/*
|--------------------------------------------------------------------------
| 1. CSS VARIABLES (Design System)
|--------------------------------------------------------------------------
| Defines the core theme colors, sizing, and style properties.
*/

:root {
    /* --- Color Palette --- */
    --bg-dark: #0f172a; 	 	 /* Deep blue/black for depth */
    --bg-light: #1e293b; 	 	 /* Lighter blue for gradient */
    --accent-color: #38bdf8; 	 	 /* Sky Blue for highlights (glows) */
    --text-main: #f8fafc; 	 	 /* Bright white for main text */
    --text-muted: #cbd5e1; 	 	 /* Softer white for paragraphs */
    
    /* --- Modern Card Style (Glassmorphism) --- */
    --card-bg: rgba(255, 255, 255, 0.03); 	 /* Translucent background */
    --card-border: 1px solid rgba(255, 255, 255, 0.1); /* Subtle border */
    --glass-blur: blur(16px); 	 	 	 	 /* Blurs the background behind cards */
    
    /* --- Layout & Typography Variables --- */
    --container-width: 120rem; 
    --header-height: 8rem;
    --font-main: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    --border-radius: 1.5rem;
}

/*
|--------------------------------------------------------------------------
| 2. BASE STYLES & RESETS
|--------------------------------------------------------------------------
| Universal resets, typography settings, and main body styling.
*/

html {
    /* Base font-size for rem units: 1rem = 10px (62.5% of 16px default) */
    font-size: 62.5%; 
    scroll-behavior: smooth;
}

* {
    margin: 0;
    padding: 0;
    /* Forces padding and borders to be included in the element's total width and height */
    box-sizing: border-box;
}

body {
    font-family: var(--font-main);
    color: var(--text-main);
    font-size: 1.6rem;
    
    /* RADIAL GRADIENT: Creates a light source effect */
    background: radial-gradient(circle at top left, var(--bg-light), var(--bg-dark));
    background-attachment: fixed; /* Keeps gradient still while scrolling */
    
    /* Full-page layout setup */
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Base class for blue highlights */
.highlight {
    color: var(--accent-color);
}

/*
|--------------------------------------------------------------------------
| 3. HEADER & NAVIGATION
|--------------------------------------------------------------------------
| Styling for the sticky header, logo, and desktop navigation links.
*/

.portfolio_header {
    /* Glass Header Effect */
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255,255,255,0.05);

    /* Layout */
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: var(--header-height);
    padding: 0 5%;
}

/* LOGO FIX: Makes the square image a glowing circle */
.img_nav {
    width: 7rem; 
    height: 7rem;
    object-fit: cover;
    border-radius: 50%; 
    border: 2px solid var(--accent-color); 
    box-shadow: 0 0 15px rgba(56, 189, 248, 0.5); 
    transition: transform 0.5s ease;
}

.img_nav:hover {
    transform: rotate(360deg); /* Spins on hover */
}

.navigation_list li {
    display: inline-block;
    padding: 0 2rem;
    font-size: 1.7rem;
}

/* FOCUS-VISIBLE ADDED */
.navigation_list li a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.navigation_list li a:hover,
.navigation_list li a:focus-visible { 
    color: var(--accent-color);
}

/*
|--------------------------------------------------------------------------
| 4. MAIN LAYOUT & HERO SECTION
|--------------------------------------------------------------------------
| Container for the main content, introductory hero area, and CTA buttons.
*/

main.container {
    flex: 1; /* Allows container to grow and fill remaining vertical space */
    display: flex;
    flex-direction: column;
    align-items: center;
    
    /* Spacing and width */
    gap: 8rem;
    padding: 5rem 2rem;
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto; /* Center the container */
}

/* Hero Content Wrapper */
.content {
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    width: 100%;
    gap: 6rem;
}

.main_image img {
    width: 32rem;
    height: 32rem;
    object-fit: cover;
    border-radius: 50%;
    /* Profile Picture Glow */
    box-shadow: 0 0 30px rgba(56, 189, 248, 0.15); 
    border: 4px solid rgba(255,255,255,0.1);
}

.main_text {
    width: 50%;
    min-width: 30rem;
    text-align: left;
}

.main_title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.main_text h3 {
    font-size: 2.2rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
    font-weight: 400;
}

.main_paragraph {
    font-size: 1.8rem;
    line-height: 1.8;
    color: var(--text-muted);
}

/* CTA BUTTON STYLES */
.cta_buttons {
    margin-top: 3rem;
    display: flex;
    gap: 2rem;
    flex-wrap: wrap; /* responsive stacking */
}

.btn {
    text-decoration: none;
    font-size: 1.8rem;
    font-weight: 600;
    padding: 1.2rem 3rem;
    border-radius: 0.8rem;
    transition: all 0.3s ease;
    cursor: pointer;
    text-align: center;
}

.primary_btn {
    background-color: var(--accent-color);
    color: var(--bg-dark);
    border: 2px solid var(--accent-color);
    box-shadow: 0 0 15px rgba(56, 189, 248, 0.5); /* Neon glow effect */
}

.primary_btn:hover {
    background-color: #38bdf8e0; /* slight darker shade */
    box-shadow: 0 0 25px var(--accent-color);
}

.secondary_btn {
    background: transparent;
    color: var(--text-main);
    border: 2px solid var(--text-muted);
}

.secondary_btn:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
}


/*
|--------------------------------------------------------------------------
| 5. CARDS & SECTIONS (Glassmorphism)
|--------------------------------------------------------------------------
| Styling for the informational cards, experience list, and technology grid.
*/

.main_content {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 4rem;
    width: 100%;
}

.card {
    /* Glassmorphism Styles */
    background: var(--card-bg);
    border: var(--card-border);
    backdrop-filter: var(--glass-blur);
    box-shadow: 0 10px 30px -10px rgba(0,0,0,0.5);
    
    /* Layout and Spacing */
    padding: 4rem;
    border-radius: var(--border-radius);
    flex: 1;
    min-width: 350px;
    display: flex;
    flex-direction: column;
    align-items: center;
    
    /* Interaction */
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.card:hover {
    transform: translateY(-5px); /* Floating effect */
    border-color: var(--accent-color);
}

.card h3 {
    font-size: 2.4rem;
    color: var(--accent-color);
    margin-bottom: 2rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    padding-bottom: 1rem;
    text-align: center;
    width: 100%;
}

/* Experience List */
.experience ul {
    list-style: none;
    width: 100%;
}

.experience li {
    font-size: 2rem; /* Big readable text */
    padding: 1.5rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    line-height: 1.5;
}

.experience li:last-child {
    border-bottom: none;
}

.experience li strong {
    color: var(--text-main);
    display: inline-block;
    min-width: 60px;
}

/* SOFT SKILLS LIST */
.soft_skills_list {
    list-style: none;
    width: 100%;
    padding-top: 1rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.soft_skills_list li {
    font-size: 1.8rem;
    display: flex;
    align-items: center;
    color: var(--text-muted);
}

.soft_skills_list li strong {
    color: var(--text-main); /* Highlight headings within the list */
    margin-right: 0.5rem;
}

.soft_skills_list li i {
    color: var(--accent-color);
    font-size: 2.2rem;
    margin-right: 1.5rem;
}


/* Technologies Grid */
.icon-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem; /* Reduced gap for better fit with text */
    justify-items: center;
    padding-top: 1rem;
}

/* Updated Tech Item Styling */
.tech-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.tech-item span {
    margin-top: 0.5rem; 
    font-size: 1.4rem; 
    color: var(--text-muted);
    font-weight: 400;
    transition: color 0.3s;
}

.tech-item:hover span {
    color: var(--accent-color);
}

.icon {
    font-size: 6rem; 
    color: var(--text-muted);
    transition: all 0.3s;
}

.icon:hover {
    color: var(--accent-color);
    transform: scale(1.1);
    filter: drop-shadow(0 0 15px var(--accent-color));
}

/*
|--------------------------------------------------------------------------
| 6. PROJECTS SECTION
|--------------------------------------------------------------------------
| Styling for the project display area and new details section.
*/

.projects {
    width: 100%;
    text-align: center;
    padding-top: 4rem;
}

.projects h2 {
    font-size: 2.8rem;
    margin-bottom: 3rem;
    color: var(--text-main);
}

.projects_photos {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 4rem;
}

.projects_photos .card {
    padding: 0; /* Remove padding for flush image/details */
    overflow: hidden;
    min-width: 300px;
    max-width: 500px;
    display: flex; /* Ensure image and info stack */
    flex-direction: column;
}

.projects_photos .card img {
    width: 100%;
    height: 30rem;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.projects_photos .card:hover img {
    transform: scale(1.05);
}

/* NEW: PROJECT INFO STYLES */
.project_info {
    padding: 2rem 3rem;
    text-align: left;
    background-color: var(--bg-dark); 
    border-top: 1px solid rgba(255,255,255,0.05);
    flex-grow: 1; /* Ensures info area fills remaining card height */
}

.project_info h4 {
    font-size: 2.2rem;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

.project_info p {
    font-size: 1.6rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.tech_stack {
    margin-top: 1.5rem;
    font-weight: 500;
}

.project_links {
    display: flex;
    gap: 1.5rem;
    margin-top: 1.5rem;
}

/* Adjust button size for project cards */
.btn-small {
    padding: 0.8rem 2rem;
    font-size: 1.6rem;
    flex-grow: 1; /* Makes buttons share the width */
}


/*
|--------------------------------------------------------------------------
| 7. CONTACT & FOOTER
|--------------------------------------------------------------------------
| Styling for the contact links and site footer.
*/

.contact {
    margin-top: 2rem;
    text-align: center;
}

.contact_title {
    font-size: 2.8rem;
    margin-bottom: 3rem;
    color: var(--text-main);
}

.socialmedia_icons {
    display: flex;
    justify-content: center;
    gap: 3rem;
}

/* FOCUS-VISIBLE ADDED */
.contact_icon {
    color: var(--text-muted);
    font-size: 3.5rem;
    transition: all 0.3s;
}

.contact_icon:hover,
.contact_icon:focus-visible { 
    color: var(--accent-color);
    transform: translateY(-5px);
}

.portfolio_footer {
    text-align: center;
    padding: 3rem 0;
    color: var(--text-muted);
    font-size: 1.4rem;
    border-top: 1px solid rgba(255,255,255,0.05);
    margin-top: auto; /* Pushes footer to the bottom */
}

/*
|--------------------------------------------------------------------------
| 8. MOBILE RESPONSIVENESS
|--------------------------------------------------------------------------
| Media query to adjust layout for smaller screens (max-width: 768px).
*/

/* Hidden by default on desktop, shown on mobile */
.responsive_navigation { 
    display: none; 
}

@media only screen and (max-width: 768px) {
    /* 1. Main Layout & Spacing */
    main.container {
        padding: 2rem 1.5rem; 
        gap: 4rem; 
    }

    .content {
        flex-direction: column;
        align-items: center;
        gap: 3rem;
    }
    
    .main_text {
        width: 100%;
        text-align: center;
        min-width: auto;
        /* Centering for CTA buttons */
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    .cta_buttons {
        justify-content: center;
    }

    .main_title {
        font-size: 2.8rem;
    }

    .main_image img {
        width: 20rem;
        height: 20rem;
    }

    .main_content {
        flex-direction: column;
        gap: 3rem;
    }
    
    .card {
        width: 100%;
        min-width: auto;
        padding: 2.5rem;
    }

    .icon-grid {
        grid-template-columns: repeat(2, 1fr); 
        gap: 3rem;
    }
    
    .icon {
        font-size: 5rem;
    }

    .projects_photos {
        flex-direction: column;
        gap: 3rem;
    }
    
    .projects_photos .card {
        max-width: 100%;
    }

    .projects_photos .card img {
        height: 20rem; /* Smaller height on mobile devices */
    }
    
    /* Project links stacking on tiny screens */
    .project_links {
        flex-direction: column;
        gap: 1rem;
    }
    .btn-small {
        width: 100%;
    }

    .portfolio_header {
        padding: 0 2rem;
        position: relative;
    }

    .responsive_navigation {
        display: block;
        /* Position burger icon on the right */
        position: absolute; 
        right: 2rem; 
        top: 50%; 
        transform: translateY(-50%); /* Perfect center alignment */
        
        font-size: 2.5rem;
        cursor: pointer;
        color: var(--text-main);
    }

    /* Hide desktop navigation list */
    .navigation_list {
        display: none;
        flex-direction: column;
        position: absolute;
        top: var(--header-height); /* Starts below the header */
        right: 0;
        width: 100%;
        background-color: var(--bg-dark);
        border-bottom: 1px solid rgba(255,255,255,0.1);
        text-align: center;
        padding: 2rem 0;
        box-shadow: 0 10px 20px rgba(0,0,0,0.5);
    }

    .navigation_list li {
        display: block;
        margin: 2rem 0;
    }

    /* JavaScript-driven class to show the menu */
    .navigation_list.active {
        display: flex;
    }
}