/* Default: Everforest Light (Soft) */
:root {
    --bg-color: #E5DFC5;        /* (bg_dim from light image) */
    --text-color: #5C6A72;    /* (fg from light image) */
    --card-bg: #EAE4CA;       /* (bg1 from light image) */
    --heading-color: #5C6A72;   /* (fg from light image) */
    --accent-color: #8DA101;    /* (green from light image) */
    --accent-color-2: #DFA000;  /* (yellow from light image) */
    --border-color: #D8D3BA;    /* (bg4 from light image) */
    
    --transition-speed: 0.3s ease;
    --border-radius: 8px;
}

/* Alternative: Everforest Dark (Soft) */
[data-theme="dark"] {
    --bg-color: #293136;        /* (bg_dim from dark image) */
    --text-color: #D3C6AA;    /* (fg from dark image) */
    --card-bg: #3A464C;       /* (bg1 from dark image) */
    --heading-color: #D3C6AA;   /* (fg from dark image) */
    --accent-color: #A7C080;    /* (green from dark image) */
    --accent-color-2: #DBBC7F;  /* (yellow from dark image) */
    --border-color: #555F66;    /* (bg4 from dark image) */
}

/* 2. Global Reset and Body Styling */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

h1, h2, h3 {
    color: var(--heading-color);
    margin-bottom: 1rem;
}

main {
    /* Add max-width to keep content centered and readable */
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* 3. Section Layouts */

/* --- Hamburger Menu Styles --- */
#hamburger-btn {
    display: none; /* Hidden on desktop */
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.5rem;
    cursor: pointer;
}

.nav-container {
    display: flex; /* On desktop, just show everything in a row */
    align-items: center;
    gap: 1.5rem;
}

.logo-box {
    border: 2px solid var(--heading-color);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    transition: all var(--transition-speed);
}
.logo-box:hover {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    color: var(--bg-color);
}

/* --- Navbar --- */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: background-color var(--transition-speed);
}

.navbar .logo a {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--heading-color);
    text-decoration: none;
}

.nav-links a {
    margin: 0 1rem;
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-speed);
}
.nav-links a:hover {
    color: var(--accent-color);
}

#theme-toggle-btn {
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.25rem;
    cursor: pointer;
    transition: color var(--transition-speed);
}
#theme-toggle-btn:hover {
    color: var(--accent-color);
}

/* --- Hero Section (Split Grid) --- */
.hero-section {
    padding: 4rem 0;
    min-height: 80vh;
    /* We can also center the text if you like */
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.hero-text h1 {
    font-size: 3rem;
}

.hero-contact {
    margin-top: 1.5rem;
}

.hero-contact a {
    color: var(--text-color);
    font-size: 2rem;
    margin-right: 1.5rem;
    transition: color var(--transition-speed);
}
.hero-contact a:hover {
    color: var(--accent-color);
}

/* --- Career Section (Tabs) --- */
.tab-buttons {
    margin-bottom: 1.5rem;
    border-bottom: 2px solid var(--border-color);
}

.tab-btn {
    background: none;
    border: none;
    padding: 1rem 1.5rem;
    font-size: 1.1rem;
    color: var(--text-color);
    cursor: pointer;
    transition: all var(--transition-speed);
}

.tab-btn.active {
    color: var(--accent-color);
    border-bottom: 2px solid var(--accent-color);
}

.tab-panel {
    display: none; /* Hidden by default */
}

.tab-panel.active {
    display: block; /* Shown when active */
}

.card {
    background-color: var(--card-bg);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    border: 1px solid var(--border-color);
}

/* --- Projects Section --- */
.projects-section {
    padding-top: 2rem;
}

.projects-container {
    display: grid;
    /* Creates a responsive grid of columns (min 300px, max 1fr) */
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.project-card {
    background-color: var(--card-bg);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    text-decoration: none; /* Removes underline from the link */
    color: var(--text-color);
    display: flex; /* Helps with a clean footer */
    flex-direction: column;
    justify-content: space-between;
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* Dark mode shadow */
[data-theme="dark"] .project-card:hover {
     box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.project-card h3 {
    color: var(--accent-color);
    margin-bottom: 0.75rem;
    text-transform: capitalize; /* Cleans up repo names */
}

.project-card p {
    margin-bottom: 1rem;
    flex-grow: 1; /* Pushes footer to the bottom */
}

.project-footer {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    color: var(--accent-color-2);
}

/* --- Styling for Card Content --- */
.card h4 {
    color: var(--heading-color);
    font-size: 1.25rem;
    margin-bottom: 0.25rem;
}

.card .card-subtitle {
    font-size: 0.9rem;
    font-weight: bold;
    color: var(--accent-color-2);
    margin-bottom: 1rem;
}

.card ul {
    /* Resets default browser list styling */
    list-style-type: disc; /* Use a standard disc bullet */
    padding-left: 20px; /* Indent the bullet points */
    margin-top: 1rem;
}

.card ul li {
    margin-bottom: 0.5rem; /* Space between bullet points */
}

.card p {
    margin-bottom: 0.5rem;
}

/* --- Skills Section --- */
.skills-section {
    padding-top: 2rem; /* Add some space above */
}

.skill-group {
    margin-bottom: 2.5rem; /* Space between skill groups */
}

.skill-group h4 {
    /* Use the secondary accent color for subheadings */
    color: var(--accent-color-2); 
    font-size: 1.25rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.skills-grid {
    display: grid;
    /* Responsive grid: items are at least 120px wide */
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
}

.skill-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1rem;
    text-align: center;
    font-weight: 500;
    transition: transform var(--transition-speed), background-color var(--transition-speed), color var(--transition-speed);
}

.skill-card:hover {
    transform: translateY(-3px);
    background-color: var(--accent-color);
}

/* On hover, change text color for better contrast */
[data-theme="light"] .skill-card:hover {
    color: #ffffff; /* Use pure white on the light-theme accent */
}

[data-theme="dark"] .skill-card:hover {
     color: var(--bg-color); /* Use the dark bg color on the dark-theme accent */
}

/* --- Certificates Section --- */
.certs-grid {
    display: grid;
    /* Responsive grid, 2-3 columns */
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.cert-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    text-align: center;
    display: flex; /* Helps align content */
    flex-direction: column;
    justify-content: space-between; /* Pushes info to the bottom */
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

.cert-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .cert-card:hover {
     box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.cert-card a {
    display: block;
    margin-bottom: 1rem;
    flex-grow: 1; /* Allows image to fill space */
    display: flex;
    align-items: center;
    justify-content: center;
}

.cert-card img {
    /* Ensure images are responsive and don't overflow */
    max-width: 100%;
    height: auto;
    /* Give all certs a consistent max height */
    max-height: 200px; 
    object-fit: contain; /* Don't stretch images */
    border-radius: 4px; 
}

.cert-info {
    margin-top: 1rem;
    line-height: 1.4;
}

.cert-info strong {
    color: var(--heading-color);
    font-size: 1.1rem;
}

/* --- Responsive (Mobile) --- */
@media (max-width: 768px) {

    .navbar {
        padding: 1rem; 
    }
    #hamburger-btn {
        display: block; /* Show hamburger on mobile */
        z-index: 1001; /* Make sure it's above the slide-down menu */
    }
    .nav-container {
        /* This is the slide-down menu */
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        
        background-color: var(--card-bg);
        border-bottom: 1px solid var(--border-color);
        padding: 6rem 1rem 2rem 1rem; /* Add padding for links */

        /* Stack items vertically */
        flex-direction: column; 
        align-items: center;
        gap: 1.5rem;

        /* Hide it by default */
        opacity: 0;
        visibility: hidden;
        transform: translateY(-100%);
        transition: transform var(--transition-speed), opacity var(--transition-speed), visibility var(--transition-speed);
    }

    .nav-container.active {
        /* Show it when active */
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
    
    /* ADD THIS BLOCK in its place */
.nav-links {
    flex-direction: column; /* Stack links */
    align-items: stretch; /* Make children fill the width */
    gap: 1rem; /* Slightly smaller gap between buttons */
    width: 90%; /* Make the link container not touch the screen edges */
}

.nav-links a {
    font-size: 1.1rem; 
    font-weight: 500;
    margin: 0; 
    padding: 0.75rem; /* Add padding to make it "button-like" */
    text-align: center;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color); /* Add a border */
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

.nav-links a:hover {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
}

/* Add hover text color rules separately */
[data-theme="light"] .nav-links a:hover {
    color: #ffffff;
}
[data-theme="dark"] .nav-links a:hover {
    color: var(--bg-color);
}

    /* --- Hero Section Fix --- */
    .hero-section {
        display: block; 
        text-align: center;
        min-height: auto; 
        padding: 2rem 0 4rem 0; 
    }
    
    .hero-contact {
        display: flex; 
        justify-content: center;
    }
    
    .hero-text h1 {
        font-size: 2.5rem; 
    }
}