/* ===================================================================
   1. VARIABLES & THEME SETUP
=================================================================== */

:root {
    --bg-color: #0a192f;        /* Dark Navy Blue */
    --text-color: #ccd6f6;      /* Light Slate */
    --accent-color: #64ffda;    /* Bright Teal/Mint */
    --card-bg-color: #112240;    /* Lighter Navy */
    --navbar-bg-color: rgba(10, 25, 47, 0.85); /* Semi-transparent Navy */
    --border-color: #233554;
    --shadow-color: rgba(2, 12, 27, 0.7);
    --icon-color: #a8b2d1;       /* Slate for icons */
    --icon-hover-color: var(--accent-color);
    --btn-primary-bg: var(--accent-color);
    --btn-primary-text: #0a192f; /* Dark text for contrast on bright button */
}

body.light-mode {
    --bg-color: #f0f2f5;        /* Light Gray */
    --text-color: #1c1e21;      /* Nearly Black */
    --accent-color: #0d6efd;    /* Standard Bootstrap Blue */
    --card-bg-color: #ffffff;    /* White */
    --navbar-bg-color: rgba(255, 255, 255, 0.85); /* Semi-transparent White */
    --border-color: #dee2e6;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --icon-color: #495057;       /* Dark Gray for icons */
    --icon-hover-color: var(--accent-color);
    --btn-primary-bg: var(--accent-color);
    --btn-primary-text: #ffffff; /* White text on blue button */
}

/* ===================================================================
   2. GLOBAL & LAYOUT STYLES
=================================================================== */

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s ease, color 0.3s ease;
}

.section-padding {
    padding: 100px 0;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    color: var(--text-color);
}

p {
    line-height: 1.7;
    color: var(--text-color);
}

.lead {
     color: var(--icon-color);
}

.text-accent {
    color: var(--accent-color);
}

/* ===================================================================
   3. NAVBAR
=================================================================== */

.navbar {
    background-color: var(--navbar-bg-color);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.navbar .navbar-brand {
    color: var(--accent-color);
}

.navbar .nav-link {
    color: var(--text-color);
    transition: color 0.3s;
}

.navbar .nav-link:hover,
.navbar .nav-link.active {
    color: var(--accent-color);
}

.navbar-toggler {
    border-color: rgba(255,255,255,0.1);
}

.navbar-toggler-icon {
    filter: invert(1);
    opacity: 0.8;
}

body.light-mode .navbar-toggler-icon {
    filter: none;
}


/* ===================================================================
   4. HERO SECTION & PROFILE PICTURE
=================================================================== */

#home {
    background-color: var(--bg-color);
}

/* FIX FOR PROFILE PICTURE */
.hero-img {
    width: 380px;
    height: 380px;
    object-fit: cover; /* This prevents the image from stretching */
    border: 3px solid var(--accent-color);
    box-shadow: 0 10px 30px -15px var(--shadow-color);
}


/* ===================================================================
   5. BUTTONS & SOCIAL ICONS
=================================================================== */
.btn {
    border-radius: 4px;
    padding: 12px 28px;
    font-weight: 600;
}

.btn-primary {
    background-color: var(--btn-primary-bg);
    border-color: var(--btn-primary-bg);
    color: var(--btn-primary-text);
}

.btn-primary:hover {
    background-color: transparent;
    border-color: var(--accent-color);
    color: var(--accent-color);
    opacity: 0.9;
}

.btn-outline-primary {
    border-color: var(--accent-color);
    color: var(--accent-color);
}

.btn-outline-primary:hover {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    color: var(--btn-primary-text);
}


.social-icons a {
    font-size: 2rem;
    color: var(--icon-color);
    margin: 0 10px;
    transition: color 0.3s ease-in-out;
}

.social-icons a:hover {
    color: var(--icon-hover-color);
    transform: translateY(-5px);
}

/* ===================================================================
   6. ABOUT SECTION & TECH BADGES
=================================================================== */
.tech-badge {
    display: inline-block;
    background-color: var(--card-bg-color);
    color: var(--accent-color);
    padding: 5px 15px;
    border-radius: 5px;
    margin: 5px;
    font-family: 'SF Mono', 'Fira Code', 'Fira Mono', 'Roboto Mono', monospace;
    font-size: 0.9rem;
    border: 1px solid var(--border-color);
}

/* ===================================================================
   7. CARDS (Experience & Projects)
=================================================================== */
.card {
    background-color: var(--card-bg-color);
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 30px -15px var(--shadow-color);
    transition: all 0.25s cubic-bezier(0.645,0.045,0.355,1);
    border-radius: 8px;
}

.card:hover {
    transform: translateY(-7px);
    box-shadow: 0 20px 30px -15px var(--shadow-color);
}

.card-title {
    color: var(--text-color);
    margin-bottom: 1rem;
}

.card-text {
    color: var(--icon-color);
}

.card .project-link {
    margin-top: 1rem; /* Adds space between the project description and the button */
}

.card .btn {
    /* Custom padding for buttons inside cards to make them smaller than main CTAs */
    padding: 0.5rem 1.25rem;
    font-size: 0.9rem;
}

/* ===================================================================
   8. THEME TOGGLE SWITCH 
=================================================================== */

.theme-switch-wrapper {
  position: relative;
}

.theme-switch {
  position: relative;
  display: inline-block;
  width: 50px;
  height: 28px;
}

.theme-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #2c3e50;
  transition: .4s;
}

.slider.round {
  border-radius: 28px;
}

.handle {
  position: absolute;
  height: 20px;
  width: 20px;
  left: 4px;
  bottom: 4px;
  background-color: white;
  transition: .4s;
  border-radius: 50%;
  /* Make this the positioning context for the icons */
  display: flex; /* Kept for fallback, but absolute positioning is key */
  align-items: center;
  justify-content: center;
}

input:checked + .slider {
  background-color: var(--accent-color);
}

input:checked + .slider .handle {
  transform: translateX(22px);
}

.handle-icon {
  /* Stack icons on top of each other and center them */
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: #2c3e50;
  font-size: 12px;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.moon-icon { opacity: 1; }
.sun-icon { opacity: 0; }

input:checked + .slider .handle .moon-icon { opacity: 0; }
input:checked + .slider .handle .sun-icon { opacity: 1; color: var(--accent-color); }