:root {
  /* Global Variables */
  --transition-base: 0.3s ease-in-out;
  --border-radius-sm: 8px;
  --border-radius-md: 15px;
  --border-radius-lg: 30px;
  --container-width: 1200px;

  /* Fonts */
  --font-heading: "Inter", sans-serif;
  --font-body: "Outfit", sans-serif;
}

/* Dark Theme (Default) */
[data-theme="dark"] {
  --bg-primary: #0a0a0c;
  --bg-secondary: #141418;
  --text-primary: #ffffff;
  --accent-color: #982FF9; 
  --accent-glow: rgba(152, 47, 249, 0.4);
  --card-bg: rgba(255, 255, 255, 0.03);
  --border-color: rgba(255, 255, 255, 0.1);
  --nav-bg: rgba(10, 10, 12, 0.8);
}

/* Light Theme */
[data-theme="light"] {
  --bg-primary: #f8f9fa;
  --bg-secondary: #ffffff;
  --text-primary: #1a1a1a;
  --text-secondary: #4a4a4a;
  --accent-color: #982FF9;
  --accent-glow: rgba(152, 47, 249, 0.2);
  --card-bg: rgba(0, 0, 0, 0.02);
  --border-color: rgba(0, 0, 0, 0.1);
  --nav-bg: rgba(248, 249, 250, 0.8);
}

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

html, body {
  overflow-x: hidden;
  width: 100%;
  position: relative;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.6;
  transition:
    background-color var(--transition-base),
    color var(--transition-base);
}

h1,
h2,
h3,
h4,
.font-heading {
  font-family: var(--font-heading);
  font-weight: 700;
}

/* Glassmorphism Utility */
.glass {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    transition: var(--transition-base);
}

.glass-hover:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--accent-color);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

[data-theme="light"] .glass-hover:hover {
    background: rgba(0, 0, 0, 0.03);
}

/* Skill Icons */
.skill-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--accent-color);
}

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

.timeline::after {
    content: '';
    position: absolute;
    width: 2px;
    background: var(--border-color);
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -1px;
}

.timeline-item {
    padding: 10px 40px;
    position: relative;
    background-color: inherit;
    width: 50%;
}

.timeline-item::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    right: -10px;
    background-color: var(--bg-primary);
    border: 3px solid var(--accent-color);
    top: 15px;
    border-radius: 50%;
    z-index: 1;
}

.left { left: 0; }
.right { left: 50%; }
.right::after { left: -10px; }

@media screen and (max-width: 768px) {
    .timeline::after { left: 31px; }
    .timeline-item { width: 100%; padding-left: 70px; padding-right: 25px; }
    .timeline-item::after { left: 21px; }
    .left, .right { left: 0; }
    
    /* Font size adjustments to prevent overflow */
    .display-3 {
        font-size: calc(1.5rem + 3.3vw);
    }
    .display-5 {
        font-size: calc(1.3rem + 2vw);
    }
    .mobile-nav-link {
        font-size: 2rem;
    }
}

/* Section Spacing */
section {
  padding: 100px 0;
}

/* Hero Styles */
.hero-cta .btn {
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.85rem;
}

@media (min-width: 992px) {
    .hero-cta .btn {
        font-size: 1rem;
    }
}

.hero-cta .btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px var(--accent-glow);
    filter: brightness(1.1);
}

.hero-cta .btn-outline-secondary:hover {
    border-color: var(--accent-color);
    color: var(--accent-color) !important;
    background: transparent;
    transform: translateY(-3px);
}

/* Theme Toggle Button Styles */
.navbar-brand img {
    transition: var(--transition-base);
}

.navbar-brand:hover img {
    transform: scale(1.05);
    filter: drop-shadow(0 0 5px var(--accent-glow));
}

.navbar-nav .nav-link {
    color: var(--accent-color) !important;
    transition: var(--transition-base);
    opacity: 0.8;
}

.navbar-nav .nav-link:hover {
    color: var(--accent-color) !important;
    opacity: 1;
    transform: translateY(-2px);
}

.theme-toggle {
  cursor: pointer;
  background: none;
  border: 1px solid var(--border-color);
  padding: 8px;
  border-radius: 50%;
  color: var(--text-primary);
  transition: var(--transition-base);
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-toggle:hover {
  background: var(--card-bg);
  border-color: var(--accent-color);
  box-shadow: 0 0 10px var(--accent-glow);
}

/* Typing Effect Cursor */
.typing-cursor::after {
    content: '|';
    animation: blink 0.8s infinite;
    color: var(--accent-color);
    margin-left: 2px;
}

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

/* Theme Toggle Morphs */
#theme-toggle i {
    transition: transform 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

#theme-toggle:active i {
    transform: scale(0.5) rotate(180deg);
}

/* Utility for text gradient */
.text-gradient {
    background: linear-gradient(135deg, var(--accent-color) 0%, #00d2ff 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}
/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--accent-color);
  border-radius: 10px;
}

/* Mobile Menu Toggle (Hamburger) */
.menu-toggle {
    width: 45px;
    height: 45px;
    display: none; /* Hidden by default (desktop) */
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: var(--accent-color);
    border: none;
    border-radius: 12px;
    cursor: pointer;
    z-index: 1051;
    transition: var(--transition-base);
    box-shadow: 0 4px 15px var(--accent-glow);
}

@media screen and (max-width: 991px) {
    .menu-toggle {
        display: flex; /* Show on mobile */
    }
}

.menu-toggle:hover {
    transform: scale(1.05);
    filter: brightness(1.1);
}

.menu-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background-color: #ffffff; /* Always white on the accent background */
    margin: 3px 0;
    transition: 0.4s cubic-bezier(0.68, -0.6, 0.32, 1.6);
}

.menu-toggle.active span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
    transform: translateX(-20px);
}

.menu-toggle.active span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

/* Mobile Menu Overlay */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--nav-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 1050;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}

.mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-nav-list {
    perspective: 1000px;
}

.mobile-nav-link {
    display: inline-block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    margin: 15px 0;
    transition: 0.3s ease;
    font-family: var(--font-heading);
    opacity: 1;
}

.mobile-nav-link:hover {
    color: var(--accent-color);
    transform: translateX(10px);
}

.mobile-nav-list li {
    overflow: hidden;
}

/* Newsletter & Articles Custom Styles */
.text-accent { color: var(--accent-color); }
.w-fit { width: fit-content; }
.btn-outline-primary { color: var(--accent-color); border-color: var(--accent-color); }
.btn-outline-primary:hover {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    color: #fff;
    box-shadow: 0 0 15px var(--accent-glow);
}
.glass-input {
    background: var(--card-bg) !important;
    border: 1px solid var(--border-color) !important;
    color: var(--text-primary) !important;
}
.glass-input:focus {
    border-color: var(--accent-color) !important;
    box-shadow: 0 0 10px var(--accent-glow) !important;
}