/* Preloader Styles */
#preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--md-sys-color-background, #ddead1); /* Uses theme background */
    display: flex;
    flex-direction: column; /* Add this line */
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease;
}

#percentage {
    font-family: 'Courier New', Courier, monospace; /* Retro font */
    font-size: 3rem;
    color: var(--md-sys-color-primary, #4b6043); /* Uses theme primary color */
    font-weight: bold;
}

#preloader.loaded {
    opacity: 0;
    pointer-events: none; /* Make it unclickable when invisible */
}

/* Entrance Animation Styles */
header, main {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

header.visible, main.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger the animation for header and main */
main.visible {
    transition-delay: 0.2s;
}

/* New Progress Bar Styles */
#preloader .progress-bar-container {
    width: 250px;
    height: 20px;
    border: 2px solid var(--md-sys-color-primary, #4b6043);
    margin-top: 20px;
    border-radius: 15px / 50%; /* Creates a slightly irregular, hand-drawn look */
    padding: 2px;
    box-shadow: 1px 1px 0px 0px rgba(0,0,0,0.1);
}

#preloader .progress-bar-fill {
    width: 0%;
    height: 100%;
    background-color: var(--md-sys-color-primary, #4b6043);
    border-radius: 10px / 50%;
    /* This creates the sketchy, filled-in look */
    background-image: linear-gradient(45deg, rgba(0,0,0,0.1) 25%, transparent 25%, transparent 50%, rgba(0,0,0,0.1) 50%, rgba(0,0,0,0.1) 75%, transparent 75%, transparent);
    background-size: 20px 20px;
    transition: width 0.1s linear; /* Smooth fill animation */
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-body);
    background-color: var(--md-sys-color-background);
    color: var(--md-sys-color-on-background);
    line-height: 1.6;
    overflow-x: hidden; /* Prevent horizontal scroll */
    position: relative;
    background-image: linear-gradient(to right, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
    background-size: 40px 40px;
}

/* Apply expressive font to all headings */
h1, h2, h3, h4, h5, h6, .navbar .logo {
    font-family: var(--font-family-headline);
    font-weight: 700; /* Bolder weight for headlines */
}






/* Navbar Styling */
header {
    position: relative;
    z-index: 9999;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    background-color: transparent;
    position: sticky;
    top: 0;
    z-index: 10000;
    box-shadow: none;
}

.navbar .logo {
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--md-sys-color-on-surface);
    text-decoration: none;
}

.navbar .nav-links {
    list-style: none;
    display: flex;
}

.navbar .nav-links li {
    margin-left: 2rem;
}

/* Material 3 Navigation Buttons */
.m3-button {
    display: inline-block;
    padding: 8px 16px;
    border-radius: 20px; /* full pill shape */
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    border: 1px solid transparent;
    transition: background-color 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1), transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    text-align: center;
}

/* 1. Filled Button Style (for active links) */
.m3-button--filled {
    background-color: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
    border-color: var(--md-sys-color-primary);
}
.m3-button--filled:hover {
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

/* 2. Tonal Button Style */
.m3-button--tonal {
    background-color: var(--md-sys-color-secondary-container);
    color: var(--md-sys-color-on-secondary-container);
}
.m3-button--tonal:hover {
    background-color: rgba(0,0,0,0.05);
}

/* 3. Elevated Button Style */
.m3-button--elevated {
    background-color: var(--md-sys-color-surface-container-low);
    color: var(--md-sys-color-primary);
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}
.m3-button--elevated:hover {
    box-shadow: 0 2px 6px rgba(0,0,0,0.15);
}

/* 4. Outlined Button Style */
.m3-button--outlined {
    border-color: var(--md-sys-color-outline);
    color: var(--md-sys-color-primary);
}
.m3-button--outlined:hover {
    background-color: rgba(var(--md-sys-color-primary-rgb), 0.08); /* Use an RGB version of your primary color for transparency */
}

/* 5. Text Button Style (Default for inactive links) */
.m3-button--text {
    color: var(--md-sys-color-primary);
}
.m3-button--text:hover {
    background-color: rgba(var(--md-sys-color-primary-rgb), 0.08);
}

.m3-button:active {
    transform: scale(0.97);
}

.hamburger-menu {
    display: none;
}



/* Hero Section */
.hero {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 90vh;
    padding: 2rem 5%;
    gap: 3rem;
    flex-wrap: wrap; /* Allow wrapping on smaller screens */
}

.hero-content {
    flex: 1;
    min-width: unset;
    text-align: left;
    background-color: var(--md-sys-color-surface);
    padding: 2rem;
    border-radius: 12px;
    position: relative;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.hero-content::before {
    content: '';
    position: absolute;
    top: 1.5rem;
    left: 1.5rem;
    width: 100px;
    height: 4px;
    background-color: var(--md-sys-color-primary);
    border-radius: 2px;
}

.hero-content::after {
    content: '';
    position: absolute;
    bottom: 1.5rem;
    right: 1.5rem;
    width: 100px;
    height: 4px;
    background-color: var(--md-sys-color-primary);
    border-radius: 2px;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 0.5rem;
    color: var(--md-sys-color-on-background);
}

.hero-content h1 span {
    color: var(--md-sys-color-primary);
}

.hero-content h2 {
    font-size: 2rem;
    color: var(--md-sys-color-primary);
    margin-bottom: 1.5rem;
}

.hero-content p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.hero-image-placeholder {
    width: 300px; /* Adjust size as needed */
    height: 300px;
    background-color: var(--md-sys-color-primary); /* Placeholder color, can be removed if image always present */
    border-radius: 50%; /* Make the shape a perfect circle */
    display: flex;
    justify-content: center;
    align-items: center;
    /* Removed text-specific styling: color, font-size, font-weight */
    overflow: hidden; /* Hide any overflow if an image is placed */
    box-shadow: 0 0 25px var(--md-sys-color-primary-container);
}



.btn {
    display: inline-block;
    background-color: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
    padding: 0.8rem 2rem;
    border-radius: 5px;
    text-decoration: none;
    font-size: 1.1rem;
    transition: background-color 0.3s ease, transform 0.2s ease;
    border: none;
    cursor: pointer;
}

.btn:hover {
    background-color: var(--md-sys-color-primary-container);
    transform: translateY(-2px);
}

/* General Section Styling */
section {
    padding: 4rem 5%;
    background-color: transparent;
    border-radius: 16px;
    box-shadow: none;
}

section h2 {
    font-size: 2.5rem;
    color: var(--md-sys-color-primary);
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
}

section h2::after {
    content: '';
    width: 80px;
    height: 4px;
    background-color: var(--md-sys-color-primary);
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 2px;
}

/* About Section */
.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    background-color: var(--md-sys-color-surface);
    padding: 2rem;
    border-radius: 12px;
    position: relative;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--md-sys-color-outline); /* Add M3 outline */
}

.about-content::before {
    content: '';
    position: absolute;
    top: 1.5rem;
    left: 1.5rem;
    width: 100px;
    height: 4px;
    background-color: var(--md-sys-color-primary);
    border-radius: 2px;
}

.about-content::after {
    content: '';
    position: absolute;
    bottom: 1.5rem;
    right: 1.5rem;
    width: 100px;
    height: 4px;
    background-color: var(--md-sys-color-primary);
    border-radius: 2px;
}

.about-content h3 {
    font-size: 1.8rem;
    color: var(--md-sys-color-on-surface);
    margin-bottom: 1.5rem;
}

.about-content p {
    font-size: 1.1rem;
    color: var(--md-sys-color-on-surface-variant);
}

/* Certifications Section */
.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.certification-card {
    background-color: var(--md-sys-color-surface); /* Use the main surface color */
    padding: 1.5rem;
    border-radius: 12px; /* M3 Medium corner radius */
    border: 1px solid var(--md-sys-color-outline); /* Add M3 outline */
    text-align: center;
    transition: background-color 0.3s cubic-bezier(0.4, 0, 0.2, 1), transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.certification-card:hover {
    background-color: var(--md-sys-color-surface-container-low);
    transform: translateY(-4px); /* Add this line to lift the card on hover */
    box-shadow: none; /* Remove the old glow/shadow effect */
}

.certification-card h3 {
    font-size: 1.3rem;
    color: var(--md-sys-color-on-surface);
    margin-bottom: 0.5rem;
}

.certification-card p {
    font-size: 0.95rem;
    color: var(--md-sys-color-on-surface-variant);
}

.certification-card-link {
    display: block;
    text-decoration: none;
    color: inherit;
}

/* Notes Page Specific Styling */
.notes-container {
    max-width: 900px;
    margin: 2rem auto;
    padding: 2rem;
    background-color: var(--md-sys-color-surface);
    border-radius: 8px;
}

.notes-container h1 {
    font-size: 3rem;
    color: var(--md-sys-color-primary);
    text-align: center;
    margin-bottom: 3rem;
}

.notes-section {
    margin-bottom: 3rem;
    border-radius: 8px;
}

.notes-section h2 {
    font-size: 2rem;
    color: var(--md-sys-color-on-surface);
    margin-bottom: 1rem;
    text-align: left;
}

.notes-section p {
    font-size: 1.1rem;
    color: var(--md-sys-color-on-surface-variant);
}


/* Responsive Design */
@media (max-width: 768px) {
    .navbar {
        flex-direction: row; /* Keep logo and hamburger on one line */
        justify-content: space-between;
    }

    /* --- Full-Screen Overlay Menu --- */

    .navbar .nav-menu {
        position: fixed; /* Covers the entire screen */
        top: 0;
        left: 0;
        width: 100vw;
        height: 100vh;
        background-color: var(--md-sys-color-surface-container-high); /* Lighter background */
        z-index: 99999; /* Extremely high z-index */
        
        /* Center the links */
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;

        /* Hide it by default */
        transform: translateY(-100%); /* Open from top */
        visibility: hidden;
        transition: transform 0.5s cubic-bezier(0.7, 0, 0.3, 1), visibility 0.5s; /* Slower transition */
    }

    .navbar .nav-menu.active {
        transform: translateY(0); /* Open from top */
        visibility: visible;
    }

    /* Adjust nav links for the overlay */
    .navbar .nav-links {
        flex-direction: column;
        text-align: center;
    }

    .navbar .nav-links li {
        margin: 1rem 0; /* Reduced spacing */
    }
    
    .navbar .nav-links a {
        font-size: 1.5rem; /* Slightly smaller links */
        color: var(--md-sys-color-on-surface); /* Darker text color */
    }

    /* --- Hamburger Icon Styling --- */
    
    .hamburger-menu {
        display: flex; /* Show hamburger icon */
        flex-direction: column;
        justify-content: space-around;
        width: 30px;
        height: 25px;
        cursor: pointer;
        position: relative; /* Needed for z-index to apply */
    }

    .hamburger-menu .bar {
        width: 100%;
        height: 4px; /* Slightly thicker bars */
        background-color: var(--md-sys-color-on-surface-variant); /* Darker color */
        transition: all 0.4s ease; /* Slower transition */
    }

    /* Animate hamburger to an 'X' when active */
    .hamburger-menu.active .bar:nth-child(1) {
        transform: translateY(9px) rotate(45deg); /* Adjust translateY for thicker bars */
    }
    .hamburger-menu.active .bar:nth-child(2) {
        opacity: 0;
    }
    .hamburger-menu.active .bar:nth-child(3) {
        transform: translateY(-9px) rotate(-45deg); /* Adjust translateY for thicker bars */
    }

    /* Hero Section */
    .hero {
        flex-direction: column;
        text-align: center;
        padding: 2rem 2%;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-content h2 {
        font-size: 1.5rem;
    }

    .hero-image-placeholder {
        width: 250px;
        height: 250px;
    }

    .social-icons {
        justify-content: center;
    }

    section {
        padding: 3rem 2%;
    }

    section h2 {
        font-size: 2rem;
    }

    .about-content h3 {
        font-size: 1.5rem;
    }

    .certifications-grid {
        grid-template-columns: 1fr;
    }

    .notes-container {
        padding: 1.5rem;
    }

    .notes-container h1 {
        font-size: 2.5rem;
    }

    .notes-section h2 {
        font-size: 1.5rem;
    }

    .notes-section p {
        font-size: 1rem;
    }

    .hero-content p {
        font-size: 1rem;
    }

    .certification-card h3 {
        font-size: 1.2rem;
    }

    .certification-card p {
        font-size: 0.9rem;
    }

    .notes-container h1 {
        font-size: 2rem;
    }

    .notes-section h2 {
        font-size: 1.3rem;
    }

    .notes-section p {
        font-size: 1rem;
    }

}

@media (max-width: 480px) {
    .navbar .logo {
        font-size: 1.5rem;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-content h2 {
        font-size: 1.2rem;
    }

    .btn {
        padding: 0.6rem 1.5rem;
        font-size: 1rem;
    }

    .social-icons a {
        font-size: 1.5rem;
    }

    section h2 {
        font-size: 1.8rem;
    }

    .notes-container h1 {
        font-size: 2rem;
    }

    .notes-section h2 {
        font-size: 1.3rem;
    }

    .notes-section p {
        font-size: 1rem;
    }
}
/* --- Footer Styling --- */
.site-footer {
    padding: 2rem 5%;
    background-color: var(--md-sys-color-surface-container);
    border-top: 1px solid var(--md-sys-color-outline);
    margin-top: 4rem; /* Add some space above the footer */
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 1rem;
}

.footer-links a {
    text-decoration: none;
    color: var(--md-sys-color-primary);
    font-weight: 500;
    margin: 0 0.75rem;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    text-decoration: underline;
}

.footer-copyright p {
    font-size: 0.9rem;
    color: var(--md-sys-color-on-surface-variant);
}

/* --- Contact Section Styling --- */
.contact-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    background-color: var(--md-sys-color-surface);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--md-sys-color-outline);
}

.contact-content p {
    font-size: 1.1rem;
    color: var(--md-sys-color-on-surface-variant);
}

.contact-linkedin-btn {
    font-size: 1.1rem !important;
    padding: 12px 24px !important;
}

.privacy-link {
    font-size: 0.9rem !important;
    margin-top: 1rem;
}

.privacy-link a {
    color: var(--md-sys-color-primary);
    text-decoration: underline;
}
/* --- Shopping Section Styling --- */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.product-card-link {
    text-decoration: none;
    color: inherit;
}

.product-card {
    background-color: var(--md-sys-color-surface);
    padding: 2rem 1.5rem;
    border-radius: 16px; /* More prominent radius */
    border: 1px solid var(--md-sys-color-outline);
    text-align: center;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
}

.product-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.product-card h3 {
    font-size: 1.4rem;
    color: var(--md-sys-color-on-surface);
    margin-bottom: 1rem;
}

.product-card p {
    font-size: 1rem;
    color: var(--md-sys-color-on-surface-variant);
    flex-grow: 1;
    margin-bottom: 1.5rem;
}

.product-card .product-cta {
    display: inline-block;
    background-color: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
    padding: 10px 20px;
    border-radius: 20px;
    font-weight: 500;
    align-self: center;
}