/* css/style.css */

/* --- TABLE OF CONTENTS ---
1. Global Styles & Variables
2. Navbar
3. General Section Styling
4. Specific Sections
    - Home (Hero)
    - Projects
        - Filters
        - Project Cards (Iframe Preview)
    - About
    - Call-To-Action (CTA)
    - Contact
5. Footer
6. Utility Components
    - Back to Top Button
7. Dark Mode
8. Transitions & Animations
    - AOS Overrides
-----------------------------*/

/* --- 1. Global Styles & Variables --- */
:root {
    --primary-color: #0d6efd; /* Bootstrap Primary */
    --secondary-color: #6c757d; /* Bootstrap Secondary */
    --light-color: #f8f9fa;   /* Bootstrap Light */
    --dark-color: #212529;    /* Bootstrap Dark */
    --text-color: #343a40;
    --text-muted-color: #6c757d;
    --body-bg: #fff;
    --card-bg: #fff;
    --card-border-color: rgba(0,0,0,.125);
    --input-bg: #fff;
    --input-border-color: #ced4da;
    --input-color: #495057;

    --font-family-sans-serif: 'Poppins', sans-serif; /* Example modern font */
    --navbar-height: 56px; /* Adjust if your navbar height changes */
}

body {
    font-family: var(--font-family-sans-serif);
    background-color: var(--body-bg);
    color: var(--text-color);
    padding-top: var(--navbar-height); /* For fixed navbar */
    position: relative; /* For scrollspy */
    line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600; /* Slightly bolder headings */
}

a {
    transition: color 0.2s ease-in-out, opacity 0.2s ease-in-out;
}

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

/* --- 2. Navbar --- */
.navbar {
    transition: background-color 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
    background-color: var(--dark-color) !important; /* Default dark navbar */
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}
.navbar-brand {
    font-weight: bold;
    font-size: 1.5rem;
}
.navbar .nav-link {
    padding: 0.8rem 1rem;
    transition: color 0.2s ease-in-out, background-color 0.2s ease-in-out;
}
.navbar .nav-link:hover,
.navbar .nav-link.active {
    color: var(--primary-color) !important;
}
.navbar-toggler {
    border-color: rgba(255,255,255,0.2);
}
.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%28255, 255, 255, 0.8%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Dark mode toggle button in navbar */
#dark-mode-toggle {
    color: var(--light-color);
    border-color: var(--light-color);
}
#dark-mode-toggle:hover {
    background-color: var(--light-color);
    color: var(--dark-color);
}


/* --- 3. General Section Styling --- */
section {
    padding: 80px 0;
    min-height: 80vh; /* Ensure sections have a decent height */
    overflow-x: hidden; /* Prevent horizontal scroll from AOS animations */
}
section:nth-of-type(even) { /* Subtle alternating background for sections */
    background-color: var(--bs-gray-100); /* Bootstrap light grey for even sections */
}
body.dark-mode section:nth-of-type(even) {
    background-color: var(--bs-gray-800); /* Darker grey for even sections in dark mode */
}
body.dark-mode section:nth-of-type(odd) {
    background-color: var(--bs-gray-900); /* Even darker for odd sections in dark mode */
}

.section-title h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    padding-bottom: 20px;
    position: relative;
}
.section-title h2::after { /* Underline for section titles */
    content: '';
    position: absolute;
    display: block;
    width: 60px;
    height: 3px;
    background: var(--primary-color);
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
}
.section-title p {
    margin-bottom: 40px;
    color: var(--text-muted-color);
}

/* --- 4. Specific Sections --- */

/* Home (Hero) Section */
#home {
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('https://via.placeholder.com/1920x1080.png?text=Modern+Hero+Background') no-repeat center center/cover;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-height: 100vh; /* Full viewport height for hero */
    padding-top: var(--navbar-height); /* Account for navbar */
    background-color: var(--dark-color); /* Fallback for dark mode */
}
#home h1 {
    font-size: 3.5rem;
    font-weight: 700;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}
#home p {
    font-size: 1.25rem;
    margin-bottom: 30px;
}
#home .btn-primary {
    padding: 12px 30px;
    font-size: 1.1rem;
    font-weight: 600;
}

/* Projects Section */
/* #projects { */
    /* Uses default section styling */


/* Project Filters */
#project-filters .btn {
    margin: 0 5px 10px;
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
    border-radius: 20px; /* Pill-like buttons */
    padding: 8px 20px;
}
#project-filters .btn.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}
#project-filters .btn:not(.active):hover {
    background-color: var(--secondary-color);
    color: white;
    border-color: var(--secondary-color);
}


/* Project Cards (Iframe Preview) */
.project-card-outer { /* For filtering transitions */
    transition: opacity 0.4s ease-out, transform 0.4s ease-out;
    opacity: 1;
    transform: scale(1);
}
.project-card-outer.hide {
    opacity: 0;
    transform: scale(0.95);
    pointer-events: none; /* Disable interaction when hidden */
    height: 0; /* Collapse space during transition (optional) */
    margin-bottom: 0 !important; /* Collapse space */
    overflow: hidden; /* Clip content during collapse */
}

.project-card {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border-color);
    border-radius: 8px; /* Slightly more rounded cards */
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    overflow: hidden; /* Ensure card contents don't spill */
}
.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0,0,0,0.1);
}

.project-card .card-img-top-container {
    height: 220px; /* Target visual height for the preview area */
    background-color: #e9ecef; /* Light background for the preview area */
    position: relative;
    overflow: hidden; /* CRITICAL: Clips the scaled iframe to the container's bounds */
    border-bottom: 1px solid var(--card-border-color);
}

.project-iframe {
    /* Define the "virtual" desktop dimensions for the content INSIDE the iframe */
    width: 1280px;  /* Website inside renders as if it has 1280px width */
    height: 720px; /* And 720px height (16:9 aspect for 1280px) */

    /* Scale this large virtual view down */
    transform: scale(0.3056); /* (220px target height / 720px iframe height) */
    transform-origin: top left; /* Scale from the top-left corner */

    border: none;
}

.iframe-blocker {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1; /* Above the iframe to intercept clicks but allow scrolling */
    cursor: grab; /* Indicate scrollability */
    transition: background-color 0.3s ease-in-out;
}
.iframe-blocker:active {
    cursor: grabbing;
}

.fallback-image {
    width: 100%;
    height: 100%;
    object-fit: cover; /* Cover the area, may crop slightly */
    display: none; /* Hidden by default */
    position: absolute;
    top: 0;
    left: 0;
    background-color: #ccc; /* Fallback if image itself fails or is transparent */
}

.project-card .card-body {
    padding: 1.25rem;
}
.project-card .card-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}
.project-card .card-text {
    font-size: 0.875rem;
    color: var(--text-muted-color);
    flex-grow: 1;
    margin-bottom: 1rem;
    min-height: 50px; /* Ensure a minimum height for description area */
}
.project-card .tags-container .badge {
    margin-right: 5px;
    margin-bottom: 5px;
    font-size: 0.75rem;
    padding: 0.4em 0.7em;
}
.project-card .btn-outline-primary {
    font-weight: 500;
}

/* About Section */
#about .img-fluid {
    border: 5px solid var(--light-color);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}
#about h4 {
    margin-top: 1.5rem;
    color: var(--primary-color);
}
.skills-list .skill-badge {
    margin: 5px;
    font-size: 0.9rem;
    padding: 0.5em 1em;
}


.social-icons a {
    font-size: 2rem; /* Larger icons */
    margin: 0 12px;
    color: var(--text-color);
    transition: color 0.3s ease, transform 0.3s ease;
}
.social-icons a:hover {
    color: var(--primary-color);
    transform: translateY(-3px) scale(1.1); /* Subtle lift and scale effect */
}

/* Contact Section */
#contact .form-label {
    font-weight: 500;
}
#contact .form-control {
    border-radius: 5px;
    padding: 0.75rem 1rem;
    background-color: var(--input-bg);
    border: 1px solid var(--input-border-color);
    color: var(--input-color);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
#contact .form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(var(--bs-primary-rgb), 0.25); /* Bootstrap focus style */
    background-color: var(--input-bg); /* Ensure focus bg matches */
    color: var(--input-color); /* Ensure focus text color matches */
}
#contact .form-control::placeholder {
    color: var(--bs-gray-500);
}
#contact button[type="submit"] {
    padding: 10px 30px;
    font-size: 1.1rem;
    font-weight: 600;
}
#form-status .alert {
    border-radius: 5px;
}


/* --- 5. Footer --- */
footer {
    background-color: var(--dark-color);
    color: rgba(255,255,255,0.7);
    padding: 40px 0;
}
footer p {
    margin-bottom: 0.5rem;
}
footer .bi-heart-fill {
    color: #e83e8c; /* Bootstrap pink for heart */
    position: relative;
    top: 2px;
}

/* --- 6. Utility Components --- */

/* Back to Top Button */
#back-to-top {
    position: fixed;
    bottom: 25px;
    right: 25px;
    display: none; /* JS will handle display */
    z-index: 1030; /* Above most elements, below modals */
    opacity: 0;   /* JS will handle opacity for fade in/out */
    transition: opacity 0.3s ease-in-out, transform 0.3s ease;
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    font-size: 1.2rem;
    display: flex; /* Centering icon */
    align-items: center;
    justify-content: center;
}
#back-to-top:hover {
    background-color: #0b5ed7; /* Darker primary */
    border-color: #0a58ca;
    transform: translateY(-3px);
}


/* --- 7. Dark Mode --- */
body.dark-mode {
    --primary-color: #58a6ff; /* Lighter blue for dark mode */
    --secondary-color: #8b949e;
    --light-color: #21262d;   /* Darker "light" background */
    --dark-color: #0d1117;    /* Very dark background */
    --text-color: #c9d1d9;    /* Light grey text */
    --text-muted-color: #8b949e; /* Muted grey text */
    --body-bg: #0d1117;       /* Main page background */
    --card-bg: #161b22;       /* Card background */
    --card-border-color: #30363d; /* Card border */
    --input-bg: #0d1117;
    --input-border-color: #30363d;
    --input-color: #c9d1d9;

    background-color: var(--body-bg);
    color: var(--text-color);
}

body.dark-mode .navbar {
    background-color: #161b22 !important; /* Slightly lighter than body for depth */
    box-shadow: 0 2px 4px rgba(0,0,0,0.3);
}
body.dark-mode .navbar-brand,
body.dark-mode .navbar .nav-link {
    color: rgba(255,255,255,0.8) !important;
}
body.dark-mode .navbar .nav-link:hover,
body.dark-mode .navbar .nav-link.active {
    color: var(--primary-color) !important;
}
body.dark-mode .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%28220, 220, 220, 0.9%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}
body.dark-mode #dark-mode-toggle {
    color: var(--bs-gray-400);
    border-color: var(--bs-gray-400);
}
body.dark-mode #dark-mode-toggle:hover {
    background-color: var(--bs-gray-400);
    color: var(--dark-color);
}

body.dark-mode #home {
    background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('https://via.placeholder.com/1920x1080.png?text=Dark+Hero+Background') no-repeat center center/cover;
    /* Already has dark background fallback */
}
body.dark-mode .section-title h2::after {
    background: var(--primary-color);
}

body.dark-mode #project-filters .btn {
    background-color: var(--bs-gray-700);
    color: var(--text-color);
    border-color: var(--bs-gray-600);
}
body.dark-mode #project-filters .btn.active {
    background-color: var(--primary-color);
    color: #0d1117; /* Dark text on active primary button */
    border-color: var(--primary-color);
}
body.dark-mode #project-filters .btn:not(.active):hover {
    background-color: var(--secondary-color);
    color: #0d1117;
    border-color: var(--secondary-color);
}

body.dark-mode .project-card {
    background-color: var(--card-bg);
    border-color: var(--card-border-color);
}
body.dark-mode .project-card:hover {
    box-shadow: 0 8px 16px rgba(0,0,0,0.25);
}
body.dark-mode .project-card .card-img-top-container {
    background-color: #21262d; /* Darker background for iframe container */
    border-bottom-color: var(--card-border-color);
}

body.dark-mode .project-card .card-title {
    color: var(--text-color);
}

body.dark-mode #about .img-fluid {
    border-color: #30363d; /* Darker border for image */
}

body.dark-mode .social-icons a {
    color: #343a40;
}
body.dark-mode .social-icons a:hover {
    color: var(--primary-color);
}

body.dark-mode #contact .form-control {
    background-color: var(--input-bg);
    color: var(--input-color);
    border-color: var(--input-border-color);
}
body.dark-mode #contact .form-control::placeholder {
    color: var(--bs-gray-600);
}
body.dark-mode #contact .form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(var(--bs-primary-rgb), 0.35); /* Adapted focus shadow */
    background-color: var(--input-bg);
    color: var(--input-color);
}
body.dark-mode #form-status .alert-success {
    background-color: #135232;
    color: #c3e6cb;
    border-color: #1c7447;
}
body.dark-mode #form-status .alert-danger {
    background-color: #58151c;
    color: #f5c6cb;
    border-color: #842029;
}


body.dark-mode footer {
    background-color: #161b22; /* Slightly lighter than body for depth */
    color: var(--text-muted-color);
}
body.dark-mode hr { /* General hr if used */
    border-top-color: #30363d;
}

/* 
============================================================
    DEFINITIVE FIXES FOR TEXT VISIBILITY
============================================================
*/

/* FIX: Ensure heading/subheading are visible in LIGHT MODE */
body:not(.dark-mode) #projects .display-5,
body:not(.dark-mode) #cta .display-5 {
    color: #212529; /* Bootstrap's standard dark color */
}
body:not(.dark-mode) #projects .lead,
body:not(.dark-mode) #cta .lead {
    color: #6c757d; /* Bootstrap's standard secondary color */
}


/* Fix for main section titles and lead paragraphs in DARK MODE */
body.dark-mode .display-5,
body.dark-mode .lead {
    color: var() !important;
}

/* Fix for card description and category text which use ".text-muted" */
body.dark-mode .card .text-muted,
body.dark-mode .card p small {
    color: var(--text-muted-color) !important; /* !important overrides Bootstrap's utility class */
}

/* Ensure skill badges are readable */
body.dark-mode .skills-list .badge.bg-secondary {
    background-color: var(--bs-gray-600) !important;
    color: var(--text-color) !important;
}

body.dark-mode .project-card .tags-container .badge {
    background-color: var(--bs-gray-600) !important;
    color: var(--text-color) !important;
}
/* ============================================================ */


/* --- 8. Transitions & Animations --- */

/* AOS Animation - ensure elements are visible before animating */
[data-aos] {
    opacity: 0;
    transition-property: transform, opacity; /* Add other properties if AOS animates them */
}
[data-aos].aos-animate {
    opacity: 1;
}

/* Responsive iframe scaling is handled by the .project-iframe dimensions and transform.
   No specific media queries added here for it unless explicitly needed. */

/*
  Ensure Bootstrap's focus ring variables are respected for accessibility,
  or define custom ones if needed.
  .form-control:focus {
    box-shadow: 0 0 0 var(--bs-focus-ring-width) var(--bs-focus-ring-color);
  }
*/