/* CSS Variables */
:root {
  --font-main: 'Inter', 'Poppins', Arial, sans-serif;
  --color-bg: #f8f9fa;
  --color-primary: #00c6ff;
  --color-secondary: #007bff;
  --color-accent: #ffc107;
  --color-card: #fff;
  --color-shadow: 0 4px 24px rgba(0,0,0,0.07);
  --color-text: #232946;
  --spacing-section: 2rem;
  --spacing-card: 1.5rem;
}

/* Dark theme variables */
[data-theme='dark'] {
  --color-bg: #121212;
  --color-card: #1e1e2e;
  --color-text: #e4e6eb;
  --color-text-secondary: #b0b3b8;
  --color-shadow: 0 4px 24px rgba(0,0,0,0.2);
  --color-primary: #00c6ff;
  --color-secondary: #0d6efd;
  --color-accent: #ffd700;
  --color-border: #2d2d3d;
}
body {
  font-family: var(--font-main);
  background: linear-gradient(135deg, #e0e7ff 0%, var(--color-bg) 100%);
  color: var(--color-text);
  scroll-behavior: smooth;
  min-height: 100vh;
}
.section-wrapper {
  opacity: 0;
  transform: translateY(40px) scale(0.98);
  transition: opacity 0.8s cubic-bezier(0.4,0,0.2,1), transform 0.8s cubic-bezier(0.4,0,0.2,1);
  margin-bottom: var(--spacing-section);
}
.section-wrapper.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}
.progress.animate-bar {
  height: 1.5rem;
  background: rgba(255,255,255,0.15);
  border-radius: 1rem;
  overflow: hidden;
  margin-bottom: 1.5rem;
  box-shadow: 0 4px 12px rgba(0, 198, 255, 0.15);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.2);
  padding: 2px;
}
body.dark-mode .progress.animate-bar {
  background: rgba(44,44,64,0.7);
}
.progress.animate-bar .progress-bar {
    width: 0;
    transition: width 2.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
    overflow: hidden;
    will-change: width;
    border-radius: 0.75rem;
    background-image: linear-gradient(
        45deg, 
        rgba(255,255,255,0.15) 25%, 
        transparent 25%, 
        transparent 50%, 
        rgba(255,255,255,0.15) 50%, 
        rgba(255,255,255,0.15) 75%, 
        transparent 75%, 
        transparent
    );
    background-size: 1rem 1rem;
    animation: progress-stripes 1s linear infinite;
}

.progress.animate-bar .progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        rgba(255,255,255,0) 0%,
        rgba(255,255,255,0.3) 50%,
        rgba(255,255,255,0) 100%
    );
    animation: shimmer 2.5s infinite;
    filter: blur(4px);
}
@keyframes shimmer {
    0% {
        transform: translateX(-150%) skewX(-45deg);
    }
    100% {
        transform: translateX(150%) skewX(-45deg);
    }
}

@keyframes progress-stripes {
    0% {
        background-position: 0 0;
    }
    100% {
        background-position: 1rem 0;
    }
}
[data-theme='dark'] .progress.animate-bar .progress-bar::after {
    background: linear-gradient(
        90deg,
        rgba(255,255,255,0) 0%,
        rgba(255,255,255,0.1) 50%,
        rgba(255,255,255,0) 100%
    );
}
.progress-bar {
  font-weight: 600;
  font-size: 1rem;
  transition: width 4s cubic-bezier(0.4,0,0.2,1);
  box-shadow: 0 2px 8px #00c6ff22;
}
body.dark-mode .progress-bar {
  color: #232946;
}
label {
  font-weight: 500;
  margin-bottom: 0.3rem;
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-size: 1.15rem;
}
body.dark-mode label {
  color: #f4f4f4 !important;
}
.skill-icon {
  font-size: 2rem;
  background: linear-gradient(135deg, #fff 60%, #e0e7ff 100%);
  border-radius: 0.7rem;
  box-shadow: 0 2px 8px #00c6ff22, 0 1px 4px #007bff11;
  padding: 0.25rem 0.6rem;
  margin-right: 0.7rem;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 2.3rem;
  min-height: 2.3rem;
}
nav .nav-link,
nav .nav-link:focus,
nav .nav-link:active,
nav .nav-link.active,
nav .nav-link:hover,
.navbar-nav .nav-link,
.navbar-nav .nav-link:focus,
.navbar-nav .nav-link:active,
.navbar-nav .nav-link.active,
.navbar-nav .nav-link:hover,
.nav-underline,
.nav-underline:focus,
.nav-underline:active,
.nav-underline.active,
.nav-underline:hover {
  color: inherit !important;
  text-decoration: none !important;
  box-shadow: none !important;
}
body.dark-mode .navbar.glass {
  background: rgba(30, 30, 40, 0.95) !important;
  box-shadow: 0 8px 32px 0 rgba(0,0,0,0.35);
}
body.dark-mode .navbar .navbar-brand i {
  color: #ffc107;
  filter: drop-shadow(0 2px 8px #ffc10788);
}
body.dark-mode .navbar-nav .nav-link,
body.dark-mode .navbar-nav .nav-link.active {
  color: #f4f4f4 !important;
}
body.dark-mode .navbar-nav .nav-link:focus {
    outline: none;
    box-shadow: none;
    background: none !important;
}
/* 3D/Glassmorphism for cards and sections */
.glass-card, .glass-form, .card-3d {
  background: rgba(255,255,255,0.18);
  box-shadow: var(--color-shadow);
  backdrop-filter: blur(8px);
  border-radius: 1.5rem;
  border: 1px solid rgba(255,255,255,0.18);
  margin-bottom: var(--spacing-card);
}
body.dark-mode .glass-card, body.dark-mode .glass-form, body.dark-mode .card-3d {
  background: rgba(30, 30, 40, 0.85) !important;
  color: var(--color-text-dark);
  box-shadow: var(--color-shadow-dark);
  border: 1px solid rgba(255,255,255,0.08);
}
.section-3d {
  position: relative;
  overflow: hidden;
}
.floating-shape {
  position: absolute;
  border-radius: 50%;
  opacity: 0.5 !important;
  z-index: 10 !important;
  border: 2px solid #ff0000 !important;
  animation: float 8s ease-in-out infinite;
}
.floating-shape.shape1 { width: 180px; height: 180px; background: #00c6ff; top: -60px; left: -60px; }
.floating-shape.shape2 { width: 120px; height: 120px; background: #ffc107; bottom: -40px; right: 10%; animation-delay: 2s;}
.floating-shape.shape3 { width: 90px; height: 90px; background: #007bff; top: 30%; right: -40px; animation-delay: 4s;}
@keyframes float {
  0%, 100% { transform: translateY(0) scale(1);}
  50% { transform: translateY(-30px) scale(1.08);}
}
/* 3D Project Card Overlay */
.card-3d {
  background: rgba(255,255,255,0.22);
  box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.18);
  border-radius: 1.5rem;
  border: 1px solid rgba(255,255,255,0.18);
  overflow: hidden;
  position: relative;
  transition: transform 0.3s, box-shadow 0.3s;
}
body.dark-mode .card-3d {
    background: rgba(30, 30, 40, 0.85) !important;
    color: #f4f4f4;
    box-shadow: 0 8px 32px 0 rgba(0,0,0,0.35);
    border: 1px solid rgba(255,255,255,0.08);
}
.card-3d:hover {
  transform: translateY(-12px) scale(1.04) rotateX(3deg);
  box-shadow: 0 16px 48px 0 rgba(31, 38, 135, 0.22);
}
.card-3d .card-overlay {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(120deg, #00c6ff88 0%, #007bff88 100%);
  opacity: 0;
  transition: opacity 0.4s;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 1.2rem; font-weight: 600;
}
.card-3d:hover .card-overlay { opacity: 1; }
/* Glassy form */
.glass-form {
  background: rgba(255,255,255,0.22);
  box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.18);
  border-radius: 1.5rem;
  border: 1px solid rgba(255,255,255,0.18);
}
body.dark-mode .glass-form {
    background: rgba(30, 30, 46, 0.7);
    color: #f4f4f4;
    box-shadow: 0 8px 32px 0 rgba(0,0,0,0.35);
    border: 1px solid rgba(255,255,255,0.08);
}
/* Social icons in footer */
.footer-social a {
  color: #fff;
  margin: 0 0.5rem;
  font-size: 1.3rem;
  transition: color 0.2s, transform 0.2s;
}
body.dark-mode .footer-social a {
    color: #f4f4f4 !important;
}
.footer-social a:hover {
  color: var(--color-primary);
  transform: scale(1.2) rotate(-8deg);
}
body.dark-mode .footer-social a:hover {
    color: var(--color-accent) !important;
}
body.dark-mode .modal-content {
    background: rgba(30, 30, 40, 0.95) !important;
    color: #f4f4f4;
}
body.dark-mode input,
body.dark-mode textarea {
    background: #232946;
    color: #f4f4f4;
    border-color: #444;
}
body.dark-mode input:focus,
body.dark-mode textarea:focus {
    border-color: #ffc107;
    box-shadow: 0 0 0 0.2rem rgba(255,193,7,.15);
}

.section-title {
  font-weight: 700;
  margin-bottom: 2rem;
  letter-spacing: 0.5px;
}
blockquote {
  font-size: 1.1rem;
  font-style: italic;
  color: var(--color-secondary);
}
.blockquote-footer {
  color: var(--color-accent);
  font-size: 0.95rem;
}
.resume-btn {
  margin-top: 1.5rem;
  font-size: 1.1rem;
}
input, textarea {
  font-family: var(--font-main);
}
/* 3D Animated Profile Image Box */
.profile-img-animated-box {
  padding: 14px;
  border-radius: 50%;
  background: conic-gradient(
    from 0deg,
    #00c6ff 0%,
    #007bff 25%,
    #ffc107 50%,
    #ff5e62 75%,
    #00c6ff 100%
  );
  background-size: 200% 200%;
  animation: animated-border-3d 3.5s linear infinite, rotate-3d 8s linear infinite;
  box-shadow: 0 8px 32px 0 rgba(0,198,255,0.18), 0 2px 8px #ffc10755, 0 0 32px 0 #007bff33;
  position: relative;
  transition: transform 0.3s cubic-bezier(0.4,0,0.2,1), box-shadow 0.3s;
}
.profile-img-animated-box:hover {
  transform: scale(1.06) rotateZ(-2deg) perspective(400px) rotateY(8deg);
  box-shadow: 0 16px 48px 0 #00c6ff44, 0 4px 16px #ffc10777, 0 0 48px 0 #007bff55;
}
@keyframes animated-border-3d {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}
@keyframes rotate-3d {
  0% {
    filter: drop-shadow(0 0 0 #00c6ff);
  }
  50% {
    filter: drop-shadow(0 0 16px #ffc107);
  }
  100% {
    filter: drop-shadow(0 0 0 #00c6ff);
  }
}
/* --- NAVBAR UNDERLINE: Only allow color change for .nav-underline.active or .nav-underline:focus, no underline --- */
.nav-underline {
  position: relative;
}
.nav-underline::after {
  display: none !important;
}
.nav-underline.active,
.nav-underline:focus {
  color: #007bff !important;
  background: rgba(0, 123, 255, 0.10) !important;
  border-radius: 0.4em;
  transition: background 0.2s, color 0.2s;
}
/* Remove any other ::after underline rules for nav-link or navbar-nav .nav-link below this line! */
/* 2. 3D tilt/zoom hover effect for project cards */
.project-card {
  transition: transform 0.3s cubic-bezier(.25,.8,.25,1), box-shadow 0.3s;
  will-change: transform;
}
.project-card:hover {
  transform: perspective(600px) rotateY(3deg) scale(1.04);
  box-shadow: 0 12px 36px rgba(0,0,0,0.18);
  z-index: 2;
}
/* 3. Tech stack badges */
.badge {
  font-size: 0.85rem;
  padding: 0.4em 0.7em;
  border-radius: 0.7em;
  font-weight: 600;
  letter-spacing: 0.03em;
  margin-bottom: 0.2em;
}
/* 4. Hero profile image overlap */
.hero-profile-img-wrapper {
  z-index: 10;
  box-shadow: 0 8px 32px rgba(0,0,0,0.18);
}
body[data-theme='dark'] .hero-profile-img-wrapper {
  filter: brightness(0.9);
}
/* 5. Button and card hover microinteractions */
.btn, .card {
  transition: box-shadow 0.2s, transform 0.2s;
}
.btn:hover, .btn:focus {
  box-shadow: 0 4px 16px rgba(0,123,255,0.18);
  transform: translateY(-2px) scale(1.03);
}
/* 6. Consistent spacing and modern font usage */
body, html {
  font-family: 'Inter', 'Poppins', Arial, sans-serif;
  letter-spacing: 0.01em;
  line-height: 1.6;
}
.section-title {
  margin-bottom: 2.5rem;
  font-size: 2.2rem;
}
/* 7. Scrollspy active link highlighting */
.nav-underline.active, .nav-underline:focus {
  color: #007bff !important;
}
.social-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 2px 8px #00c6ff22;
  font-size: 1.7rem;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
  border: 2px solid #e0e7ff;
}
.social-icon.text-primary { color: #1877f3; background: #e7f0fd; border-color: #b6d4fe; }
.social-icon.text-danger { color: #e4405f; background: #fde7ed; border-color: #f8bbd0; }
.social-icon.text-dark { color: #000; background: #f0f0f0; border-color: #bbb; }
body.dark-mode .social-icon {
  color: var(--color-text) !important;
}
.social-icon:hover {
  transform: scale(1.15) rotate(-6deg);
  box-shadow: 0 4px 16px #00c6ff44;
  background: #fffbe7;
}
.home-tall {
  min-height: 70vh;
}
.navbar.glass {
  background: #f8f9fa !important;
  /* If you want a semi-transparent effect, use: background: rgba(248,249,250,0.97) !important; */
  backdrop-filter: blur(12px);
  box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.08);
  border-bottom: 1px solid rgba(0,0,0,0.04);
}

/* Dark theme styles */
[data-theme='dark'] body {
  background: linear-gradient(135deg, #1a1a2e 0%, var(--color-bg) 100%);
  color: var(--color-text);
}

[data-theme='dark'] .card {
  background-color: var(--color-card);
  border-color: var(--color-border);
}

[data-theme='dark'] .bg-light {
  background-color: #1a1a2e !important;
}

[data-theme='dark'] .bg-white {
  background-color: #121212 !important;
}

[data-theme='dark'] .glass-card {
  background: rgba(30, 30, 46, 0.8);
  backdrop-filter: blur(10px);
  border: 1px solid var(--color-border);
}

[data-theme='dark'] .section-title {
  color: var(--color-text);
}

[data-theme='dark'] .navbar.glass {
  background: rgba(18, 18, 24, 0.95) !important;
  border-bottom: 1px solid var(--color-border);
}

[data-theme='dark'] .nav-link {
  color: var(--color-text) !important;
}

[data-theme='dark'] .form-control {
  background-color: rgba(30, 30, 46, 0.8);
  border-color: var(--color-border);
  color: var(--color-text);
}

[data-theme='dark'] .form-control:focus {
  background-color: rgba(30, 30, 46, 0.9);
  border-color: var(--color-primary);
  color: var(--color-text);
}

[data-theme='dark'] .modal-content {
  background-color: var(--color-card);
  border-color: var(--color-border);
}

[data-theme='dark'] .blockquote {
  color: var(--color-text-secondary);
}

[data-theme='dark'] .card-title {
  color: var(--color-text);
}

[data-theme='dark'] .card-text {
  color: var(--color-text-secondary);
}

[data-theme='dark'] .badge {
  opacity: 0.9;
}

[data-theme='dark'] #scrollToTop {
  background: var(--color-card);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

[data-theme='dark'] .skill-icon {
  background: var(--color-card);
  border: 1px solid var(--color-border);
}

[data-theme='dark'] .progress.animate-bar {
  background: rgba(30, 30, 46, 0.5);
}

[data-theme='dark'] .glass-form {
  background: rgba(30, 30, 46, 0.7);
  border: 1px solid var(--color-border);
}

[data-theme='dark'] .form-label {
  color: var(--color-text);
}

[data-theme='dark'] .alert {
  background-color: var(--color-card);
  border-color: var(--color-border);
  color: var(--color-text);
}

[data-theme='dark'] .btn-outline-primary {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

[data-theme='dark'] .btn-outline-primary:hover {
  background-color: var(--color-primary);
  color: #000;
}

/* Improved background gradients for dark theme */
[data-theme='dark'] .section-wrapper:nth-child(odd) {
  background: linear-gradient(135deg, #1a1a2e 0%, #121212 100%);
}

[data-theme='dark'] .section-wrapper:nth-child(even) {
  background: linear-gradient(135deg, #121212 0%, #1a1a2e 100%);
}

/* Dark theme transitions */
body {
  transition: background-color 0.3s ease, color 0.3s ease;
}

.card, .glass-card, .navbar, .form-control, .modal-content {
  transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

/* Theme transition styles */
.theme-transition,
.theme-transition *,
.theme-transition *:before,
.theme-transition *:after {
    transition: all 0.3s ease-in-out !important;
}

#themeToggle {
    padding: 0.4rem 0.6rem;
    border-radius: 50%;
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s ease;
}

#themeToggle i {
    transition: transform 0.3s ease;
}

[data-theme='dark'] #themeToggle {
    background: var(--color-card);
    border-color: var(--color-border);
    color: var(--color-accent);
}

[data-theme='dark'] #themeToggle:hover {
    background: var(--color-card);
    border-color: var(--color-accent);
    color: var(--color-accent);
    transform: scale(1.1);
}

[data-theme='dark'] .navbar-brand {
    color: var(--color-text) !important;
}

[data-theme='dark'] .navbar-brand i {
    color: var(--color-primary);
}

[data-theme='dark'] .navbar-toggler {
    border-color: rgba(255, 255, 255, 0.1);
}

[data-theme='dark'] .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 0.75%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Enhanced glassmorphism effects */
.glass-card {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 8px 32px rgba(31, 38, 135, 0.15);
}

[data-theme='dark'] .glass-card {
  background: rgba(30, 30, 46, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Enhanced card hover effects */
.project-card {
  transform-style: preserve-3d;
  perspective: 1000px;
}

.project-card:hover {
  transform: translateY(-10px) rotateX(3deg) rotateY(3deg);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
}

/* Animated background shapes */
.floating-shape {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  z-index: 0;
  animation: float 20s infinite;
  opacity: 0.5;
}

.shape1 {
  width: 400px;
  height: 400px;
  background: linear-gradient(45deg, var(--color-primary), var(--color-secondary));
  top: -100px;
  left: -100px;
  animation-delay: 0s;
}

.shape2 {
  width: 300px;
  height: 300px;
  background: linear-gradient(45deg, var(--color-accent), var(--color-primary));
  bottom: -50px;
  right: -50px;
  animation-delay: -5s;
}

.shape3 {
  width: 200px;
  height: 200px;
  background: linear-gradient(45deg, var(--color-secondary), var(--color-accent));
  top: 50%;
  left: 50%;
  animation-delay: -10s;
}

@keyframes float {
  0%, 100% {
    transform: translate(0, 0) rotate(0deg);
  }
  25% {
    transform: translate(50px, 50px) rotate(90deg);
  }
  50% {
    transform: translate(0, 100px) rotate(180deg);
  }
  75% {
    transform: translate(-50px, 50px) rotate(270deg);
  }
}

/* Skill icons enhancement */
.skill-icon {
  background: linear-gradient(135deg, rgba(255,255,255,0.1), rgba(255,255,255,0.05));
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255,255,255,0.2);
  transition: all 0.3s ease;
}

.skill-icon:hover {
  transform: scale(1.1);
  box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

/* Social icons enhancement */
.social-icon {
  font-size: 1.5rem;
  transition: all 0.3s ease;
  padding: 0.5rem;
  border-radius: 50%;
}

.social-icon:hover {
  transform: translateY(-5px) scale(1.1);
  filter: brightness(1.2);
}

/* Button animations */
.btn {
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255,255,255,0.2);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.6s ease, height 0.6s ease;
}

.btn:hover::after {
  width: 200%;
  height: 200%;
}

/* Profile image animation */
.profile-img-animated-box img {
  transition: all 0.5s ease;
  filter: brightness(1) contrast(1);
}

.profile-img-animated-box:hover img {
  transform: scale(1.05);
  filter: brightness(1.1) contrast(1.1);
  box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}

/* Section transitions */
.section-wrapper {
  position: relative;
  z-index: 1;
}

/* Scroll Progress Indicator */
.scroll-progress-container {
  position: absolute;
  width: 100%;
  height: 3px;
  background: rgba(255,255,255,0.1);
  bottom: 0;
  left: 0;
  z-index: 1000;
  pointer-events: none;
}

.scroll-progress {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  width: 0%;
  transition: width 0.15s ease-out;
  will-change: width;
  transform: translateZ(0);
}

[data-theme='dark'] .scroll-progress-container {
  background: rgba(0,0,0,0.2);
}