/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Montserrat:wght@500;600;700;800&display=swap');

/* Design System - Global Custom Properties */
:root {
  /* HSL Color Space Values for smooth theme switching */
  --hue-teal: 174;
  --hue-mint: 150;
  --hue-slate: 215;
  
  --primary-color: hsl(var(--hue-teal), 75%, 40%);
  --primary-hover: hsl(var(--hue-teal), 75%, 32%);
  --primary-light: hsl(var(--hue-teal), 75%, 95%);
  --accent-color: hsl(var(--hue-mint), 65%, 45%);
  --accent-hover: hsl(var(--hue-mint), 65%, 37%);
  --accent-light: hsl(var(--hue-mint), 65%, 95%);
  
  /* Shared Defaults */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --border-radius-sm: 8px;
  --border-radius-md: 16px;
  --border-radius-lg: 24px;
  --border-radius-full: 9999px;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.12);
  
  /* Font Family Defaults */
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-heading: 'Montserrat', -apple-system, sans-serif;
  
  /* Default Theme: Light Mode */
  --bg-color: hsl(var(--hue-slate), 30%, 98%);
  --bg-card: hsl(var(--hue-slate), 0%, 100%);
  --bg-nav: rgba(250, 251, 252, 0.85);
  --text-color: hsl(var(--hue-slate), 30%, 15%);
  --text-muted: hsl(var(--hue-slate), 15%, 45%);
  --text-light: hsl(var(--hue-slate), 10%, 65%);
  --border-color: hsl(var(--hue-slate), 20%, 90%);
  --input-bg: hsl(var(--hue-slate), 20%, 96%);
  --shadow-glow: rgba(0, 180, 162, 0.15);
  
  scroll-behavior: smooth;
}

/* Dark Mode Theme Overrides */
[data-theme="dark"] {
  --primary-light: hsl(var(--hue-teal), 75%, 15%);
  --accent-light: hsl(var(--hue-mint), 65%, 15%);
  
  --bg-color: hsl(var(--hue-slate), 30%, 8%);
  --bg-card: hsl(var(--hue-slate), 25%, 12%);
  --bg-nav: rgba(13, 20, 30, 0.85);
  --text-color: hsl(var(--hue-slate), 20%, 95%);
  --text-muted: hsl(var(--hue-slate), 15%, 72%);
  --text-light: hsl(var(--hue-slate), 10%, 55%);
  --border-color: hsl(var(--hue-slate), 20%, 18%);
  --input-bg: hsl(var(--hue-slate), 20%, 16%);
  --shadow-glow: rgba(0, 180, 162, 0.3);
  --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.4);
}

/* Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-color);
}

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition-fast);
}

button, input, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  border: none;
  background: none;
}

button {
  cursor: pointer;
}

ul {
  list-style: none;
}

img {
  max-width: 100%;
  display: block;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Helper Utility Classes */
.text-gradient {
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-padding {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 60px;
}

.section-header h2 {
  font-size: 2.5rem;
  margin-bottom: 16px;
  position: relative;
  display: inline-block;
}

.section-header h2::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
  border-radius: var(--border-radius-full);
}

.section-header p {
  color: var(--text-muted);
  font-size: 1.1rem;
}

/* Premium Navigation Header */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: var(--bg-nav);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: background-color var(--transition-normal), border-color var(--transition-normal), transform var(--transition-normal);
}

header.scrolled {
  box-shadow: var(--shadow-sm);
  padding: 8px 0;
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
  transition: height var(--transition-normal);
}

header.scrolled .container {
  height: 64px;
}

.logo {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo svg {
  width: 32px;
  height: 32px;
  color: var(--primary-color);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text-muted);
  position: relative;
  padding: 8px 0;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-color);
  transition: width var(--transition-fast);
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Elegant Theme Switcher Button */
.theme-toggle-btn {
  width: 44px;
  height: 44px;
  border-radius: var(--border-radius-full);
  background-color: var(--input-bg);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-color);
  transition: background-color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.theme-toggle-btn:hover {
  transform: scale(1.05);
  background-color: var(--border-color);
}

.theme-toggle-btn svg {
  width: 20px;
  height: 20px;
  transition: transform var(--transition-slow);
}

.theme-toggle-btn .sun-icon {
  display: none;
}

[data-theme="dark"] .theme-toggle-btn .sun-icon {
  display: block;
}

[data-theme="dark"] .theme-toggle-btn .moon-icon {
  display: none;
}

/* Call-to-action button */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--border-radius-md);
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  color: white;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px var(--shadow-glow);
}

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

.btn-secondary:hover {
  background-color: var(--input-bg);
  border-color: var(--text-light);
  transform: translateY(-2px);
}

/* Mobile Hamburger Menu */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  z-index: 1001;
}

.hamburger span {
  width: 100%;
  height: 2.5px;
  background-color: var(--text-color);
  border-radius: 4px;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

/* Hero Section */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 100px;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 10%;
  right: -5%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0, 180, 162, 0.08) 0%, rgba(0, 0, 0, 0) 70%);
  border-radius: var(--border-radius-full);
  z-index: -1;
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 60px;
  align-items: center;
}

.hero-content h3 {
  font-size: 1.2rem;
  color: var(--primary-color);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.hero-content h1 {
  font-size: 3.5rem;
  margin-bottom: 20px;
  font-weight: 800;
}

.hero-content p {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 36px;
  max-width: 600px;
}

.hero-cta {
  display: flex;
  gap: 16px;
}

.hero-img-container {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-img-card {
  width: 100%;
  max-width: 380px;
  aspect-ratio: 4/5;
  background-color: var(--bg-card);
  border-radius: var(--border-radius-lg);
  padding: 16px;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-slow);
}

.hero-img-card:hover {
  transform: translateY(-8px) rotate(1deg);
}

.hero-img-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 50%;
  height: 100%;
  background: linear-gradient(to right, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.15) 100%);
  transform: skewX(-25deg);
  transition: 0.75s;
}

.hero-img-card:hover::after {
  left: 125%;
}

.hero-img-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--border-color);
}

.hero-badge {
  position: absolute;
  bottom: 32px;
  right: -16px;
  background-color: var(--bg-card);
  padding: 12px 20px;
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: 200px;
}

.hero-badge-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius-full);
  background-color: var(--accent-light);
  color: var(--accent-color);
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-badge-icon svg {
  width: 20px;
  height: 20px;
}

.hero-badge-text h4 {
  font-size: 0.95rem;
  font-weight: 700;
}

.hero-badge-text p {
  font-size: 0.75rem;
  margin: 0;
  color: var(--text-muted);
}

/* Statistics Counters */
.stats-container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 60px;
  position: relative;
  z-index: 10;
}

.stat-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: 32px 24px;
  text-align: center;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.stat-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 30px var(--shadow-glow);
}

.stat-card h3 {
  font-size: 2.25rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.stat-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
}

/* About Section */
.about-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 60px;
  align-items: center;
}

.about-summary-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-md);
}

.about-summary-card h3 {
  font-size: 1.5rem;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--border-color);
}

.info-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.info-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.info-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius-sm);
  background-color: var(--primary-light);
  color: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.info-icon svg {
  width: 20px;
  height: 20px;
}

.info-details label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.info-details span {
  font-size: 1rem;
  font-weight: 600;
}

.about-text h3 {
  font-size: 1.8rem;
  margin-bottom: 16px;
}

.about-text p {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.highlights-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.highlight-item {
  display: flex;
  align-items: center;
  gap: 12px;
}

.highlight-icon {
  color: var(--accent-color);
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.highlight-icon svg {
  width: 20px;
  height: 20px;
}

.highlight-item span {
  font-weight: 500;
}

/* Sales & Achievements (Custom Interactive Chart) */
.growth-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-md);
  margin-top: 40px;
}

.growth-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 30px;
  flex-wrap: wrap;
  gap: 16px;
}

.growth-header h3 {
  font-size: 1.4rem;
}

.growth-legend {
  display: flex;
  gap: 24px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  font-weight: 500;
}

.legend-color {
  width: 14px;
  height: 14px;
  border-radius: 4px;
}

.legend-primary { background-color: var(--primary-color); }
.legend-accent { background-color: var(--accent-color); }

.chart-wrapper {
  position: relative;
  width: 100%;
}

.chart-svg {
  width: 100%;
  height: 320px;
  display: block;
}

.chart-gridline {
  stroke: var(--border-color);
  stroke-dasharray: 4 4;
}

.chart-axis-line {
  stroke: var(--text-light);
  stroke-width: 1.5;
}

.chart-label {
  fill: var(--text-muted);
  font-family: var(--font-body);
  font-size: 11px;
}

.chart-label-y {
  text-anchor: end;
}

.chart-label-x {
  text-anchor: middle;
}

.chart-path-main {
  fill: none;
  stroke: var(--primary-color);
  stroke-width: 4;
  stroke-linecap: round;
  stroke-linejoin: round;
  filter: drop-shadow(0 4px 10px rgba(0, 180, 162, 0.2));
  transition: stroke-dashoffset 2s ease-in-out;
}

.chart-path-fill {
  fill: url(#chart-gradient);
  opacity: 0.15;
}

.chart-dot {
  fill: var(--bg-card);
  stroke: var(--primary-color);
  stroke-width: 3.5;
  cursor: pointer;
  transition: r var(--transition-fast), fill var(--transition-fast), stroke-width var(--transition-fast);
}

.chart-dot:hover {
  r: 8;
  fill: var(--primary-color);
  stroke-width: 2.5;
}

/* Chart Tooltip */
.chart-tooltip {
  position: absolute;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  padding: 12px 16px;
  box-shadow: var(--shadow-md);
  pointer-events: none;
  opacity: 0;
  transform: translate(-50%, -100%) scale(0.9);
  transition: opacity var(--transition-fast), transform var(--transition-fast);
  z-index: 10;
  min-width: 180px;
}

.chart-tooltip::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 50%;
  transform: translateX(-50%) rotate(45deg);
  width: 10px;
  height: 10px;
  background-color: var(--bg-card);
  border-right: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.tooltip-title {
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.tooltip-val {
  font-weight: 800;
  color: var(--primary-color);
  font-size: 1.1rem;
}

.tooltip-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Experience Timeline */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding: 20px 0;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 31px;
  top: 0;
  width: 3px;
  height: 100%;
  background: linear-gradient(to bottom, var(--primary-color) 0%, var(--border-color) 100%);
  border-radius: var(--border-radius-full);
}

.timeline-item {
  position: relative;
  padding-left: 80px;
  margin-bottom: 60px;
}

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

.timeline-marker {
  position: absolute;
  left: 18px;
  top: 0;
  width: 29px;
  height: 29px;
  border-radius: var(--border-radius-full);
  background-color: var(--bg-color);
  border: 4px solid var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 5;
  box-shadow: 0 0 0 4px var(--bg-color);
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.timeline-item:hover .timeline-marker {
  transform: scale(1.15);
  border-color: var(--accent-color);
}

.timeline-content {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: 32px;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.timeline-content:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 8px;
}

.timeline-header h3 {
  font-size: 1.35rem;
}

.timeline-company {
  font-size: 1.05rem;
  color: var(--primary-color);
  font-weight: 600;
  margin-top: 4px;
}

.timeline-date {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  background-color: var(--primary-light);
  color: var(--primary-color);
  padding: 6px 14px;
  border-radius: var(--border-radius-full);
}

.timeline-item:nth-child(even) .timeline-date {
  background-color: var(--accent-light);
  color: var(--accent-color);
}

.timeline-text {
  color: var(--text-muted);
  margin-bottom: 20px;
}

.timeline-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-left: 4px;
}

.timeline-list-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.timeline-bullet {
  color: var(--primary-color);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  margin-top: 4px;
}

.timeline-bullet svg {
  width: 14px;
  height: 14px;
}

.timeline-list-item span {
  font-size: 0.95rem;
}

.detailing-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 50px;
  align-items: stretch;
}

/* Skills Grid */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.skill-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: 36px 28px;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.skill-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.skill-card-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--border-radius-sm);
  background-color: var(--primary-light);
  color: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}

.skill-card-icon svg {
  width: 26px;
  height: 26px;
}

.skill-card h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
}

.skill-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

#skill-card-ai {
  grid-column: span 3;
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 36px 40px;
}

#skill-card-ai .skill-card-icon {
  margin-bottom: 0;
  flex-shrink: 0;
}

#skill-card-ai .skill-card-content {
  flex-grow: 1;
}

#skill-card-ai h3 {
  margin-bottom: 8px;
}

/* Languages and Education Grid */
.edu-lang-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 40px;
  align-items: flex-start;
}

.education-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.education-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: 28px;
  display: flex;
  gap: 20px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast);
}

.education-card:hover {
  transform: translateX(4px);
}

.education-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--border-radius-sm);
  background-color: var(--accent-light);
  color: var(--accent-color);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.education-icon svg {
  width: 24px;
  height: 24px;
}

.education-details h3 {
  font-size: 1.15rem;
  margin-bottom: 4px;
}

.education-school {
  font-size: 0.95rem;
  color: var(--primary-color);
  font-weight: 600;
  margin-bottom: 4px;
}

.education-meta {
  font-size: 0.8rem;
  color: var(--text-light);
  font-weight: 500;
}

.languages-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: 32px;
  box-shadow: var(--shadow-sm);
}

.languages-card h3 {
  font-size: 1.35rem;
  margin-bottom: 24px;
}

.lang-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.lang-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.lang-header {
  display: flex;
  justify-content: space-between;
  font-weight: 600;
}

.lang-name {
  color: var(--text-color);
}

.lang-level {
  color: var(--primary-color);
  font-size: 0.85rem;
}

.lang-bar-bg {
  width: 100%;
  height: 6px;
  background-color: var(--input-bg);
  border-radius: var(--border-radius-full);
  overflow: hidden;
}

.lang-bar-fg {
  height: 100%;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
  border-radius: var(--border-radius-full);
}

/* Contact Grid */
.contact-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 40px;
}

.contact-info-panel {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

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

.contact-card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--border-radius-sm);
  background-color: var(--primary-light);
  color: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-card-icon svg {
  width: 22px;
  height: 22px;
}

.contact-card-details label {
  display: block;
  font-size: 0.75rem;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 2px;
}

.contact-card-details a, .contact-card-details span {
  font-weight: 600;
  font-size: 0.95rem;
}

.contact-card-details a:hover {
  color: var(--primary-color);
}

/* Reference Card */
.reference-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.reference-card::before {
  content: '"';
  position: absolute;
  top: 10px;
  right: 20px;
  font-size: 8rem;
  color: var(--border-color);
  font-family: Georgia, serif;
  line-height: 1;
  pointer-events: none;
  font-weight: bold;
}

.reference-card h4 {
  font-size: 1.1rem;
  margin-bottom: 16px;
  color: var(--primary-color);
}

.reference-quote {
  font-style: italic;
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 24px;
  position: relative;
  z-index: 2;
}

.reference-author {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.reference-author-name {
  font-weight: 700;
  font-size: 1.05rem;
}

.reference-author-title {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 600;
}

.reference-author-contact {
  font-size: 0.8rem;
  color: var(--text-light);
  margin-top: 4px;
  display: flex;
  flex-direction: column;
}

/* Premium Form Elements */
.contact-form-panel {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-md);
}

.contact-form-panel h3 {
  font-size: 1.5rem;
  margin-bottom: 30px;
}

.form-group {
  position: relative;
  margin-bottom: 24px;
}

.form-input {
  width: 100%;
  padding: 16px;
  background-color: var(--input-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  outline: none;
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.form-input:focus {
  border-color: var(--primary-color);
  background-color: var(--bg-card);
}

.form-label {
  position: absolute;
  left: 16px;
  top: 16px;
  color: var(--text-light);
  pointer-events: none;
  transition: transform var(--transition-fast), font-size var(--transition-fast), color var(--transition-fast);
  transform-origin: left top;
}

.form-input:focus ~ .form-label,
.form-input:not(:placeholder-shown) ~ .form-label {
  transform: translateY(-24px) scale(0.85);
  color: var(--primary-color);
  font-weight: 600;
}

.form-input:focus ~ .form-label {
  color: var(--primary-color);
}

.form-error-msg {
  font-size: 0.75rem;
  color: hsl(0, 75%, 55%);
  margin-top: 6px;
  display: none;
  font-weight: 500;
}

.form-group.has-error .form-input {
  border-color: hsl(0, 75%, 55%);
}

.form-group.has-error .form-error-msg {
  display: block;
}

/* Custom Success Toast popup */
.toast {
  position: fixed;
  bottom: -100px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--bg-card);
  border: 1px solid var(--accent-color);
  border-radius: var(--border-radius-md);
  padding: 16px 28px;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 16px;
  z-index: 2000;
  transition: bottom var(--transition-normal);
  max-width: 90%;
}

.toast.show {
  bottom: 40px;
}

.toast-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--border-radius-full);
  background-color: var(--accent-light);
  color: var(--accent-color);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

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

.toast-text h4 {
  font-size: 0.95rem;
  font-weight: 700;
}

.toast-text p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Footer Section */
footer {
  background-color: var(--bg-card);
  border-top: 1px solid var(--border-color);
  padding: 40px 0;
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-light);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.footer-logo {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--text-color);
}

.footer-nav {
  display: flex;
  gap: 24px;
}

.footer-link:hover {
  color: var(--primary-color);
}

/* Responsive Breakpoints */
@media (max-width: 1024px) {
  .hero-content h1 {
    font-size: 3rem;
  }
  
  .stats-container {
    grid-template-columns: repeat(2, 1fr);
    margin-top: 0;
    padding-top: 40px;
  }
  
  .about-grid, .edu-lang-grid, .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .detailing-grid {
    grid-template-columns: 1fr;
  }
  
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  #skill-card-ai {
    grid-column: span 2;
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 28px 32px;
  }
  
  #skill-card-ai .skill-card-icon {
    margin-bottom: 0;
    flex-shrink: 0;
  }
  
  #skill-card-ai .skill-card-content {
    flex-grow: 1;
  }
  
  #skill-card-ai h3 {
    margin-bottom: 6px;
  }
}

@media (max-width: 768px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }
  
  .hero-content p {
    margin-left: auto;
    margin-right: auto;
  }
  
  .hero-cta {
    justify-content: center;
  }
  
  .hero-img-container {
    order: -1;
  }
  
  .section-header h2 {
    font-size: 2rem;
  }
  
  .timeline::before {
    left: 17px;
  }
  
  .timeline-item {
    padding-left: 50px;
  }
  
  .timeline-marker {
    left: 4px;
  }
  
  .skills-grid {
    grid-template-columns: 1fr;
  }
  
  #skill-card-ai {
    grid-column: span 1;
    display: block;
    padding: 36px 28px;
  }
  
  #skill-card-ai .skill-card-icon {
    margin-bottom: 24px;
  }
  
  /* Mobile Navigation Navigation */
  .hamburger {
    display: flex;
  }
  
  .nav-menu {
    position: fixed;
    top: 80px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 80px);
    background-color: var(--bg-card);
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding-top: 60px;
    gap: 40px;
    z-index: 999;
    transition: left var(--transition-normal);
    border-top: 1px solid var(--border-color);
  }
  
  header.scrolled .nav-menu {
    top: 64px;
    height: calc(100vh - 64px);
  }
  
  .nav-menu.open {
    left: 0;
  }
  
  .hamburger.open span:nth-child(1) {
    transform: translateY(7.5px) rotate(45deg);
  }
  
  .hamburger.open span:nth-child(2) {
    opacity: 0;
  }
  
  .hamburger.open span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
  
  .nav-actions {
    margin-right: 16px;
  }
  
  .growth-header {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .growth-legend {
    margin-top: 10px;
  }
  
  .contact-form-panel {
    padding: 30px 20px;
  }
  

}

@media (max-width: 480px) {
  .hero-content h1 {
    font-size: 2.25rem;
  }
  
  .stats-container {
    grid-template-columns: 1fr;
  }
  
  .hero-cta {
    flex-direction: column;
    width: 100%;
  }
  
  .btn {
    width: 100%;
  }
  

}

/* Custom Career Milestones Roadmap Buttons */
.milestone-year-btn {
  position: relative;
  z-index: 2;
  width: 46px;
  height: 46px;
  border-radius: var(--border-radius-full);
  background-color: var(--bg-card);
  border: 2px solid var(--border-color);
  color: var(--text-muted);
  font-weight: 700;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.milestone-year-btn:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
  transform: scale(1.08);
}

.milestone-year-btn.active {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
  color: white;
  box-shadow: 0 4px 12px var(--shadow-glow);
}

/* Career Milestones Grid Visualization */
.milestones-grid-container {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.milestone-grid-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  padding: 16px 18px;
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
  border-left: 4px solid var(--primary-color);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.milestone-grid-card:hover {
  transform: translateY(-2px);
  border-color: var(--primary-color);
  box-shadow: var(--shadow-md);
}

.milestone-grid-card.accent-card {
  border-left-color: var(--accent-color);
}

.milestone-grid-card.accent-card:hover {
  border-color: var(--accent-color);
}

@media (max-width: 768px) {
  .milestones-grid-container {
    grid-template-columns: 1fr;
  }

  /* Responsive overhaul for Sales & Milestones Section */
  .detailing-grid {
    gap: 32px !important;
  }

  #sales-visualizer-card, 
  .detailing-grid .contact-form-panel {
    padding: 24px 20px !important; /* Force override of inline 40px padding */
  }

  .company-tabs {
    gap: 6px !important;
    margin-bottom: 24px !important;
  }
  
  .company-tabs button.btn-secondary {
    padding: 8px 6px !important;
    font-size: 0.75rem !important;
  }

  .sales-chart-container {
    height: 180px !important; /* Scale down height on mobile */
  }

  #sales-label-before, 
  #sales-label-after {
    font-size: 0.7rem !important;
    line-height: 1.35 !important;
    margin-top: 8px !important;
  }

  #sales-val-before, 
  #sales-val-after {
    font-size: 0.95rem !important;
  }

  #sales-growth-container {
    bottom: 75px !important;
    padding: 6px 12px !important;
    font-size: 0.75rem !important;
  }
}

.company-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 40px;
}

.sales-chart-container {
  display: flex;
  justify-content: space-around;
  align-items: flex-end;
  height: 220px;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 20px;
  position: relative;
}

/* Invert transparent white Galderma logo in Light theme for perfect contrast without background boxes */
[data-theme="light"] img[src*="Galderma"] {
  filter: brightness(0) opacity(0.85);
}