/* ========================================
   CSS VARIABLES - COLOR PALETTE
======================================== */

:root {
 /* PREMIUM COLORS - Inspired by Google & Apple */
  /* --primary-color: #4285F4;        /* Google Blue */
  --secondary-color: #34A853;      /* Google Green */
  --accent-color: #EA4335;         /* Google Red */
  --warning-color: #FBBC04;        /* Google Yellow */
  --purple-accent: #9C27B0;        /* Material Purple */
  --apple-blue: #007AFF;           /* Apple System Blue */
  --apple-mint: #00C896;           /* Apple Mint */
  --apple-orange: #FF9500;         /* Apple Orange */
  
  /* NEUTRAL PREMIUM TONES */
  --dark-bg: #0A0A0B;              /* Rich Black */
  --dark-surface: #1C1C1E;         /* Apple Dark Surface */
  --card-bg: #2C2C2E;              /* Apple Card Background */
  --border-color: #38383A;         /* Apple Border */
  
  /* TEXT COLORS */
  --text-primary: #FFFFFF;         /* Pure White */
  --text-secondary: #EBEBF5;       /* Apple Secondary Text */
  --text-tertiary: #EBEBF599;      /* Apple Tertiary Text */
  --text-dark: #1D1D1F;            /* Apple Dark Text */
  
  /* PREMIUM GRADIENTS */
  --gradient-primary: linear-gradient(135deg, #4285F4 0%, #9C27B0 100%);
  --gradient-accent: linear-gradient(135deg, #EA4335 0%, #FBBC04 100%);
  --gradient-success: linear-gradient(135deg, #34A853 0%, #00C896 100%);
  --gradient-apple: linear-gradient(135deg, #007AFF 0%, #5856D6 100%);
  --gradient-hero: linear-gradient(135deg, #4285F4 0%, #9C27B0 50%, #EA4335 100%);
  
  /* PREMIUM SHADOWS */
  --shadow-soft: 0 4px 20px rgba(66, 133, 244, 0.15);
  --shadow-medium: 0 8px 32px rgba(66, 133, 244, 0.2);
  --shadow-strong: 0 16px 48px rgba(66, 133, 244, 0.25);
  --shadow-card: 0 2px 16px rgba(0, 0, 0, 0.2);
  --shadow-hover: 0 12px 40px rgba(66, 133, 244, 0.3);
   
  /* PREMIUM STYLING */
  --border-radius : 16px;
  --border-radius-small: 8px;
  --border-radius-large: 24px;
  --transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-fast: all 0.2s ease;
  
  /* GLASS EFFECT */
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
  --backdrop-blur: blur(20px);
}

/* ========================================
   GLOBAL STYLES
======================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}


body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--dark-bg);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ========================================
   NAVIGATION
======================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(10, 10, 11, 0.8);
  backdrop-filter: var(--backdrop-blur);
  border-bottom: 1px solid var(--glass-border);
  z-index: 1000;
  transition: var(--transition);
  box-shadow: var(--shadow-soft);
}


.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 20px;
  max-width: 1400px;
  margin: 0 auto;
}

.nav-logo .logo-text {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', sans-serif;
  font-size: 28px;
  font-weight: 700;
  background: var(--gradient-hero);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.5px;
}

.nav-menu {
  display: flex;
  gap: 40px;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  position: relative;
  transition: var(--transition);
  font-size: 16px;
}

.nav-link:hover {
  color: var(--primary-color);
  transform: translateY(-2px);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width 0.3s ease;
}

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

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background: var(--primary-color);
  margin: 3px 0;
  transition: var(--transition);
  border-radius: 2px;
}

/* ========================================
   LANDING SECTION
======================================== */
.landing-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding: 120px 0;
  background: radial-gradient(ellipse at center, rgba(66, 133, 244, 0.08) 0%, rgba(156, 39, 176, 0.04) 50%, transparent 80%);
  overflow: hidden;
}

.landing-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-text {
  padding-left: 40px;
}


.glitch-text h1 {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', sans-serif;
  font-size: clamp(48px, 6vw, 84px);
  font-weight: 800;
  line-height: 1.05;
  background: var(--gradient-hero);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  position: relative;
  letter-spacing: -2px;
}

@keyframes glow {
  from {
    text-shadow: 0 0 20px rgba(158, 202, 214, 0.5), 0 0 30px rgba(158, 202, 214, 0.3);
  }
  to {
    text-shadow: 0 0 30px rgba(158, 202, 214, 0.8), 0 0 40px rgba(158, 202, 214, 0.5);
  }
}

.glitch-text::before,
.glitch-text::after {
  content: attr(data-text);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0.8;
}

.glitch-text::before {
  animation: glitch-1 2s infinite;
  color: var(--accent-color);
  z-index: -1;
}

.glitch-text::after {
  animation: glitch-2 2s infinite;
  color: var(--apple-blue);
  z-index: -2;
}

@keyframes glitch-1 {
  0%, 14%, 15%, 49%, 50%, 99%, 100% {
    transform: translate(0);
  }
  15%, 49% {
    transform: translate(-2px, 2px);
  }
}

@keyframes glitch-2 {
  0%, 20%, 21%, 62%, 63%, 99%, 100% {
    transform: translate(0);
  }
  21%, 62% {
    transform: translate(2px, -1px);
  }
}

.subtitle {
  margin: 30px 0;
  font-size: 28px;
  font-weight: 400;
  color: var(--text-secondary);
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', sans-serif;
  letter-spacing: -0.5px;
}

.typing-text {
  display: inline-block;
  min-width: 300px;
}

.cursor {
  animation: blink 1s infinite;
  color: var(--accent-color);
}

@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

.hero-description {
  font-size: 18px;
  line-height: 1.8;
  color: var(--text-secondary);
  margin: 40px 0;
  max-width: 500px;
}

.cta-buttons {
  display: flex;
  gap: 20px;
  margin-top: 50px;
}

.btn-primary, .btn-secondary {
  padding: 18px 36px;
  border: none;
  border-radius: var(--border-radius);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 12px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', sans-serif;
  letter-spacing: -0.2px;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow-medium);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: var(--shadow-hover);
}

.btn-secondary {
  background: var(--glass-bg);
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--backdrop-blur);
}

.btn-secondary:hover {
  background: rgba(66, 133, 244, 0.1);
  border-color: var(--primary-color);
  transform: translateY(-3px);
}

/* Hero Visual / Spline Container */
.hero-visual {
  height: 600px;
  position: relative;
}

.spline-container {
  width: 100%;
  height: 100%;
  border-radius: var(--border-radius-large);
  overflow: hidden;
  position: relative;
  background: var(--glass-bg);
  box-shadow: var(--shadow-strong);
  backdrop-filter: var(--backdrop-blur);
  border: 1px solid var(--glass-border);
}

.spline-container spline-viewer {
  width: 100%;
  height: 100%;
  border-radius: var(--border-radius);
}

/* Interactive bot badge positioned just above the spline container's top-right corner */
.interactive-bot {
  position: absolute;
  top: 14px;
  right: 14px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.03));
  color: var(--text-secondary);
  padding: 8px 12px;
  border-radius: 12px;
  font-size: 13px;
  font-weight: 600;
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: 0 6px 18px rgba(0,0,0,0.45);
  backdrop-filter: blur(8px);
  z-index: 5;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, opacity 0.18s ease;
}

.interactive-bot i {
  color: var(--primary-color);
  font-size: 14px;
}

.interactive-bot:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 14px 30px rgba(0,0,0,0.5);
  color: var(--text-primary);
}

@media (max-width: 768px) {
  .interactive-bot {
    top: 10px;
    right: 10px;
    padding: 6px 10px;
    font-size: 12px;
  }
}

/* Floating Particles Animation */
.floating-particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.floating-particles::before,
.floating-particles::after {
  content: '';
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--primary-color);
  border-radius: 50%;
  animation: float 6s ease-in-out infinite;
  box-shadow: 0 0 10px var(--primary-color);
}

.floating-particles::before {
  top: 20%;
  left: 10%;
  animation-delay: 0s;
}

.floating-particles::after {
  top: 70%;
  right: 20%;
  animation-delay: 3s;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-20px); }
}

.geometric-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    linear-gradient(45deg, transparent 40%, rgba(158, 202, 214, 0.02) 50%, transparent 60%),
    linear-gradient(-45deg, transparent 40%, rgba(116, 141, 174, 0.02) 50%, transparent 60%);
  pointer-events: none;
}

/* ========================================
   SECTIONS COMMON STYLES
======================================== */
.section-header {
  text-align: center;
  margin-bottom: 80px;
}

.section-title {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', sans-serif;
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 700;
  background: var(--gradient-hero);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 20px;
  letter-spacing: -1px;
}

.section-line {
  width: 100px;
  height: 4px;
  background: var(--gradient-primary);
  margin: 0 auto;
  border-radius: 2px;
}

/* ========================================
   ABOUT SECTION
======================================== */
.about-section {
  padding: 120px 0;
  background: linear-gradient(135deg, var(--dark-surface) 0%, var(--dark-bg) 100%);
}

.about-content {
  display: grid;
  grid-template-columns: 400px 1fr;
  gap: 80px;
  align-items: center;
}

.about-image {
  position: relative;
}

.image-container {
  position: relative;
  width: 350px;
  height: 350px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--gradient-primary);
  padding: 4px;
  margin: 0 auto;
}

.profile-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  border: 4px solid var(--dark-bg);
}

.image-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(158, 202, 214, 0.1);
  border-radius: 50%;
  transition: var(--transition);
}

.image-container:hover .image-overlay {
  background: rgba(158, 202, 214, 0.2);
}

.hologram-effect {
  position: absolute;
  top: -20px;
  left: -20px;
  right: -20px;
  bottom: -20px;
  border: 2px solid var(--primary-color);
  border-radius: 50%;
  opacity: 0.3;
  animation: hologram 3s linear infinite;
}

@keyframes hologram {
  0%, 100% { transform: rotate(0deg) scale(1); opacity: 0.3; }
  50% { transform: rotate(180deg) scale(1.05); opacity: 0.6; }
}

.about-text {
  padding-left: 40px;
}

.about-title {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', sans-serif;
  font-size: 32px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 30px;
  letter-spacing: -0.5px;
}

.about-description {
  font-size: 18px;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 25px;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 40px;
}

.skill-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 24px;
  background: var(--glass-bg);
  border-radius: var(--border-radius);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--backdrop-blur);
  transition: var(--transition);
}

.skill-item:hover {
  background: rgba(66, 133, 244, 0.1);
  border-color: var(--primary-color);
  transform: translateY(-3px);
  box-shadow: var(--shadow-soft);
}

.skill-item i {
  font-size: 24px;
  color: var(--primary-color);
}

/* ========================================
   EDUCATION SECTION
======================================== */
.education-section {
  padding: 120px 0;
  background: var(--dark-bg);
}

.timeline {
  position: relative;
  max-width: 1000px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--gradient-primary);
  transform: translateX(-50%);
  border-radius: 2px;
}

.timeline-item {
  position: relative;
  width: 50%;
  padding: 40px;
  margin-bottom: 40px;
}

.timeline-item:nth-child(odd) {
  left: 0;
  padding-right: 60px;
  text-align: right;
}

.timeline-item:nth-child(even) {
  left: 50%;
  padding-left: 60px;
  text-align: left;
}

.timeline-dot {
  position: absolute;
  width: 20px;
  height: 20px;
  background: var(--primary-color);
  border-radius: 50%;
  top: 50%;
  transform: translateY(-50%);
  box-shadow: 0 0 20px rgba(158, 202, 214, 0.5);
  z-index: 2;
}

.timeline-item:nth-child(odd) .timeline-dot {
  right: -50px;
}

.timeline-item:nth-child(even) .timeline-dot {
  left: -50px;
}

.timeline-content {
  background: rgba(26, 26, 46, 0.8);
  padding: 30px;
  border-radius: var(--border-radius);
  border: 1px solid rgba(158, 202, 214, 0.2);
  backdrop-filter: blur(20px);
  box-shadow: var(--box-shadow);
  position: relative;
  transition: var(--transition);
}

.timeline-content:hover {
  transform: translateY(-5px);
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.4);
}

.timeline-year {
  font-family: 'Orbitron', monospace;
  font-size: 14px;
  color: var(--accent-color);
  font-weight: 600;
  margin-bottom: 10px;
  letter-spacing: 1px;
}

.timeline-title {
  font-size: 24px;
  color: var(--primary-color);
  margin-bottom: 8px;
  font-weight: 700;
}

.timeline-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 15px;
  font-weight: 500;
}

.timeline-description {
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.timeline-achievements {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.achievement {
  background: var(--gradient-primary);
  color: white;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ========================================
   PROJECTS SECTION
======================================== */
.projects-section {
  padding: 120px 0;
  background: linear-gradient(135deg, rgba(26, 26, 46, 0.3) 0%, rgba(10, 10, 15, 0.9) 100%);
}

.subsection-title {
  font-family: 'Orbitron', monospace;
  font-size: 28px;
  color: var(--primary-color);
  text-align: center;
  margin-bottom: 50px;
}

.certificates-container {
  margin-bottom: 80px;
}

.certificates-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-bottom: 40px;
}

.card {
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.card:hover {
  transform: translateY(-6px) scale(1.02);
  box-shadow: 0 15px 40px rgba(0,0,0,0.25), 0 0 20px var(--accent-color);
}


.certificate-card {
  background: rgba(26, 26, 46, 0.8);
  padding: 40px 20px;
  border-radius: var(--border-radius);
  text-align: center;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(158, 202, 214, 0.2);
  backdrop-filter: blur(20px);
  transition: var(--transition);
}

.certificate-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.4);
}

.card-glow {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-primary);
  opacity: 0;
  transition: var(--transition);
  border-radius: var(--border-radius);
}

.certificate-card:hover .card-glow {
  opacity: 0.1;
}

.certificate-icon {
  font-size: 48px;
  color: var(--primary-color);
  margin-bottom: 20px;
  position: relative;
  z-index: 2;
}

.certificate-card h4 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text-primary);
  position: relative;
  z-index: 2;
}

.certificate-card p {
  color: var(--text-secondary);
  margin-bottom: 15px;
  position: relative;
  z-index: 2;
}

.certificate-year {
  background: var(--accent-color);
  color: var(--dark-bg);
  padding: 6px 12px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 700;
  display: inline-block;
  position: relative;
  z-index: 2;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 40px;
}

.project-card {
  background: rgba(26, 26, 46, 0.8);
  border-radius: var(--border-radius);
  overflow: hidden;
  border: 1px solid rgba(158, 202, 214, 0.2);
  backdrop-filter: blur(20px);
  transition: var(--transition);
}

.project-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.4);
}

.project-image {
  height: 400px;
   width: 450px;
  background: var(--gradient-primary);
  position: relative;
  overflow: hidden;
}

.project-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition);
}
.project-image:hover .project-overlay {
  opacity: 1;
}

.project-links {
  position: absolute;
  left: 42%;
  top: 50%;
  transform: translate(-50%, -50%); /* exact center */
  display: flex;
  gap: 20px;           /* keeps space if you add more icons */
  align-items: center;
  justify-content: center;
  margin: 0;
  padding: 0;
}

.project-link {
  width: 50px;
  height: 50px;
  background: var(--primary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  text-decoration: none;
  transition: var(--transition);
}

.project-link:hover {
  background: var(--accent-color);
  transform: scale(1.1);
}

.project-info {
  padding: 30px;
}

.project-title {
  font-size: 22px;
  color: var(--primary-color);
  margin-bottom: 15px;
  font-weight: 600;
}

.project-description {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.project-tech span {
  background: rgba(158, 202, 214, 0.2);
  color: var(--primary-color);
  padding: 6px 12px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 500;
}

/* ========================================
   CONTACT SECTION
======================================== */
.contact-section {
  padding: 120px 0;
  background: var(--dark-bg);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.contact-title {
  font-family: 'Orbitron', monospace;
  font-size: 32px;
  color: var(--primary-color);
  margin-bottom: 20px;
}

.contact-description {
  font-size: 18px;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 40px;
}

.contact-details {
  margin-bottom: 40px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-bottom: 20px;
  font-size: 16px;
  color: var(--text-secondary);
}

.contact-item i {
  color: var(--primary-color);
  font-size: 18px;
  width: 20px;
}

.social-links {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.social-link {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 15px 20px;
  background: rgba(158, 202, 214, 0.1);
  border-radius: 12px;
  text-decoration: none;
  color: var(--text-secondary);
  border: 1px solid rgba(158, 202, 214, 0.2);
  transition: var(--transition);
  font-weight: 500;
}

.social-link:hover {
  background: rgba(158, 202, 214, 0.2);
  color: var(--primary-color);
  transform: translateX(10px);
}

.social-link i {
  font-size: 20px;
  color: var(--primary-color);
}

.resume-download {
  background: var(--gradient-primary);
  color: white;
}

.resume-download:hover {
  color: white;
  transform: translateX(10px) scale(1.05);
}

/* Contact Form */
.form {
  background: rgba(26, 26, 46, 0.8);
  padding: 40px;
  border-radius: var(--border-radius);
  border: 1px solid rgba(158, 202, 214, 0.2);
  backdrop-filter: blur(20px);
}

.form-group {
  position: relative;
  margin-bottom: 30px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 15px 0;
  background: transparent;
  border: none;
  border-bottom: 2px solid rgba(158, 202, 214, 0.3);
  color: var(--text-primary);
  font-size: 16px;
  transition: var(--transition);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-bottom-color: var(--primary-color);
}

.form-group label {
  position: absolute;
  top: 15px;
  left: 0;
  color: var(--text-secondary);
  pointer-events: none;
  transition: var(--transition);
}

.form-group input:focus ~ label,
.form-group input:valid ~ label,
.form-group textarea:focus ~ label,
.form-group textarea:valid ~ label {
  top: -10px;
  font-size: 12px;
  color: var(--primary-color);
  font-weight: 600;
}

.form-line {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: var(--transition);
}

.form-group input:focus ~ .form-line,
.form-group textarea:focus ~ .form-line {
  width: 100%;
}

.btn {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  border: 2px solid transparent;
  border-image: var(--gradient-primary) 1;
}

.btn-submit {
  width: 100%;
  padding: 16px 32px;
  background: var(--gradient-primary);
  color: white;
  border: none;
  border-radius: 50px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  transition: var(--transition);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 40px rgba(158, 202, 214, 0.4);
}

/* ========================================
   FOOTER
======================================== */
.footer {
  background: rgba(26, 26, 46, 0.8);
  padding: 40px 0;
  border-top: 1px solid rgba(158, 202, 214, 0.2);
  backdrop-filter: blur(20px);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  text-align: center;
  color: var(--text-secondary);
}

.footer-links {
  display: flex;
  gap: 30px;
}

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

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

/* ========================================
   RESPONSIVE DESIGN
======================================== */
@media (max-width: 1200px) {
  .landing-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 60px;
  }
  
  .hero-text {
    padding-left: 0;
  }
  
  .hero-visual {
    height: 500px;
  }
  
  .about-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 60px;
  }
  
  .about-text {
    padding-left: 0;
  }
  
  .contact-content {
    grid-template-columns: 1fr;
    gap: 60px;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }
  
  .hamburger {
    display: flex;
  }
  
  .landing-section {
    padding: 80px 0;
  }
  
  .hero-visual {
    height: 400px;
  }
  
  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .timeline::before {
    left: 20px;
  }
  
  .timeline-item {
    width: 100%;
    left: 0 !important;
    padding-left: 60px !important;
    padding-right: 20px !important;
    text-align: left !important;
  }
  
  .timeline-dot {
    left: 10px !important;
    right: auto !important;
  }
  
  .certificates-grid {
    grid-template-columns: 1fr;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .skills-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    flex-direction: column;
    gap: 20px;
  }
  
  .footer-links {
    gap: 20px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 15px;
  }
  
  .section-title {
    font-size: 32px;
  }
  
  .hero-visual {
    height: 300px;
  }
  
  .image-container {
    width: 280px;
    height: 280px;
  }
  
  .form {
    padding: 20px;
  }
}

/* ========================================
   LOADING ANIMATIONS
======================================== */
.fade-in {
  animation: fadeIn 0.6s ease-out forwards;
}

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

.slide-in-left {
  animation: slideInLeft 0.6s ease-out forwards;
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.slide-in-right {
  animation: slideInRight 0.6s ease-out forwards;
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* ========================================
   CUSTOM SCROLLBAR
======================================== */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--dark-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--gradient-primary);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-color);
}

/* ========================================
   SELECTION STYLING
======================================== */
::selection {
  background: var(--primary-color);
  color: white;
}

::-moz-selection {
  background: var(--primary-color);
  color: white;
}