:root {
  --primary: #1891e2;
  --secondary: #88d3ce;
  --dark: #19556d;
  --light: #f8f9fa;
  --accent: #ff7e5f;
  --bg-dark: #0d2d3a;
  --bg-light: #f0f8ff;
  --text-dark: #333;
  --text-light: #fff;
  --card-bg-dark: #052844;
  --card-bg-light: rgba(0, 0, 0, 0.03);
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Poppins', sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-light);
  overflow-x: hidden;
  transition: var(--transition);
  line-height: 1.6;
}

body[data-bs-theme="light"] {
  background-color: var(--bg-light);
  color: var(--text-dark);
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
  font-weight: 700;
  line-height: 1.2;
}

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

/* Utility Classes */
.text-primary { color: var(--primary) !important; }
.bg-primary { background-color: var(--primary) !important; }
.transition { transition: var(--transition); }
.h-100 { height: 100%; }
.flex-column { flex-direction: column; }
.justify-center { justify-content: center; }

/* Layout Components */
.container {
  width: 100%;
  padding-right: 15px;
  padding-left: 15px;
  margin-right: auto;
  margin-left: auto;
  max-width: 1140px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
}

@media (min-width: 576px) {
  .container { max-width: 540px; }
}
@media (min-width: 768px) {
  .container { max-width: 720px; }
}
@media (min-width: 992px) {
  .container { max-width: 960px; }
}
@media (min-width: 1200px) {
  .container { max-width: 1140px; }
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: right;
  /* background: linear-gradient(to right, #454f72f8, hsla(0, 15%, 94%, 0)); */
  overflow: hidden;
  isolation: isolate;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    linear-gradient(90deg, rgba(0, 0, 0, 0) 0%, rgba(0,0,0,220) 60%),
    url('https://images.pexels.com/photos/574071/pexels-photo-574071.jpeg') no-repeat right center;
  background-size: auto 100%, cover;
  opacity: 0.8;
  z-index: -1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 20px;
  color: var(--text-light);
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  background: linear-gradient(to right, #fff, #d1d1d1);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 1.5rem;
}

.typewriter {
  border-right: 3px solid var(--accent);
  animation: blink-caret 0.75s step-end infinite;
  display: inline-block;
  min-height: 1.5em;
}

@keyframes blink-caret {
  from, to { border-color: transparent }
  50% { border-color: var(--accent); }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 500;
  text-align: center;
  text-decoration: none;
  white-space: nowrap;
  vertical-align: middle;
  -webkit-user-select: none;
  user-select: none;
  border: 2px solid transparent;
  padding: 0.75rem 1.5rem;
  border-radius: 15px;
  transition: var(--transition);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.btn-primary {
  background-color: transparent;
  border-color: var(--primary);
  color: white;
}

.btn-primary:hover {
  background-color: #1478c0;
  transform: translateY(-2px);
}

.btn-outline-light {
  color: white;
  border-color: rgba(255, 255, 255, 0.5);
  background-color: transparent;
}

.btn-outline-light:hover {
  background-color: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

/* Section Styles */
.section {
  padding: 5rem 0;
  background: var(--bg-dark); 
  color: var(--text-light);
  position: relative;
  overflow: hidden;
}

.section-title {
  position: relative;
  display: inline-block;
  margin-bottom: 2.5rem;
  font-size: clamp(1.8rem, 3vw, 2.5rem);
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 0;
  width: 50px;
  height: 4px;
  background: linear-gradient(to right, var(--primary), var(--secondary));
  border-radius: 2px;
}

/* Navigation */
.navbar {
  transition: var(--transition);
  background-color: rgba(13, 45, 58, 0.95) !important;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  padding: 1rem;
  box-shadow: 0 2px 30px rgba(0, 0, 0, 0.1);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.navbar.scrolled {
  padding: 0.8rem 1rem;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.15);
}

.navbar-brand {
  font-size: 1px;
  letter-spacing: 0.5px;
  transition: var(--transition);
  color: var(--text-light) !important;
  position: absolute;
  align-self: start;
  font-family: Arial, Helvetica, sans-serif;
}

.nav-link {
  position: relative;
  padding: 0.5rem 1rem !important;
  font-weight: 500;
  transition: var(--transition);
  color: rgba(255, 255, 255, 0.8) !important;
}

.nav-link::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: var(--transition);
}

.nav-link:hover {
  color: var(--primary) !important;
  background: rgba(24, 145, 226, 0.1) !important;
}

.nav-link:hover::before {
  width: 70%;
}

/* Card Components */
.card {
  border-radius: 15px;
  overflow: hidden;
  transition: var(--transition);
  height: 100%;
  display: flex;
  flex-direction: column;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.skill-card {
  background: var(--card-bg-dark);
  padding: 1.5rem;
  border-left: 3px solid var(--primary);
  border-radius: 10px;
}

body[data-bs-theme="light"] .skill-card {
  background: var(--card-bg-light);
  border-left: 3px solid var(--primary);
}

.skill-card:hover {
  transform: translateY(-10px);
  background: #1088d8f3;
  color: #000;
}

.project-card {
  background: var(--card-bg-dark);
  border: 1px solid rgba(255, 255, 255, 0.445);
  border-radius: 15px;
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  position: relative;
}

.project-card:hover {
  transform: translateY(-10px);
  background: #1b86dd;
}

.card-img-top {
  height: 200px;
  object-fit: cover;
  transition: transform 0.5s ease;
  border-radius: 15px 15px 0 0;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.project-card:hover .card-img-top {
  transform: scale(1.05);
}

.testimonial-card {
  background: rgba(255, 255, 255, 0.05);
  padding: 2rem;
  position: relative;
}

body[data-bs-theme="light"] .testimonial-card {
  background: var(--card-bg-light);
}

/* Form Styles */
.form-control {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-light);
  transition: var(--transition);
}

body[data-bs-theme="light"] .form-control {
  background: var(--card-bg-light);
  color: var(--text-dark);
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 0.25rem rgba(24, 145, 226, 0.25);
}

footer {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

.navbar-brand {
    display: inline-block;
    font-size: 2rem;
    text-decoration: none;
    transition: transform 0.3s ease;
}

.navbar-brand:hover {
    transform: scale(1.05);
}

.text-primary {
    color: #0d6efd;
}

.social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    margin: 0 8px;
    color: white;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    font-size: 1.2rem;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-icon:hover {
    background-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-3px);
}

.text-muted {
    color: #6c757d !important;
}

.small {
    font-size: 0.875em;
}

/* Responsive adjustments */
@media (max-width: 576px) {
    .navbar-brand {
        font-size: 1.5rem;
    }
    
    .social-icon {
        width: 36px;
        height: 36px;
        font-size: 1rem;
        margin: 0 6px;
    }
}

/* Theme Switch & Back to Top */
.theme-switch,
.back-to-top {
  position: fixed;
  z-index: 999;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  transition: var(--transition);
  border: none;
}

.theme-switch {
  bottom: 30px;
  right: 30px;
  background: var(--primary);
  color: white;
}

.back-to-top {
  bottom: 90px;
  right: 30px;
  background: var(--primary);
  color: white;
  opacity: 0;
  visibility: hidden;
}

.back-to-top.active {
  opacity: 1;
  visibility: visible;
}

/* Responsive Adjustments */
@media (max-width: 992px) {
  .hero-title {
    font-size: 2.8rem;
  }
}

@media (max-width: 768px) {
  .hero {
    padding-top: 100px;
    text-align: center;
  }
  
  .hero-title {
    font-size: 2.2rem;
  }
  
  .floating-shapes div {
    display: none;
  }
  
  .theme-switch, 
  .back-to-top {
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }
  
  .back-to-top {
    bottom: 80px;
  }
}

@media (max-width: 576px) {
  .hero-title {
    font-size: 1.8rem;
  }
  
  .section-title {
    font-size: 1.5rem;
  }
  
  .btn {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
  }
}