/* Base Styles */
:root {
    --bg-dark: #0a0f18; /* Deep dark blue/black for main background */
    --bg-medium-dark: #101724; /* Slightly lighter for cards/sections */
    --bg-light-dark: #1a2333; /* For hover or subtle contrasts */
    
    --primary-color: #00f7ff; /* Neon cyan/blue - main accent */
    --primary-color-rgb: 0, 247, 255;

    --secondary-color: #f8f9fa; /* Light color for primary text on dark bg */
    --secondary-color-rgb: 248, 249, 250;

    --accent-color: #ff00c8; /* Neon pink/magenta - secondary accent */
    --accent-color-rgb: 255, 0, 200;

    --text-color: #adb5bd; /* Muted text color (grayish) */
    --text-light: #6c757d; /* Even more muted for less important text */

    --border-color: rgba(var(--primary-color-rgb), 0.2); /* Subtle border with primary accent */

    /* Optional: Font Family */
    /* --font-primary: 'Poppins', sans-serif; */
    /* --font-mono: 'Roboto Mono', monospace; */
}

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

body {
    /* font-family: var(--font-primary, 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif); */
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.7; /* Increased for better readability on dark */
    color: var(--secondary-color); /* Default text is light */
    background-color: var(--bg-dark);
    min-height: 100vh;
    overflow-x: hidden; /* Prevent horizontal scroll from AOS or other effects */
}

.container {
    width: 90%;
    max-width: 1140px; /* Standard bootstrap lg breakpoint */
    margin: 0 auto;
    padding: 0 15px;
}

/* Header Styles */
.site-header {
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}
.site-header .navbar {
    background-color: rgba(10, 15, 24, 0.7); /* Darker, more transparent */
    backdrop-filter: blur(12px); /* Stronger blur */
    transition: background-color 0.3s ease, box-shadow 0.3s ease, padding 0.3s ease;
    padding: 0.4rem 0; /* Thinner navbar */
    border-bottom: 1px solid transparent; /* Prepare for scrolled state border */
}

.site-header .navbar.scrolled {
    background-color: rgba(16, 23, 36, 0.85); /* Slightly more opaque on scroll */
    box-shadow: 0 2px 15px rgba(var(--primary-color-rgb), 0.1);
    padding: 0.3rem 0; /* Slightly thinner on scroll */
    border-bottom: 1px solid var(--border-color);
}

.site-header .navbar-brand {
    color: var(--primary-color) !important;
    font-size: 1.4rem; /* Slightly smaller */
    font-weight: 700;
    letter-spacing: 1px;
    /* font-family: var(--font-mono, monospace); */
}
.site-header .navbar-toggler {
    border: 1px solid rgba(var(--primary-color-rgb), 0.5);
}
.site-header .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(0, 247, 255, 0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

.navbar-nav .nav-link {
    color: var(--secondary-color) !important;
    opacity: 0.8;
    position: relative;
    padding-top: 0.5rem !important; /* Bootstrap overrides */
    padding-bottom: 0.5rem !important;
    transition: color 0.3s ease, opacity 0.3s ease;
    margin-left: 0.5rem; /* Reduced margin */
    margin-right: 0.5rem;
    font-size: 0.9rem; /* Slightly smaller nav links */
}

.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: 5px; /* Adjusted for thinner bar */
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width 0.4s ease-in-out;
    border-radius: 1px;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active { /* Style for active link */
    color: var(--primary-color) !important;
    opacity: 1;
}

.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after {
    width: 60%; /* Underline for active/hover */
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    color: var(--secondary-color);
    text-align: center;
    padding-top: 80px; /* Account for fixed header */
    position: relative;
    background-color: var(--bg-dark); /* Fallback color */
    
    /* --- HERO BACKGROUND IMAGE --- */
    /* Replace 'YOUR_IMAGE_URL_HERE.jpg' with the actual URL of your chosen image */
    /* For example: background-image: url('https://images.unsplash.com/photo-1518770660439-4636190af475?auto=format&fit=crop&w=1350'); */
    background-image: url('YOUR_IMAGE_URL_HERE.jpg'); 
    background-size: cover;
    background-position: center center;
    background-attachment: fixed; /* Parallax-like effect */
}

.hero::before { /* Dark overlay for text readability over image */
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(10, 15, 24, 0.7) 0%, rgba(10, 15, 24, 0.95) 100%);
    z-index: 0;
}
.hero .container {
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: clamp(2.8rem, 6vw, 4.5rem);
    font-weight: 700;
    margin-bottom: 1rem;
    color: #fff; /* Brighter for hero title */
    text-shadow: 0 0 15px rgba(var(--primary-color-rgb), 0.5), 0 0 5px rgba(var(--primary-color-rgb), 0.3);
    animation: fadeInDown 1s ease-out 0.5s backwards;
}

.hero .lead.subtitle {
    font-size: clamp(1.2rem, 3vw, 1.6rem);
    margin-bottom: 2.5rem;
    opacity: 0.85;
    color: var(--secondary-color);
    animation: fadeInUp 1s ease-out 0.8s backwards;
}

.hero .btn {
    animation: fadeInUp 1s ease-out 1.1s backwards;
}

/* Section Styles */
.section {
    padding: 5rem 0;
    position: relative; /* For potential pseudo-elements or layering */
    background-color: var(--bg-medium-dark); /* Default section background */
}
.section:nth-of-type(odd) { /* Alternate section background for depth */
    background-color: var(--bg-dark);
}
/* Ensure hero section has its distinct styling if it's the first "section" tag */
section.hero {
     background-color: transparent !important; /* Override general section for hero */
}


.section h2 {
    text-align: center;
    margin-bottom: 3.5rem; /* Increased spacing */
    font-size: clamp(2rem, 4vw, 2.8rem);
    color: var(--primary-color); /* Section titles with accent */
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.85rem;
}
.section h2 .section-icon {
    font-size: clamp(1.8rem, 3.5vw, 2.5rem);
    opacity: 1;
    color: var(--primary-color); /* Ensure icon matches title color */
}


/* About Section */
.profile-image {
    border: 3px solid var(--primary-color);
    box-shadow: 0 0 25px rgba(var(--primary-color-rgb), 0.3);
}
.about-section p {
    color: var(--text-color);
    font-size: 1.05rem;
}

/* Education & Skills Card Styles */
.education-category, .skills-section .card {
    background-color: var(--bg-light-dark); /* Slightly lighter card background */
    padding: 1.75rem;
    border-radius: 8px; /* Sharper edges */
    border: 1px solid var(--border-color);
    box-shadow: 0 5px 15px rgba(0,0,0, 0.2), inset 0 0 5px rgba(var(--primary-color-rgb),0.05); /* Subtle inset */
    transition: transform 0.3s ease-out, box-shadow 0.3s ease-out, border-color 0.3s ease-out;
}
.education-category:hover, .skills-section .card:hover {
    transform: translateY(-7px) scale(1.02);
    box-shadow: 0 10px 25px rgba(var(--primary-color-rgb), 0.15), 0 0 10px rgba(var(--primary-color-rgb),0.1);
    border-color: rgba(var(--primary-color-rgb), 0.5);
}
.education-category h3, .skills-section .card-title {
    color: var(--primary-color);
    font-size: 1.15rem; /* Adjusted size */
    font-weight: 600;
    margin-bottom: 1rem;
}
.education-category p, .skills-section .list-unstyled li {
    color: var(--text-color);
    font-size: 0.9rem;
}
.education-category .text-muted {
    color: var(--text-light) !important; /* Override bootstrap */
    font-size: 0.8rem;
}

.skills-section .list-unstyled li i.fa-check {
    color: var(--primary-color) !important; /* Use accent for checkmarks */
    opacity: 0.7;
    transition: opacity 0.3s ease, transform 0.3s ease;
}
.skills-section .list-unstyled li:hover i.fa-check {
    opacity: 1;
    transform: scale(1.2) translateX(-2px);
}

/* Projects Section */
.project-card {
    background-color: var(--bg-light-dark);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0, 0.25);
    transition: transform 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275),
                box-shadow 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275),
                border-color 0.3s ease-out;
    display: flex;
    flex-direction: column;
}
.project-card:hover {
    transform: translateY(-10px) scale(1.03);
    box-shadow: 0 12px 30px rgba(var(--primary-color-rgb), 0.2), 0 0 15px rgba(var(--primary-color-rgb),0.1);
    border-color: rgba(var(--primary-color-rgb), 0.6);
}
.project-card .card-img-top {
    height: 220px; /* Slightly taller */
    object-fit: cover;
    transition: transform 0.5s ease, filter 0.5s ease;
    filter: grayscale(30%) brightness(0.9); /* Desaturate slightly */
}
.project-card:hover .card-img-top {
    transform: scale(1.08);
    filter: grayscale(0%) brightness(1);
}
.project-card .card-body {
  flex-grow: 1;
  padding: 1.25rem;
}
.project-card .card-title {
    color: var(--primary-color);
    font-weight: 600;
}
.project-card .card-text {
    color: var(--text-color);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* Contact Section */
.contact-section {
    background-color: var(--bg-dark); /* Darker background for contact */
}
.contact-section h3 {
    color: var(--primary-color);
    font-weight: 600;
}
.contact-section p, .contact-section a {
    color: var(--text-color);
}
.contact-section a:hover {
    color: var(--primary-color);
}
.contact-section .form-label {
    color: var(--secondary-color);
    opacity: 0.9;
    font-size: 0.9rem;
}
.contact-section .form-control {
    background-color: var(--bg-light-dark);
    border: 1px solid var(--border-color);
    color: var(--secondary-color);
    border-radius: 4px; /* Sharper edges */
    padding: 0.75rem 1rem;
}
.contact-section .form-control::placeholder {
    color: var(--text-light);
}
.contact-section .form-control:focus {
    background-color: var(--bg-medium-dark);
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(var(--primary-color-rgb), 0.25);
    color: var(--secondary-color);
}

/* Button Styles */
.btn {
    background: transparent;
    color: var(--primary-color) !important;
    padding: 0.7rem 1.8rem;
    border: 2px solid var(--primary-color);
    border-radius: 5px;
    font-weight: 600; /* Bolder */
    letter-spacing: 0.5px;
    text-transform: uppercase; /* Indie hacker often use uppercase */
    font-size: 0.85rem;
    transition: all 0.3s ease-in-out;
    box-shadow: 0 0 10px rgba(var(--primary-color-rgb),0.2), inset 0 0 0 0px var(--primary-color);
}

.btn:hover {
    color: var(--bg-dark) !important;
    /* background: var(--primary-color); */
    box-shadow: 0 0 20px rgba(var(--primary-color-rgb),0.5), inset 0 0 0 50px var(--primary-color); /* Fill effect */
    transform: translateY(-3px) scale(1.03);
}
.btn:active {
    transform: translateY(-1px) scale(1);
    box-shadow: 0 0 5px rgba(var(--primary-color-rgb),0.3), inset 0 0 0 50px var(--primary-color);
}
.btn-primary { /* Specific for primary if needed, but generic .btn is now styled */
    /* Keep if you need different primary button styling */
}
.btn-outline-secondary {
    color: var(--text-color) !important;
    border-color: var(--text-color);
}
.btn-outline-secondary:hover {
    color: var(--bg-dark) !important;
    border-color: var(--secondary-color);
    box-shadow: 0 0 20px rgba(var(--secondary-color-rgb),0.3), inset 0 0 0 50px var(--secondary-color);
}


/* Footer Styles */
.site-footer {
    background: var(--bg-dark); /* Consistent dark footer */
    color: var(--text-color);
    padding: 2.5rem 0;
    border-top: 1px solid var(--border-color);
}
.site-footer .social-links a {
    color: var(--text-light);
    margin: 0 0.8rem;
    font-size: 1.6rem;
    transition: color 0.3s, transform 0.3s;
}
.site-footer .social-links a:hover {
    color: var(--primary-color);
    transform: scale(1.25) translateY(-2px);
}
.site-footer p {
    font-size: 0.85rem;
    opacity: 0.7;
}

/* Custom Cursor Styles */
.cursor-dot,
.cursor-outline {
    pointer-events: none;
    position: fixed;
    top: 0;
    left: 0;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    opacity: 0;
    z-index: 10001;
    transition: opacity 0.2s ease-out, transform 0.15s ease-out, background-color 0.2s ease-out, border-color 0.2s ease-out;
}
.cursor-dot {
    width: 6px;
    height: 6px;
    background-color: var(--primary-color); /* Main accent */
}
.cursor-outline {
    width: 30px;
    height: 30px;
    border: 2px solid var(--primary-color); /* Main accent */
    background-color: rgba(var(--primary-color-rgb),0.05);
}
body:hover .cursor-dot, body:hover .cursor-outline {
    opacity: 1;
}
/* Hover effects for cursor are handled in JS by changing properties */

/* Keyframe Animations */
@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-40px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(40px); }
    to { opacity: 1; transform: translateY(0); }
}
/* subtleRotate was for old hero, can be removed or repurposed if needed */
/* @keyframes subtleRotate {
    from { transform: rotate(0deg) scale(0.9); }
    to { transform: rotate(360deg) scale(1.1); }
} */


/* Responsive Styles */
@media (max-width: 991.98px) {
    .site-header .navbar {
        background-color: rgba(16, 23, 36, 0.95); /* Darker for collapsed nav */
        backdrop-filter: blur(10px);
    }
    .navbar-nav .nav-link {
        padding-left: 1rem;
        padding-top: 0.6rem;
        padding-bottom: 0.6rem;
        margin-left: 0; margin-right: 0;
    }
    .navbar-nav .nav-link::after {
        left: 1rem; /* Align with text */
        transform: translateX(0);
        bottom: 0.35rem;
    }
     .navbar-nav .nav-link:hover::after,
     .navbar-nav .nav-link.active::after {
        width: 35%;
    }
}

@media (max-width: 768px) {
    .hero h1 { font-size: 2.2rem; }
    .subtitle { font-size: 1.05rem; }
    .section h2 { font-size: 1.8rem; }
    .section h2 .section-icon { font-size: 1.6rem; }
}

/* Remove previous Thank You page styles if not used, or adapt them to dark theme */
.thank-you-section {
   /* ... adapt to dark theme if you use this page ... */
}