/* ===== RESET ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    background-color: #f4f4f4;
    color: #333;
    line-height: 1.6;
}

/* ===== GLOBAL SMOOTH SCROLLING ===== */
html {
    scroll-behavior: smooth;
}

.box[id] {
    scroll-margin-top: 70px;
}

/* ===== CONTAINER ===== */
.container {
    width: 100%;
    background: #ffffff;
    min-height: 100vh;
}

/* ===== HEADER ===== */
header {
    background: linear-gradient(180deg, #2c3e50, #3a4a5a);
    color: #fff;
    padding: 20px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.site-header {
    display: flex;
    align-items: center;
    gap: 20px;
}

.site-logo {
    width: 70px;
    height: auto;
    object-fit: contain;
}

.site-title h1 {
    color: #ffffff;
    font-size: 2.2rem;
    font-weight: 600;
    margin: 0;
    letter-spacing: 0.5px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

header p {
    font-size: 1rem;
    color: #ccdbe9;
    margin-top: 6px;
    font-weight: 300;
}

/* ===== NAV ===== */
nav {
    background: #4f6379;
    position: sticky;
    top: 0;
    z-index: 10;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

#full-nav ul {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    padding: 0 max(20px, min(100px, 6vw));
}

#full-nav ul li a {
    display: block;
    padding: 14px 20px;
    color: #ffffff;
    text-decoration: none;
    text-align: center;
    font-weight: 500;
    transition: background 0.2s, color 0.2s;
}

#full-nav ul li a.active {
    background: #c8cdd3;
    color: #222;
    font-weight: bold;
}

#full-nav ul li a:hover:not(.active) {
    background: #5f738b;
    color: #fff;
}

.nav-toggle {
    position: absolute;
    top: 0;
    right: 25px;
    height: 50px;
    width: 50px;
    background: #5f738b;
    color: white;
    border: none;
    font-size: 20px;
    cursor: pointer;
    z-index: 11;
    transition: background 0.2s;
}

.nav-toggle:hover {
    background: #6f839b;
}

/* ===== ASIDE ===== */
aside {
    width: 250px;
    padding: 15px;
    background: #f0f0f0;
    border-right: 1px solid #ddd;
    position: sticky;
    top: 64px;
    height: calc(100vh - 48px);
}

aside h3 {
    margin-bottom: 10px;
    border-bottom: 1px solid #ccc;
    padding-bottom: 5px;
}

aside ul {
    list-style: square;
    margin-left: 20px;
}

aside ul li {
    margin-bottom: 8px;
}

aside ul li a {
    color: inherit;
    text-decoration: none;
    display: block;
    padding: 2px 0;
}

aside ul li a:hover {
    background-color: #e0e0e0;
}

/* ===== MAIN CONTENT ===== */
.main {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 20px;
}

section.content {
    flex: 1;
    padding: 20px;
}

section.content h2 {
    margin-bottom: 10px;
}

/* ===== BOXES ===== */
.box {
    border: 1px solid #ccc;
    padding: 20px;
    margin-bottom: 20px;
    background: #fafafa;
    overflow: auto;
}

.box ul {
    list-style-position: inside;
}

.box video {
    max-width: 100%;
    height: auto;
    display: block;
}


/* ===== SKILLS ICONS ===== */
.skills-container {
    display: flex;
    flex-wrap: wrap;
    gap: 25px;
    margin-top: 20px;
}

.skill {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 80px;
}

.skill img {
    width: 50px;
    height: 50px;
    object-fit: contain;
    transition: transform 0.3s ease;
}

.skill img:hover {
    transform: scale(1.15);
}

.skill span {
    margin-top: 8px;
    font-size: 14px;
}

/* ===== SPECIAL BOX STYLES ===== */
.overview-box {
    background: #f0f7ff;
    border-left: 5px solid #2c3e50;
}

.current-box {
    background: #fff9e6;
    border: 1px solid #f1c40f;
}

.more-content {
    display: none;
    margin-top: 10px;
}

.read-more-btn {
    display: inline-block;
    margin: 8px 0;
    cursor: pointer;
    color: #2c3e50;
    text-decoration: underline;
}

/* ===== ABOUT IMAGE BOX ===== */
.about-image-box {
    float: right;
    width: 250px;
    padding: 8px;
    margin-left: 25px;
    margin-bottom: 15px;
    border: 1px solid #ccc;
    border-radius: 8px;
    background: #fff;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    text-align: center;
}

.about-image-box img {
    width: 100%;
    height: auto;
    border-radius: 6px;
    display: block;
}

/* ===== SECTION DIVIDER ===== */
.section-divider {
    border: 0;
    height: 4px;
    background: linear-gradient(to right, transparent, #888, transparent);
    margin: 40px 0;
}

/* ===== FOOTER ===== */
footer {
    background: #222;
    color: #ccc;
    text-align: center;
    padding: 15px;
    font-size: 14px;
}

/* Social icons container */
footer .social-icons {
    margin-bottom: 15px;
    opacity: 0.8;
}

footer .social-icons a {
    display: inline-block;
    margin: 0 10px;
    transition: opacity 0.2s;
}

footer .social-icons a:hover {
    opacity: 0.8;
}

footer .social-icons img {
    width: 30px;
    height: auto;
    display: block;
}

/* Footer links (About, Privacy, etc.) */
footer .footer-links {
    margin-top: 15px;
    margin-bottom: 0px;
}

footer .footer-links a {
    color: lightgray;
    text-decoration: none;
    margin: 0 20px;
    transition: color 0.2s;
}

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

/* Copyright line */
footer .copyright {
    margin-top: 0;
    color: lightgray;
}

/* ===== MOBILE ===== */
@media (max-width: 768px) {
    .main {
        flex-direction: column;
    }

    aside {
        display: none;
    }

    #full-nav ul {
        grid-template-columns: 1fr;
        padding: 0 25px;
    }

    #full-nav .nav-toggle {
        display: none;
    }

    #collapsed-nav .nav-toggle {
        display: block;
    }

    #collapsed-nav {
        background: #444;
        position: sticky;
        top: 0;
        z-index: 10;
        display: none;
    }

    #collapsed-nav .collapsed-nav-content {
        padding: 0 25px;
    }

    #collapsed-nav a {
        display: block;
        padding: 12px 20px;
        color: #222;
        text-decoration: none;
        background: #c8cdd3;
        font-weight: bold;
        text-align: center;
        width: 100%;
        box-sizing: border-box;
    }
}