}

.competency-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.competency-card i {
  font-size: 3rem;
  color: var(--brand-primary);
  margin-bottom: 1.5rem;
  display: block;
  transition: transform 0.3s ease;
}

.competency-card:hover i {transform: scale(1.1);}

.competency-card h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

/* ===== TIMELINE SECTION ===== */
.timeline-section {
  max-width: 1200px;
  margin: 2rem 0;
  padding: 2.5rem;
  position: relative;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
}

.timeline-section h2 {
  font-size: 2rem;
  color: white;}

.section-title i {
  font-size: 2rem;
   color: white;}

.section-title {
    display: flex;
    flex-direction: row;
    align-items: center;
    background: var(--brand-dark);
    padding: 2rem 3rem;
    margin: -2rem -2rem 0rem -2rem;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    gap: 2rem;}

.timeline {position: relative; margin-left: -3rem;}

.timeline-item {
  position: relative;
  margin-bottom: 2rem; 
}

.timeline::before {
  content: '';
  position: absolute;
  left: 3.5rem;
  top: 3.5rem;
  width: 4px;
  height: calc(100% - 80px);
  background: var(--gradient-5);
  border-radius: 2px;
  z-index: 1;
}

.timeline-marker {
  position: absolute;
  left: 3rem;
  top: 3.3rem;
  width: 17px;
  height: 17px;
  background: var(--brand-dark);
  border: 3px solid var(--bg-primary);
  border-radius: 50%;
  z-index: 3;
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.2);
}

.timeline-content {
  background: var(--bg-primary);
  padding: 3rem 2rem 3rem 5rem;
  border-radius: var(--radius-lg);
  margin-left: 1rem;
  position: relative;
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
}

.timeline-content:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-xl);
}

.timeline-content h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--brand-dark);
  margin-bottom: 0.3rem;
}

.company-location {
  color: var(--text-primary);
  font-size: 1.3rem;
  font-weight: 500;
  margin-bottom: 0.3rem;
}

.duration {
  color: var(--text-secondary);
  font-size: 1.1rem;
  font-weight: 500;
  margin-bottom: 1rem;
  display: block;
}

.timeline-content ul {
  list-style: none;
  padding-left: 0;
}

.timeline-content li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.1rem;
  line-height: 1.6;
  color: var(--text-primary);
  font-size: var(--text-lg);
}

.timeline-content li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: #049464;
  font-weight: 700;
}

.achievement {
  background: #5fcfaa1f;
  border-radius: var(--radius-md);
  margin: 2rem 0;
  padding: 0.1rem 0;
  overflow: hidden;
  position: relative;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.achievement::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 4px;
  background: #046947;
}

.achievement-header {
  display: flex;
  gap: 1rem;
  padding: 1.5rem 1.5rem 0.5rem 1.5rem;
}

.achievement-header i {
  color: #046947;
  font-size: 1.5rem;
  filter: drop-shadow(0 2px 3px #0fe421a9);
}

.achievement-header h4 {
  margin: 0;
  font-size: 1.3rem;
  font-weight: 700;
  color: #046947;
  letter-spacing: 0.5px;
}

.achievement p {
  margin: 0;
  padding: 0 0 1rem 4.2rem;
  font-size: 1.1rem;
  line-height: 1.5;
  color: var(--text-primary);
  font-weight: 500;
}

/* ===== EDUCATION & CERTIFICATIONS ===== */
.education-section,
.certifications-section {
  max-width: 1200px;
  margin: 2rem 0;
  padding: 2.5rem;
  position: relative;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);}


.education-title,
.certifications-title {
  display: flex;
  align-items: center;  
  justify-content: left;  
  background: var(--brand-dark);
  padding: 2.5rem 3rem;
  margin: -2rem -2rem 2rem -2rem;
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  gap: 2rem;
}

.education-title h2,
.certifications-title h2 {
  font-size: 2rem;
  color: white;
  border: none;
  margin: 0 -1rem; 
  line-height: 1.2;  
}

.education-title i,
.certifications-title i {
  font-size: 2rem;
  color: white;
  line-height: 1.2;        
}

.education-grid {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.education-entry,
.certifications-entry {
  background: white;
  padding: 3rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
}

.education-entry:hover {
  transform: translateX(5px);
  box-shadow: var(--shadow-lg);
}

.education-entry h3 {
  font-size: var(--text-2xl);
  font-weight: 700;
  margin-left: 1.2rem;
  color: var(--brand-secondary);
}

.education-entry .institution {
  font-weight: 600; 
  color: var(--text-primary);
  margin: 0;
}

.education-entry .year {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin: 0;
}

.certifications-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.certifications-entry:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.certifications-entry h3 {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-left: 1rem;
}

/* Fixed typo: .certifications-entry (was .certifiations-entry) */
.certifications-entry .institution {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-left: 1rem;
}

.certification-link {
  display: inline-flex;
  gap: 0.5rem;
  color: var(--brand-primary);
  text-decoration: none;
  font-weight: 600;
  font-size: var(--text-md);
  margin-top: 0.5rem;
  margin-left: 1rem;
  transition: color 0.3s ease;
}

.certification-link:hover {color: var(--brand-secondary);}

/* ===== SKILLS SECTION ===== */
.skills-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.skills-box {
  background: white;
  padding: 1.9rem;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  transition: transform 0.3s ease;
  border: 1px solid var(--border-light);
}

.skills-box:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.skills-icon-container {
  text-align: center;
  margin-bottom: 1.5rem;
}

.skills-icon-container i {
  font-size: 3rem;
  color: var(--brand-secondary);
}

.skills-box h3 {
  color: var(--brand-secondary);
  margin-bottom: 1.5rem;
  text-align: center;
  font-size: 1.7rem;
}

.skills-divider {
  height: 2px;
  background: var(--gradient-2);
  margin: 1.5rem 0;
}

.skills-box ul {
  list-style: none;
  padding: 0;
  margin: 0 0 1.9rem 0;
}

.skills-box li {
  padding: 0.3rem 0.5rem;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  display: flex;
  align-items: center;
  font-size: 1.1rem;
}

.skills-box li:before {
  content: "•";
  color: var(--brand-primary);
  font-weight: bold;
  margin-right: 0.75rem;
  font-size: 1.5rem;
}

.skill-meter {
  height: 8px;
  background: rgba(0, 0, 0, 0.1);
  border-radius: 4px;
  overflow: hidden;
}

.skill-level {
  height: 100%;
  background: var(--gradient-1);
  border-radius: 4px;
  width: 0;
  transition: width 1s ease;
}

/* ===== TESTIMONIALS ===== */
.testimonial-carousel {
  overflow: hidden;
  border-radius: var(--radius-2xl);
  background: white;
  box-shadow: var(--shadow-xl);
  margin: 2rem 0;
  padding: 3rem;
  position: relative;
}

.testimonial-slide {
  display: none;
  animation: fadeIn 0.5s ease;
}

.testimonial-slide.active {
  display: block;
}

.testimonial-content {
  text-align: center;
  max-width: 1100px;
  margin: 0 auto;
}

.testimonial-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  margin: 0 auto 1.5rem;
  background: var(--gradient-1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 2.5rem;
  font-weight: 600;
}

.testimonial-content p {
  font-style: italic;
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
  line-height: 1.6;
  color: var(--text-primary);
  padding: 0 2rem;
}

.stars-container {
  color: var(--stars);
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.testimonial-content h3 {
  color: var(--brand-secondary);
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.testimonial-content span {
  color: var(--text-secondary);
  font-size: 1rem;
}

.testimonial-dots {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 2rem;
}

.testimonial-dots .dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--border-light);
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  padding: 0;
}

.testimonial-dots .dot.active,
.testimonial-dots .dot:hover {
  background-color: var(--brand-secondary);
  transform: scale(1.2);
}

/* ===== PORTFOLIO NAVIGATION ===== */
.portfolio-nav {
  margin: 3rem 0 2rem 0;
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  width: 100%;
  padding: 0;
  position: relative;
}

.nav-link-portfolio {
  padding: 0.8rem 1.1rem;
  background: var(--glass-bg);
  border-radius: var(--radius-full);
  color: var(--text-primary);
  font-weight: 600;
  font-size: 1.1rem;
  cursor: pointer;
  backdrop-filter: blur(20px);
  border: 2px solid var(--border-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.7rem;
  white-space: nowrap;
  flex-shrink: 0;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.nav-link-portfolio::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.6s ease;
}

.nav-link-portfolio:hover::before {
  left: 100%;
}

.nav-link-portfolio:hover:not(.active) {
  background: var(--brand-light);
  color: var(--text-primary);
  border-color: var(--brand-primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.nav-link-portfolio.active,
.nav-link-portfolio.active:hover {
  background: var(--gradient-1);
  color: white;
  box-shadow: var(--shadow-xl);
  border-color: transparent;
  transform: translateY(-3px);
}

.nav-link-portfolio i {
  font-size: 1.1em;
  transition: transform 0.3s ease;
}

.nav-link-portfolio:hover i {
  transform: scale(1.1);
}

.portfolio-content {
  margin-top: 1.5rem;
}

.portfolio-category,
.branding-subcategory {
  display: block;
  animation: fadeIn 0.5s ease;
}

.portfolio-category[hidden],
.branding-subcategory[hidden] {
  display: none;
}

/* ===== BRANDING SUB-NAVIGATION ===== */
.branding-subnav-wrapper {
  margin: 2rem 0 -2rem 0;
  background: linear-gradient(135deg, 
    rgba(37, 99, 235, 0.05), 
    rgba(147, 51, 234, 0.05));
  border: 1px solid rgba(37, 99, 235, 0.1);
  border-radius: var(--radius-xl);
  padding: 1rem 2rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  animation: slideInDown 0.4s ease-out;
}

@keyframes slideInDown {
  from {opacity: 0; transform: translateY(-10px);}
  to {opacity: 1; transform: translateY(0);}
}

.branding-subnav-header {
  display: flex;
  align-items: center;
  margin-bottom: 0.3rem;
}

.subnav-label {
  font-weight: 600;
  color: var(--brand-secondary);
  font-size:1.2rem;
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.subnav-label::before {
  content: '';
  display: block;
  width: 12px;
  height: 12px;
  background: var(--gradient-1);
  border-radius: 50%;
  flex-shrink: 0;
}

.branding-scroll-nav {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.scroll-nav-container {
  display: flex;
  justify-content:flex-start;
  gap: 1rem;
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--brand-primary) transparent;
  padding: 0.5rem;
  margin: 0;
  -webkit-overflow-scrolling: touch;
  scroll-behavior: smooth;
  flex: 1;
  min-height: 50px;
}

.scroll-nav-container::-webkit-scrollbar {height: 3px;}
.scroll-nav-container::-webkit-scrollbar-track {
  background: transparent;
  border-radius: var(--radius-full);
}
.scroll-nav-container::-webkit-scrollbar-thumb {
  background: var(--brand-primary);
  border-radius: var(--radius-full);
}

.scroll-nav-item {
  flex-shrink: 0;
  padding: 0.1rem 1.5rem;
  background: var(--glass-bg);
  border: 1.5px solid var(--text-muted);
  border-radius: var(--radius-full);
  color: var(--text-primary);
  font-weight: 600;
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.7rem;
  white-space: nowrap;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  backdrop-filter: blur(11px);
  position: relative;
  overflow: hidden;
  min-height: 40px;
}

.scroll-nav-item i {
  font-size: 1.5rem;
  transition: transform 0.3s ease;
  color: var(--brand-primary);
}

.scroll-nav-item:hover {
  background: rgba(37, 99, 235, 0.1);
  border-color: var(--brand-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.scroll-nav-item:hover i {transform: scale(1.1);}

.scroll-nav-item.active {
  background: var(--gradient-1);
  color: white;
  border-color: transparent;
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.scroll-nav-item.active i {
  color: white;
  transform: scale(1.1);
}

.scroll-nav-more {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  background: var(--glass-bg);
  border: 1.5px solid var(--glass-border);
  border-radius: var(--radius-full);
  color: var(--brand-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  backdrop-filter: blur(12px);
}

.scroll-nav-more:hover {
  background: rgba(37, 99, 235, 0.1);
  border-color: var(--brand-primary);
  transform: translateY(-2px);
}

/* ===== PORTFOLIO GRID ===== */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.portfolio-card {
  background: white;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid var(--border-light);
  cursor: pointer;
  text-align: left;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.portfolio-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-2xl);
}

.portfolio-image {
  width: 100%;
  height: 220px;
  object-fit: cover;
  aspect-ratio: 16 / 9;
  transition: transform 0.6s ease;
}

.portfolio-card:hover .portfolio-image {transform: scale(1.08);}

.card-content {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  text-align: left;
  padding: 1rem 0 0 0;
}

.card-content h3 {
  color: var(--brand-secondary);
  font-size: 1.4rem;
  font-weight: 700;
  margin-top: 0.85rem;
  margin-bottom: 0.5rem;
  line-height: 1.4;
  text-align: left;
}

.card-content p {
  color: var(--text-secondary);
  font-size: var(--text-base);
  line-height: 1.6;
  flex-grow: 1;
  padding: 0;
  margin: 0;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  margin: 0.9rem 0;
}

.tags span {
  background: var(--brand-light);
  color: var(--text-primary);
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 400;
  transition: all 0.3s ease;
}

.tags span:hover {
  background: var(--brand-primary);
  color: white;
  transform: translateY(-1px);
}

.video-placeholder {
  position: relative;
  width: 100%;
  height: 220px;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.video-placeholder i {
  font-size: 4.5rem;
  color: white;
  z-index: 2;
  position: relative;
  text-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  transition: transform 0.3s ease;
}

.portfolio-card:hover .video-placeholder i {transform: scale(1.1);}

.video-placeholder img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.8;
  transition: all 0.6s ease;
}

.portfolio-card:hover .video-placeholder img {
  opacity: 0.9;
  transform: scale(1.05);
}

.website-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--brand-primary);
  text-decoration: none;
  font-weight: 600;
  font-size: var(--text-base);
  padding: 0.7rem 1.5rem;
  background: var(--brand-light);
  border-radius: var(--radius-full);
  transition: all 0.3s ease;
  margin-top: auto;
  align-self: flex-start;
}

.website-link:hover {
  background: var(--brand-primary);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ===== CONTACT SECTION ===== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(292px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
  padding: 1rem;
}

.contact-method-card {
  background: var(--glass-bg);
  padding: 2rem 1rem;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  text-align: center;
  transition: all 0.3s ease;
  border: 1px solid var(--border-light);
}

.contact-method-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.contact-method-card i {
  font-size: 2.5rem;
  color: var(--brand-primary);
  margin: 0 auto 1.5rem;
  display: block;
}

.contact-method-info h3 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.contact-link {
  font-size: 1.1rem;
  color: var(--brand-primary);
  text-decoration: none;
  font-weight: 500;
}

.contact-link:hover {
  color: var(--brand-secondary);
  text-decoration: underline;
}

.contact-method-info p {
  font-size: 1rem;
  font-weight: 400;
  color: var(--text-secondary);
  padding: 0.4rem 0;
  margin: 0;
}

.contact-form-section {
  margin-top: 3rem;
  padding: 0 0 2rem 0;
}

.form-description {
  color: var(--text-secondary);
  margin-bottom: 2rem;
  font-size: var(--text-base);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  padding: 1rem 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-label {
  color: var(--text-primary);
  font-weight: 600;
  margin: 0 0 0.5rem 0;
  font-size: 1rem;
}

.form-input,
.form-textarea {
  padding: 0.875rem 1rem;
  border: 2px solid var(--border-light);
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  color: var(--text-primary);
  background: white;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-input:focus,
.form-textarea:focus {
  border-color: var(--brand-primary);
  outline: none;
  box-shadow: 0 0 0 3px var(--brand-light);
}

.form-textarea {
  resize: vertical;
  min-height: 150px;
}

.form-actions {
  display: flex;
  gap: 1.9rem;
  margin: 2rem;
  grid-column: 1 / -1;
}

/* ===== BACK TO TOP BUTTON ===== */
#backToTop {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 50px;
  height: 50px;
  background: var(--gradient-1);
  color: white;
  border: none;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-xl);
  cursor: pointer;
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

#backToTop.show {
  opacity: 1;
  visibility: visible;
}

#backToTop:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

/* ===== TOAST NOTIFICATION ===== */
.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--success);
  color: white;
  padding: 1rem 1.5rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-2xl);
  z-index: 10000;
  opacity: 0;
  transition: all 0.4s ease;
  max-width: 400px;
  text-align: center;
}

.toast.show {opacity: 1; transform: translateX(-50%) translateY(0);}
.toast-error {background: var(--error);}
.toast-warning {background: var(--warning);}
.toast-info {background: var(--info);}

/* ===== REVEAL ANIMATIONS ===== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease;
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ===============================================
   RESPONSIVE STYLES
   =============================================== */

/* ===== TABLET (991px and below) ===== */
@media (max-width: 991px) {
  .container {grid-template-columns: 1fr; gap: 0;}
  .mobile-header {display: flex;}
  .hamburger {display: flex;}
  .sidebar {display: none !important;}
  .main-content {margin-top: var(--header-height);}
}

/* ===== TABLET (630px to 991px) - Special Sidebar Handling ===== */
@media (min-width: 630px) and (max-width: 991px) {
  html { font-size: 82%;}
  .container {display: flex; grid-template-columns: none;}
  .container.collapsed { grid-template-columns: none;}

  .sidebar {
    display: flex !important;
    visibility: visible;
    opacity: 1;
    width: var(--sidebar-collapsed) !important;
    position: fixed;
    top: calc(var(--header-height) - 7px);
    left: 12px;
    height: calc(100vh - 40px);
    flex-shrink: 0;
    margin: 0;
    padding: 19px 7px;
    align-items: center;
    justify-content: flex-start;
    z-index: 100;
  }
  
  .sidebar-header {display: none;}
  
  .sidebar .tagline,
  .sidebar .contact-info,
  .sidebar .contact-item,
  .sidebar .nav-link .nav-text,
  .sidebar .contact-text {
    opacity: 0;
    width: 0;
    height: 0;
    pointer-events: none;
    margin: 0;
    overflow: hidden;
  }
  
  .sidebar .avatar {
    width: 60px;
    height: 63px;
    margin: 20px auto;
  }
  
  .sidebar .divider {
    margin: 10px 0;
    width: 30px;
  }
  
  .sidebar .name {
    font-size: 0.75rem;
    margin: 10px 0;
    white-space: wrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  
  .sidebar .nav-link {
    justify-content: center;
    padding: 12px;
    margin: 10px auto;
    width: 40px;
    height: 40px;
    border-radius: 50%;
  }
  
  .sidebar .nav-link i {
    margin: 0;
    font-size: 1.2rem;
  }
  
  .sidebar .footer {
    font-size: 0.7rem;
    margin-top: 20px;
  }
  
  .mobile-header {
    display: flex !important;
    visibility: visible !important;
    opacity: 1 !important;
    height: var(--header-height);
    padding: 0 16px;
    border-bottom: 2px solid var(--glass-border);
    z-index: 9999;
  }
  
  .hamburger {display: flex !important;}
  .mobile-menu-overlay {display: block !important;}
  
  .main-content {
    margin-left: calc(var(--sidebar-collapsed) + 12px) !important;
    margin-top: 0;
    padding-top: calc(var(--header-height) + 5px);
    padding-bottom: 30px;
    padding-left: 19px;
    padding-right: 19px;
    width: calc(100% - var(--sidebar-collapsed) - 30px);
  }
  
  .hero { padding: 30px; margin: 11px 0; border-radius: var(--radius-xl); }
  .content-card { padding: 30px; margin: 11px 0; }
  .competencies-section { padding: 30px; margin: 11px 0; }
  .competencies-grid { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 15px; }
  .timeline-section { max-width: 100%; padding: 30px; margin: 11px 0; }
  .timeline-content { margin-left: 20px; }
  .timeline-content h3 { font-size: 1.1rem; }
  .timeline-content p { font-size: 0.95rem; }
  .skills-container { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); padding: 25px; margin: 11px 0; }
  .portfolio-grid { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; }
}

/* ===== MOBILE (629px and below) ===== */
@media (max-width: 629px) {
  html { font-size: 79%; }
  body { padding: 0.5rem; }
  .container { display: block; padding-top: 0; max-width: 100%; min-height: auto; }
  
  .sidebar { display: none !important; visibility: hidden !important; opacity: 0 !important; }
  
  .mobile-header {
    display: flex;
    visibility: visible;
    opacity: 1;
    height: var(--header-height);
    padding: 0 16px;
    border-bottom: 2px solid var(--glass-border);
  }
  
  .hamburger {display: flex;}
  .mobile-menu-overlay {display: block;}
  
  .main-content {
    margin-left: 0 !important;
    margin-top: 0;
    padding-top: calc(var(--header-height) + 20px);
    padding-bottom: 30px;
    padding-left: 19px;
    padding-right: 19px;
    width: 100%;
  }
  
  .hero { padding: 30px; margin: 11px 0; border-radius: var(--radius-xl); }
  .content-card { padding: 30px; margin: 11px 0; }
  .competencies-section { padding: 30px; margin: 11px 0; }
  .competencies-grid { grid-template-columns: 1fr; gap: 15px; }
  
  .timeline-section { max-width: 100%; padding: 30px; margin: 11px 0; }
  .timeline-content { margin-left: 20px; }
  .timeline-content h3 { font-size: 1.1rem; }
  .timeline-content p { font-size: 0.95rem; }
  
  .skills-container { grid-template-columns: 1fr; padding: 15px; margin: 10px 0; }
  .skills-box { padding: 20px; }
  .contact-grid { grid-template-columns: 1fr; gap: 15px; }
  
  .portfolio-nav { justify-content: flex-start; overflow-x: auto; padding-bottom: 0.5rem; }
  .portfolio-nav .nav-link-portfolio { flex-shrink: 0; }
  .portfolio-grid { grid-template-columns: 1fr; gap: 20px; padding: 0 5px; }
  .portfolio-card { padding: 15px; }
  
  .form-grid { grid-template-columns: 1fr; }
  .contact-method-card { padding: 18px; }
  .contact-form-section { margin-top: 20px; }
  
  .toast { bottom: 15px; padding: 12px 18px; font-size: 0.9rem; }
  
  .hero-card h1 { font-size: 2rem; }
  .hero .name { font-size: 2.2rem; }
  .hero-cta { flex-direction: column; gap: 0.75rem; }
  .btn { width: 100%; justify-content: center; }
}

/* ===== SMALL MOBILE (480px and below) ===== */
@media (max-width: 480px) {
  .mobile-header h1 { font-size: 1.1rem; }
  .mobile-tagline { font-size: 0.75rem; }
  .hero-card h1 { font-size: 1.75rem; }
  /* Fixed typo: was 20rem - now 2rem */
  .hero .name { font-size: 2rem; }
  .mobile-menu-container { width: 100%; border-radius: 0; }
  
  .testimonial-content p {
    font-size: 1rem;
    padding: 0;
  }
  
  .testimonial-prev,
  .testimonial-next {
    position: static;
    transform: none;
    margin-top: 1rem;
  }
}

/* ===== HIGH DPI/RETINA DISPLAYS ===== */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  .avatar,
  .portfolio-card img {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
  }
}

/* ===== REDUCED MOTION PREFERENCES ===== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .shape { animation: none; }
  .hamburger span { transition: none; }
  .reveal { transition: none; opacity: 1; transform: none; }
}