:root {
    --primary-green: #27ae60;
    --primary-green-light: #2ecc71;
    
    --light-bg: #f4f9f4;
    --card-color: #ffffff;
    --text-color: #1a1a1a;
    --text-muted: #555;
    --border-color: rgba(0, 0, 0, 0.05);
    --header-bg: rgba(244, 249, 244, 0.8);

    --font-sans: 'Poppins', sans-serif;
    --font-serif: 'Playfair Display', serif;
    --font-mono: 'Fira Code', monospace;

    --header-height: 70px;
    --menu-height: 110px;
}

body.dark-mode {
    --bg-color: #121212;
    --card-color: #1e1e1e;
    --text-color: #e0e0e0;
    --text-muted: #bbb;
    --border-color: rgba(255, 255, 255, 0.1);
    --header-bg: rgba(18, 18, 18, 0.8);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.5s ease, color 0.5s ease;
    overflow-x: hidden;
    cursor: none;
}
body.menu-open {
    overflow-y: hidden;
}
body.preloader-active {
    overflow: hidden;
}

a, button, .swiper-slide, .skill-item {
    cursor: none;
}

audio { display: none; }

.cursor-dot, .cursor-outline {
    pointer-events: none;
    position: fixed;
    top: 0;
    left: 0;
    border-radius: 50%;
    z-index: 9999;
    opacity: 0;
    transition: opacity 0.3s ease, transform 0.2s ease;
}
.cursor-dot {
    width: 8px;
    height: 8px;
    background-color: var(--primary-green);
    transform: translate(-50%, -50%);
}
.cursor-outline {
    width: 40px;
    height: 40px;
    border: 2px solid var(--primary-green);
    transform: translate(-50%, -50%);
    transition-duration: 150ms;
    transition-property: width, height, transform, opacity, border-radius;
}
body:hover .cursor-dot,
body:hover .cursor-outline {
    opacity: 1;
}

.cursor-outline.hovered {
    transform: translate(-50%, -50%) scale(1.5);
    opacity: 0.8;
}
.cursor-outline.clicked {
    transform: translate(-50%, -50%) scale(0.8);
    opacity: 0.5;
}
.cursor-outline.text-hover {
    width: 6px;
    height: 30px;
    border-radius: 4px;
    opacity: 0.7;
}


#preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #000;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #0F0;
    font-family: var(--font-mono);
    transition: opacity 0.5s ease-out;
}
#boot-screen {
    width: 90%;
    max-width: 600px;
}
#boot-lines p {
    margin: 5px 0;
    font-size: 0.9rem;
}
#boot-lines .highlight { color: #0FF; }
#boot-lines .ok-status { color: var(--primary-green); font-weight: 600; }
#boot-cursor {
    animation: blink 1s infinite;
}
@keyframes blink {
    50% { opacity: 0; }
}

.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: var(--header-height);
    padding: 0 5%;
    z-index: 1000;
    background-color: var(--header-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: background-color 0.5s ease, border-color 0.5s ease;
    border-bottom: 1px solid var(--border-color);
}
.header-logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-green);
    text-decoration: none;
}
.header-controls {
    display: flex;
    align-items: center;
    gap: 20px;
}

.theme-switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 26px;
}
.theme-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}
.switch-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--text-muted);
    transition: .4s;
    border-radius: 26px;
}
.switch-slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}
.switch-slider i {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.9rem;
    transition: 0.4s;
}
.sun-icon {
    left: 5px;
    color: #f39c12;
    opacity: 1;
}
.moon-icon {
    right: 5px;
    color: #3498db;
    opacity: 0;
}

input:checked + .switch-slider {
    background-color: var(--primary-green);
}
input:checked + .switch-slider:before {
    transform: translateX(24px);
}
input:checked + .switch-slider .sun-icon {
    opacity: 0;
}
input:checked + .switch-slider .moon-icon {
    opacity: 1;
}

.hamburger-btn {
    width: 30px;
    height: 20px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1002;
    position: relative;
}
.hamburger-btn .bar {
    display: block;
    width: 100%;
    height: 3px;
    background-color: var(--text-color);
    transition: all 0.3s ease;
}
.hamburger-btn .bar:nth-child(1) {
    transform-origin: top left;
}
.hamburger-btn .bar:nth-child(2) {
    transform-origin: bottom left;
    margin-top: 10px;
}
body.menu-open .hamburger-btn .bar:nth-child(1) {
    transform: rotate(45deg) translate(2px, -3px);
}
body.menu-open .hamburger-btn .bar:nth-child(2) {
    transform: rotate(-45deg) translate(2px, 3px);
}

.top-dropdown-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background-color: var(--header-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 999;
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 5%;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 0.5rem 1rem;
    height: var(--menu-height);

    transform: translateY(calc(-100% - var(--header-height)));
    visibility: hidden;
    transition: transform 0.5s cubic-bezier(0.7, 0, 0.3, 1), 
                visibility 0.5s,
                background-color 0.5s ease, border-color 0.5s ease;
}
body.menu-open .top-dropdown-menu {
    transform: translateY(0);
    visibility: visible;
}

.nav-link {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-muted);
    text-decoration: none;
    padding: 0.5rem;
    text-align: center;
    border-radius: 8px;
    transition: color 0.3s ease, background-color 0.3s ease;
}
.nav-link:hover {
    color: var(--primary-green);
    background-color: var(--border-color);
}

.music-toggle-btn {
    position: fixed;
    bottom: 20px;
    left: 20px;
    width: 45px;
    height: 45px;
    background-color: var(--card-color);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-muted);
    cursor: pointer;
    z-index: 500;
    font-size: 1rem;
    transition: all 0.3s ease;
}
.music-toggle-btn.playing {
    color: var(--primary-green);
    box-shadow: 0 0 15px var(--primary-green);
}
.music-toggle-btn:hover {
    transform: scale(1.1);
}

.back-to-top-btn {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 45px;
    height: 45px;
    background-color: var(--card-color);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--primary-green);
    cursor: pointer;
    z-index: 500;
    font-size: 1rem;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
}
.back-to-top-btn.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.back-to-top-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 0 15px var(--primary-green);
}

main.container {
    max-width: 900px;
    width: 100%;
    margin: 0 auto;
    padding: var(--header-height) 1.5rem 0 1.5rem;
    transition: transform 0.5s cubic-bezier(0.7, 0, 0.3, 1);
}
body.menu-open main.container {
    transform: translateY(var(--menu-height));
}

section {
    padding: 6rem 0;
    border-bottom: 1px solid var(--border-color);
    transition: border-color 0.5s ease;
}
h2 {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--primary-green);
}
p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-muted);
    margin: 0 auto 1.5rem;
    max-width: 700px;
    transition: color 0.5s ease;
}
blockquote {
    font-size: 1.2rem;
    font-style: italic;
    color: var(--text-muted);
    border-left: 4px solid var(--primary-green);
    padding-left: 1.5rem;
    margin: 2rem auto 0;
    max-width: 650px;
    text-align: left;
    transition: color 0.5s ease, border-color 0.5s ease;
}

.hero-section {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    position: relative;
    padding: 0 1rem;
    border-bottom: none;
    overflow: hidden;
}
.hero-bg-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 50vh;
    background-image: linear-gradient(180deg, rgba(0,0,0,0.4) 0%, rgba(0,0,0,0) 100%), url('https://raw.githubusercontent.com/jubairbro/Faw/refs/heads/main/photos/IMG_20250702_175317.jpg');
    background-size: cover;
    background-position: center;
    z-index: -1;
}
body.dark-mode .hero-bg-image {
    background-image: linear-gradient(180deg, rgba(0,0,0,0.6) 0%, rgba(18,18,18,0) 100%), url('https://raw.githubusercontent.com/jubairbro/Faw/refs/heads/main/photos/IMG_20250702_175317.jpg');
}
.hero-content {
    margin-top: 15vh;
}
.profile-img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    border: 4px solid var(--primary-green);
    object-fit: cover;
    box-shadow: 0 0 30px rgba(39, 174, 96, 0.4);
    margin-bottom: 1.5rem;
}
.hero-title {
    font-family: var(--font-serif);
    font-size: clamp(3rem, 10vw, 4.5rem);
    font-weight: 700;
    margin-bottom: 0.5rem;
}
.hero-title span { color: var(--primary-green); }
.hero-tagline {
    font-size: 1.3rem;
    color: var(--text-muted);
}

.section-flat {
    text-align: left;
}
.section-flat h2 {
    text-align: left;
}
#links.section-flat h2 {
    text-align: center; /* লিঙ্ক সেকশনের শিরোনামটি মাঝে রাখলাম */
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}
.skill-item {
    background-color: var(--card-color);
    border: 1px solid var(--border-color);
    padding: 1.5rem 1rem;
    border-radius: 12px;
    text-align: center;
    font-weight: 600;
    transition: all 0.3s ease;
}
.skill-item:hover {
    transform: translateY(-5px) scale(1.05);
    background-color: var(--primary-green);
    color: #fff;
    border-color: var(--primary-green);
    box-shadow: 0 5px 15px rgba(39, 174, 96, 0.2);
}
.skill-item i {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    display: block;
}

.terminal-section {
    background-color: #1E1E1E;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    text-align: left;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

/* * ✨✨✨ আসল ফিক্স ✨✨✨
 * এই লাইনটি ডটগুলোকে বামে ফিক্স করবে
*/
.terminal-header { 
    display: flex; 
    align-items: center; 
    justify-content: flex-start; /* <-- এই সেই লাইন! */
    padding: 12px 15px; 
    gap: 8px; 
    background-color: #333; 
}

.terminal-dots { display: flex; gap: 8px; }
.dot { width: 12px; height: 12px; border-radius: 50%; }
.dot.red { background-color: #FF5F56; }
.dot.yellow { background-color: #FFBD2E; }
.dot.green { background-color: #27C93F; }
.terminal-title { color: #bbb; font-family: var(--font-mono); font-size: 0.9rem; margin-left: 15px; }
.terminal-body { 
    padding: 0;
    color: #e0e0e0; 
    overflow-x: auto; 
}
.terminal-body pre { 
    margin: 0; 
    font-family: var(--font-mono); 
    font-size: 0.95rem; 
    padding: 1.5rem;
    white-space: pre-wrap;
    word-break: break-all;
}

/* লিঙ্ক কার্ডের ১ কলাম স্টাইল */
.link-card-grid {
    display: grid;
    grid-template-columns: 1fr; /* এক কলামের গ্রিড */
    gap: 1.5rem;
    margin: 2rem auto 0;
    max-width: 700px;
}
.link-card {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    background-color: var(--card-color);
    border: 1px solid var(--border-color);
    padding: 1.5rem 2rem;
    border-radius: 12px;
    text-decoration: none;
    color: var(--text-color);
    transition: all 0.3s ease;
}
.link-card:hover {
    transform: translateY(-5px) scale(1.02);
    border-color: var(--primary-green);
    box-shadow: 0 5px 20px rgba(39, 174, 96, 0.15);
}
.link-card i {
    font-size: 1.8rem;
    color: var(--primary-green);
    margin-top: 0;
}
.link-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-color);
    transition: color 0.5s ease;
}
.link-card p {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.5;
    margin: 0.25rem 0 0 0;
}

.gallery-section {
    padding-top: 6rem;
    padding-bottom: 0;
    border-bottom: 1px solid var(--border-color);
    transition: border-color 0.5s ease;
    text-align: center;
}
.gallery-title { text-align: center; }
.swiper { width: 100%; padding-top: 50px; padding-bottom: 50px; }
.swiper-slide { background-position: center; background-size: cover; width: 300px; height: 300px; border-radius: 15px; overflow: hidden; box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2); }
.swiper-slide img { display: block; width: 100%; height: 100%; object-fit: cover; }

.contact-section { text-align: center; }
.footer-socials {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 2rem;
}
.social-icon {
    font-size: 1.8rem;
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s ease, transform 0.3s ease;
}
.social-icon:hover {
    color: var(--primary-green);
    transform: scale(1.2);
}
footer {
    text-align: center;
    padding: 2.5rem 1rem;
    margin-top: 2rem;
    color: var(--text-muted);
}

@media (max-width: 900px) {
    .container { padding: var(--header-height) 1rem 0 1rem; }
    h2 { font-size: 2rem; }
}

@media (max-width: 768px) {
    .hero-content {
        margin-top: 10vh;
    }
    .skills-grid {
        grid-template-columns: 1fr 1fr;
        gap: 1rem;
    }
    .skill-item { padding: 1rem; }
    .top-dropdown-menu {
        grid-template-columns: 1fr 1fr;
        height: auto;
        padding: 1rem 5%;
        --menu-height: 170px;
    }
    .music-toggle-btn { left: 10px; bottom: 10px; }
    .back-to-top-btn { right: 10px; bottom: 10px; }

  
    .cursor-dot, .cursor-outline { display: none; }
    body { cursor: auto; }
    a, button, .swiper-slide, .skill-item { cursor: pointer; }
}
#bio.terminal-section {
    padding-bottom: 3rem !important;
}

#links.section-flat {
    padding-top: 3rem !important
}