/* ===================================
   RESET & COLOR VARIABLES
   =================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    
    /* COLORS */
    --text: #333;
    --bg1: #f5f5f5;
    --bg2: #ffffff;
    --h1-bg: #f5f5f5;
    --h1-text: #333;
    --border: #333;
    --link: #333;
    --underline: #999;
}

@media (prefers-color-scheme: dark) {
    * {
        --text: #DADADB;
        --bg1: #444;
        --bg2: #333;
        --h1-bg: #272727;
        --h1-text: #DADADB;
        --border: #000;
        --link: #DADADB;
        --underline: #888;
    }
}

/* ===================================
   FONT SETUP
   =================================== */

:root {
    --header: system-ui, -apple-system, sans-serif;
    --body: system-ui, -apple-system, sans-serif;
    --border-style: 1px solid var(--border);
    --drop-shadow-style: drop-shadow(.3rem .3rem 0rem var(--border));
    --h1-letter-spacing: .5px;
    --h1-weight: normal;
}

/* ===================================
   BASE STYLES
   =================================== */

body {
    position: relative;
    margin: 0 auto;
    font-size: 17px;
    font-family: var(--body);
    line-height: 1.4;
    color: var(--text);
    background: var(--bg1);
    min-height: 100vh;
    /* Dotted background pattern */
    background-image: 
        radial-gradient(circle, var(--border) 1px, transparent 1px);
    background-size: 20px 20px;
    background-attachment: fixed;
}

main {
    position: relative;
    max-width: 56rem;
    margin: 0 auto;
}

/* ===================================
   TYPOGRAPHY
   =================================== */

h1, h2, h3 {
    font-family: var(--header);
    letter-spacing: var(--h1-letter-spacing);
    font-weight: var(--h1-weight);
}

a {
    text-decoration: underline;
    color: var(--link);
    text-decoration-color: var(--underline);
}

a:hover {
    text-decoration: underline;
}

p {
    margin-top: .75em;
}

strong {
    color: var(--text);
    font-family: var(--header);
    letter-spacing: var(--h1-letter-spacing);
    font-weight: normal; 
}

ul, ol {
    margin-bottom: 0em;
    padding-left: 2ch;
}

li {
    margin-bottom: .35em;
}

li:last-of-type {
    margin-bottom: 0em;
}

time {
    font-size: .95rem;
    color: var(--underline);
}

small {
    font-size: .85em;
}

::-moz-selection {
    color: var(--bg2);
    background: var(--text);
}

::selection {
    color: var(--bg2);
    background: var(--text);
}

/* ===================================
   HEADER & NAVIGATION
   =================================== */

#header {
    width: 100%;
    z-index: 99;
    position: fixed;
    top: 0;
    background-color: var(--h1-bg);
    border-bottom: var(--border-style);
    font-family: var(--header);
    font-size: .85rem;
    line-height: 1.8em;
    letter-spacing: var(--h1-letter-spacing);
}

.header-container {
    max-width: 56rem;
    margin: 0 auto;
    padding: .25rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1em;
    text-decoration: none;
    font-weight: var(--h1-weight);
}

.nav-links {
    display: flex;
    gap: 1.5rem;
}

.nav-links a {
    text-decoration: none;
    transition: none;
}

.nav-links a:hover,
.nav-links a.active {
    text-decoration: underline;
    text-decoration-color: var(--link);
    text-underline-offset: .15em;
    text-decoration-thickness: 1px;
}

.mobile-menu-btn {
    display: none;
    cursor: pointer;
    font-size: 1.2rem;
}

/* ===================================
   BOX SYSTEM
   =================================== */

.box {
    font-size: 1em;
    padding: 1rem;
    margin-bottom: 1rem; /* CHANGED: Reduced spacing */
    background: var(--bg2);
    border: var(--border-style);
    filter: var(--drop-shadow-style);
}

.box h1, .box h2, .box h3 {
    font-size: 1.15rem;
    margin: -1rem -1rem .75rem -1rem;
    padding: .55rem 1rem;
    border-bottom: var(--border-style);
    background: var(--h1-bg);
    color: var(--h1-text);
}

.box-alone h1,
.box-alone h2,
.box-alone h3 {
    margin: -.55rem -1rem -.55rem -1rem;
    border: 0px;
}

/* ===================================
   FLEX SYSTEM
   =================================== */

.flex {
    display: flex;
    flex-wrap: wrap;
    column-gap: 1rem; /* CHANGED: Reduced spacing */
    width: 100%;
}

.flex-item {
    flex: 1 1 15rem;
}

.flex-unequal {
    display: flex;
    flex-wrap: wrap;
    column-gap: 1rem; /* CHANGED: Reduced spacing */
}

.flex-item-unequal {
    flex: 1 1 fit-content;
    min-width: 15rem;
}

@media only screen and (max-width: 680px) {
    .flex-unequal { 
        flex-wrap: wrap; 
    }
    .flex-item-unequal {
        min-width: 100%;
    }
}

/* ===================================
   SECTIONS
   =================================== */

.section {
    padding: 5rem 5vw;
    max-width: 56rem;
    margin: 0 auto;
}

.section:first-of-type {
    padding-top: calc(4.7rem + 5rem);
}

.section-title {
    /* Styles for Section Title as a Box - ADDED/CHANGED */
    font-size: 1em;
    padding: 1rem;
    margin-bottom: 2rem; 
    background: var(--bg2);
    border: var(--border-style);
    filter: var(--drop-shadow-style);
    
    /* Centering the Box - ADDED */
    max-width: fit-content;
    margin-left: auto;
    margin-right: auto;
}

.section-title h2 {
    font-size: 1.5rem;
    letter-spacing: var(--h1-letter-spacing);
    /* Reset h2 styles to look good inside the box - CHANGED */
    margin: 0;
    padding: 0;
    border-bottom: none;
    background: none;
    color: var(--text);
}

/* ===================================
   HERO SECTION
   =================================== */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center; /* ADDED: To center content horizontally */
    padding-top: calc(4.7rem + 2rem);
}

.hero-content {
    width: 100%;
    max-width: 56rem; /* ADDED: To constrain content width for centering */
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: .5rem;
}

.hero h2 {
    font-size: 1.5rem;
    color: var(--underline);
    margin-bottom: 1rem;
}

.hero p {
    max-width: 45ch;
    margin-bottom: 2rem;
}

.hero .btn {
    margin-right: 1rem;
    margin-bottom: 1rem;
}

.flex-unequal {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.social-links a {
    font-size: 1.5rem;
    text-decoration: none;
}

.social-links a:hover {
    color: var(--underline);
}

/* ===================================
   BUTTONS
   =================================== */

.btn {
    display: inline-block;
    padding: .75rem 1.5rem;
    background: var(--bg2);
    border: var(--border-style);
    color: var(--text);
    text-decoration: none;
    font-family: var(--header);
    letter-spacing: var(--h1-letter-spacing);
    filter: var(--drop-shadow-style);
    transition: none;
}

.btn:hover {
    transform: translate(.1rem, .1rem);
    filter: drop-shadow(.2rem .2rem 0rem var(--border));
}

.btn-secondary {
    background: var(--h1-bg);
}

/* ===================================
   ABOUT SECTION
   =================================== */

.about-content {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem; /* CHANGED: Reduced spacing */
    align-items: flex-start;
}

.about-image {
    flex: 0 0 250px;
    padding: 1rem;
    background: var(--bg2);
    border: var(--border-style);
    filter: var(--drop-shadow-style);
}

.about-image img {
    width: 100%;
    border: var(--border-style);
}

.about-text {
    flex: 1 1 20rem;
    min-width: 20rem;
}

.about-text h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.about-text .btn {
    margin-top: 1rem;
}

@media only screen and (max-width: 680px) {
    .about-content {
        flex-direction: column;
    }
    .about-image {
        flex: 0 0 auto;
        width: 100%;
        max-width: 300px;
        margin: 0 auto;
    }
    .about-text {
        min-width: 100%;
    }
}

/* ===================================
   SKILLS SECTION
   =================================== */

.skills-container {
    display: flex;
    flex-direction: column;
    gap: 1rem; /* CHANGED: Reduced spacing */
}

.skill-category {
    padding: 1rem;
    background: var(--bg2);
    border: var(--border-style);
    filter: var(--drop-shadow-style);
}

.skill-category h3 {
    font-size: 1.15rem;
    margin: -1rem -1rem .75rem -1rem;
    padding: .55rem 1rem;
    border-bottom: var(--border-style);
    background: var(--h1-bg);
}

.skill-icons {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    padding: 1rem 0;
}

.skill-icon {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: .5rem;
    flex: 0 0 80px;
}

.skill-icon i {
    font-size: 2.5rem;
}

.skill-icon span {
    font-size: .85rem;
    text-align: center;
}

/* ===================================
   PROJECTS SECTION
   =================================== */

.projects-grid {
    display: flex;
    flex-wrap: wrap;
    column-gap: 1rem; /* CHANGED: Reduced spacing */
    row-gap: 1rem; /* CHANGED: Reduced spacing */
}

.project-card {
    background: var(--bg2);
    border: var(--border-style);
    filter: var(--drop-shadow-style);
    transition: opacity .3s, transform .3s;
    flex: 1 1 15rem;
    min-width: 15rem;
}

.project-image {
    overflow: hidden;
    border-bottom: var(--border-style);
}

.project-image img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
}

.project-content {
    padding: 1rem;
}

.project-content h3 {
    font-size: 1.15rem;
    margin-bottom: .5rem;
}

.project-content p {
    margin: .5rem 0;
    font-size: .95rem;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: .5rem;
    margin: 1rem 0;
}

.project-tag {
    padding: .25rem .75rem;
    background: var(--h1-bg);
    border: var(--border-style);
    font-size: .85rem;
    font-family: var(--header);
    letter-spacing: var(--h1-letter-spacing);
}

.project-links {
    display: flex;
    flex-wrap: wrap;
    gap: .75rem;
    margin-top: 1rem;
}

.project-links a {
    padding: .5rem 1rem;
    background: var(--h1-bg);
    border: var(--border-style);
    text-decoration: none;
    font-size: .85rem;
    font-family: var(--header);
    letter-spacing: var(--h1-letter-spacing);
}

.project-links a:hover {
    transform: translate(.05rem, .05rem);
}

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

@media only screen and (max-width: 680px) {
    .projects-grid {
        flex-direction: column;
    }
    .project-card {
        min-width: 100%;
    }
}

/* ===================================
   FILTER BUTTONS
   =================================== */

.filter-container {
    margin-bottom: 2rem;
}

.filter-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: .75rem;
    justify-content: center;
}

.filter-button {
    padding: .5rem 1rem;
    background: var(--bg2);
    border: var(--border-style);
    color: var(--text);
    font-family: var(--header);
    letter-spacing: var(--h1-letter-spacing);
    cursor: pointer;
    transition: none;
    filter: var(--drop-shadow-style);
}

.filter-button:hover,
.filter-button.active {
    background: var(--h1-bg);
}

/* ===================================
   CERTIFICATES SECTION
   =================================== */

.certificates-grid {
    /* Use display flex to arrange the boxed certificates */
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center; /* Centers the certificates within the new parent box */
}

/* Styles applied to the individual certificate wrapper (must be used in HTML) */
.certificate-box {
    padding: 0.5rem;
    
    line-height: 0; 
    max-width: 15rem; 
    
    /* Keep the default boxed style */
    border: var(--border-style);
    background: var(--bg1);
    filter: var(--drop-shadow-style);
    /* REMOVED: transition property */
}

/* REMOVED: .certificate-box:hover styles */

.certificate-box > div {
    display: block; 
}

/* ===================================
   CONTACT SECTION
   =================================== */

.contact-content {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem; /* CHANGED: Reduced spacing */
    align-items: flex-start;
}

.contact-info {
    flex: 1 1 20rem;
    min-width: 20rem;
    padding: 1rem;
    background: var(--bg2);
    border: var(--border-style);
    filter: var(--drop-shadow-style);
}

.contact-info h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 1rem 0;
}

.contact-item i {
    font-size: 1.25rem;
    width: 30px;
}

.contact-form {
    flex: 1 1 20rem;
    min-width: 20rem;
    padding: 1rem;
    background: var(--bg2);
    border: var(--border-style);
    filter: var(--drop-shadow-style);
}

.form-group {
    margin-bottom: 1rem;
}

.form-control {
    width: 100%;
    padding: .75rem;
    background: var(--bg1);
    border: var(--border-style);
    color: var(--text);
    font-family: var(--body);
    font-size: 1rem;
}

.form-control:focus {
    outline: 2px solid var(--border);
    outline-offset: 2px;
}

textarea.form-control {
    min-height: 150px;
    resize: vertical;
}

@media only screen and (max-width: 680px) {
    .contact-content {
        flex-direction: column;
    }
    .contact-info,
    .contact-form {
        min-width: 100%;
    }
}

/* ===================================
   FOOTER
   =================================== */

footer {
    background: var(--h1-bg);
    border-top: var(--border-style);
    padding: 2rem 5vw;
}

.footer-content {
    max-width: 56rem;
    margin: 0 auto;
    text-align: center;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    justify-content: center;
    margin-bottom: 1rem;
}

.footer-links a {
    text-decoration: none;
    font-family: var(--header);
    letter-spacing: var(--h1-letter-spacing);
}

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

.footer-social {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin: 1rem 0;
}

.footer-social a {
    font-size: 1.5rem;
    text-decoration: none;
}

.footer-social a:hover {
    color: var(--underline);
}

.copyright {
    margin-top: 1rem;
    font-size: .85rem;
    color: var(--underline);
}

/* ===================================
   BACK TO TOP BUTTON
   =================================== */

.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--bg2);
    border: var(--border-style);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    filter: var(--drop-shadow-style);
    opacity: 0;
    pointer-events: none;
    transition: opacity .3s;
}

.back-to-top.show {
    opacity: 1;
    pointer-events: auto;
}

.back-to-top:hover {
    transform: translate(.1rem, .1rem);
    filter: drop-shadow(.2rem .2rem 0rem var(--border));
}

/* ===================================
   PAGE HEADER (for subpages)
   =================================== */

.page-header {
    padding: calc(4.7rem + 3rem) 5vw 3rem;
    text-align: center;
    background: var(--bg1);
    border-bottom: var(--border-style);
}

.page-header h1 {
    font-size: 2rem;
    margin-bottom: .5rem;
}

.page-header p {
    color: var(--underline);
}

/* ===================================
   PIXEL ART GALLERY
   =================================== */

.gallery-grid {
    display: flex;
    flex-wrap: wrap;
    column-gap: 1.3rem;
    row-gap: 1.3rem;
}

.art-piece {
    background: var(--bg2);
    border: var(--border-style);
    filter: var(--drop-shadow-style);
    transition: opacity .3s, transform .3s;
    flex: 1 1 15rem;
    min-width: 15rem;
}

.art-image {
    overflow: hidden;
    border-bottom: var(--border-style);
    cursor: pointer;
}

.art-image img {
    width: 100%;
    height: 250px;
    object-fit: contain;
    display: block;
    background: var(--bg1);
    image-rendering: pixelated;
    image-rendering: -moz-crisp-edges;
    image-rendering: crisp-edges;
}

.art-content {
    padding: 1rem;
}

.art-content h3 {
    font-size: 1.15rem;
    margin-bottom: .5rem;
}

.art-content p {
    margin: .5rem 0;
    font-size: .95rem;
}

.art-tags {
    display: flex;
    flex-wrap: wrap;
    gap: .5rem;
    margin: 1rem 0;
}

.art-tag {
    padding: .25rem .75rem;
    background: var(--h1-bg);
    border: var(--border-style);
    font-size: .85rem;
    font-family: var(--header);
    letter-spacing: var(--h1-letter-spacing);
}

.art-meta {
    font-size: .85rem;
    color: var(--underline);
    margin-top: .5rem;
}

@media only screen and (max-width: 680px) {
    .gallery-grid {
        flex-direction: column;
    }
    .art-piece {
        min-width: 100%;
    }
}

/* ===================================
   MODAL
   =================================== */

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-close {
    position: absolute;
    top: 2rem;
    right: 2rem;
    font-size: 3rem;
    color: var(--text);
    cursor: pointer;
    z-index: 1001;
}

.modal-content,
.modal-image {
    max-width: 90%;
    max-height: 90vh;
    border: var(--border-style);
    image-rendering: pixelated;
    image-rendering: -moz-crisp-edges;
    image-rendering: crisp-edges;
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */

@media (max-width: 768px) {
    body {
        font-size: 16px;
    }

    .mobile-menu-btn {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: 3.2rem;
        left: 0;
        width: 100%;
        background: var(--h1-bg);
        border-bottom: var(--border-style);
        flex-direction: column;
        gap: 0;
        padding: 1rem;
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: transform .3s, opacity .3s;
    }

    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }

    .nav-links a {
        padding: .5rem 0;
        border-bottom: var(--border-style);
    }

    .nav-links a:last-child {
        border-bottom: none;
    }

    .section {
        padding: 3rem 5vw;
    }

    .hero {
        min-height: 80vh;
    }

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

    .hero h2 {
        font-size: 1.25rem;
    }
}

@media (max-width: 540px) {
    .filter-buttons {
        flex-direction: column;
    }

    .filter-button {
        width: 100%;
    }

    .back-to-top {
        bottom: 1rem;
        right: 1rem;
    }
}