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

:root {
  /* Dark Mode Variables (Default) */
  --bg-color: #050505;
  --text-color: #ffffff;
  --text-muted: #a0a0a0;
  --accent-1: #ff0000;
  --accent-2: #cc0000;
  --card-bg: rgba(255, 255, 255, 0.03);
  --card-border: rgba(255, 255, 255, 0.08);
  --nav-bg: rgba(5, 5, 5, 0.85);
  --glow-color: rgba(255, 0, 0, 0.15);
  --btn-text: #ffffff;
}

[data-theme="light"] {
  /* Light Mode Variables */
  --bg-color: #ffffff;
  --text-color: #1a1a1a;
  --text-muted: #555555;
  --accent-1: #e60000;
  --accent-2: #b30000;
  --card-bg: #ffffff;
  --card-border: rgba(0, 0, 0, 0.1);
  --nav-bg: rgba(255, 255, 255, 0.9);
  --glow-color: rgba(255, 0, 0, 0.08);
  --btn-text: #ffffff;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color 0.3s, color 0.3s;
}

/* Background Glow */
.bg-glow {
  position: fixed;
  top: -20%;
  left: -10%;
  width: 50vw;
  height: 50vw;
  background: radial-gradient(circle, var(--glow-color) 0%, transparent 70%);
  z-index: -1;
  border-radius: 50%;
  filter: blur(80px);
  animation: pulse 10s infinite alternate;
}

.bg-glow.right {
  top: 40%;
  left: auto;
  right: -20%;
}

@keyframes pulse {
  0% { transform: scale(1); opacity: 0.8; }
  100% { transform: scale(1.2); opacity: 1; }
}

/* Navbar */
nav {
  position: fixed;
  top: 0;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 5%;
  background: var(--nav-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid var(--card-border);
  transition: background-color 0.3s, border-color 0.3s;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-brand img {
  height: 50px;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-color);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s;
  font-size: 0.95rem;
}

.nav-links a:hover {
  color: var(--accent-1);
}

.theme-toggle {
  background: none;
  border: none;
  color: var(--text-color);
  font-size: 1.2rem;
  cursor: pointer;
  transition: color 0.3s;
}

.theme-toggle:hover {
  color: var(--accent-1);
}

.hamburger {
  display: none;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
}

.hamburger div {
  width: 25px;
  height: 2px;
  background-color: var(--text-color);
  transition: all 0.3s ease;
}

/* Sections */
section {
  padding: 8rem 5% 4rem;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 3rem;
  text-align: center;
  letter-spacing: -1px;
}

.section-title span {
  color: var(--accent-1);
}

/* Hero Section */
.hero {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: 12rem;
}

.hero-content {
  max-width: 800px;
}

.badge {
  display: inline-block;
  padding: 0.5rem 1rem;
  border-radius: 50px;
  background: rgba(255, 0, 0, 0.1);
  border: 1px solid rgba(255, 0, 0, 0.2);
  color: var(--accent-1);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  letter-spacing: -2px;
}

.hero p {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.btn-primary {
  display: inline-block;
  padding: 1rem 2rem;
  border-radius: 8px;
  background: linear-gradient(45deg, var(--accent-2), var(--accent-1));
  color: var(--btn-text);
  font-weight: 700;
  text-decoration: none;
  font-size: 1rem;
  transition: transform 0.3s, box-shadow 0.3s;
  box-shadow: 0 4px 15px rgba(255, 0, 0, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 0, 0, 0.4);
}

/* Services / Expertise */
.grid-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 2.5rem;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s, background-color 0.3s;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

[data-theme="dark"] .card {
  box-shadow: none;
}

.card:hover {
  transform: translateY(-5px);
  border-color: rgba(255, 0, 0, 0.3);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .card:hover {
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.card-icon {
  font-size: 2.5rem;
  color: var(--accent-1);
  margin-bottom: 1.5rem;
}

.card h3 {
  font-size: 1.4rem;
  margin-bottom: 1rem;
  font-weight: 700;
}

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

/* Tech Stack Tags */
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

.tag {
  background: rgba(128, 128, 128, 0.1);
  border: 1px solid rgba(128, 128, 128, 0.2);
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
  font-size: 0.8rem;
  color: var(--text-color);
  font-weight: 500;
}

/* Education List */
.edu-list {
  list-style: none;
  margin-top: 1rem;
}

.edu-list li {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 0.8rem;
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}

.edu-list li i {
  color: var(--accent-1);
  margin-top: 3px;
}

/* Client Cards */
.client-card {
  text-decoration: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
  color: var(--text-color);
}
.client-card i {
  font-size: 1.5rem;
  color: var(--accent-1);
  margin-bottom: 0.5rem;
}
.client-card h3 {
  font-size: 1.15rem;
  margin: 0;
}

/* Modal */
.modal {
  display: none; 
  position: fixed; 
  z-index: 2000; 
  left: 0;
  top: 0;
  width: 100%; 
  height: 100%; 
  overflow: auto; 
  background-color: rgba(0,0,0,0.6); 
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  justify-content: center;
  align-items: center;
}

.modal.show {
  display: flex;
}

.modal-content {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  padding: 2.5rem;
  border-radius: 12px;
  width: 90%;
  max-width: 450px;
  position: relative;
  color: var(--text-color);
  box-shadow: 0 10px 30px rgba(0,0,0,0.3);
  animation: modalFadeIn 0.3s ease-out;
}

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

.close-modal {
  position: absolute;
  top: 15px;
  right: 20px;
  color: var(--text-muted);
  font-size: 1.8rem;
  font-weight: bold;
  cursor: pointer;
  transition: color 0.3s;
}

.close-modal:hover {
  color: var(--accent-1);
}

.form-group {
  margin-bottom: 1.2rem;
  text-align: left;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.8rem;
  border-radius: 6px;
  border: 1px solid var(--card-border);
  background: var(--bg-color);
  color: var(--text-color);
  font-family: inherit;
  transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-1);
}

/* Footer */
footer {
  text-align: center;
  padding: 3rem 5%;
  border-top: 1px solid var(--card-border);
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Animations */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 768px) {
  .nav-right {
    gap: 1rem;
  }
  
  .nav-links {
    position: fixed;
    top: 70px;
    right: -100%;
    flex-direction: column;
    background: var(--nav-bg);
    width: 100%;
    height: calc(100vh - 70px);
    align-items: center;
    justify-content: center;
    transition: 0.3s;
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
  }

  .nav-links.active {
    right: 0;
  }

  .hamburger {
    display: flex;
  }

  .hamburger.active div:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  .hamburger.active div:nth-child(2) {
    opacity: 0;
  }
  .hamburger.active div:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .hero h1 {
    font-size: 2.5rem;
  }
}