:root {
    --bg: #000000;
    --card-bg: #0a0a0a;
    --text: #e0e0e0;
    --dim-text: #808080;
    --border: #1a1a1a;
    --accent: #ffffff;
}

html,
body {
    overflow-x: hidden;
    width: 100%;
    max-width: 100vw;
}

html {
    scroll-behavior: smooth;
}

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

body {
    background-color: var(--bg);
    color: var(--text);
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main {
    flex: 1;
    width: 100%;
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 2rem 150px;
}

footer {
    text-align: center;
    padding: 2rem 0;
    font-size: 0.8rem;
    color: var(--dim-text);
    border-top: 1px solid var(--border);
    background-color: var(--bg);
    width: 100%;
    margin-top: auto;
}

nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.95);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.nav-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand-group {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.profile-pic {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--border);
    background-color: var(--card-bg);
}

.brand {
    font-weight: 600;
    text-decoration: none;
    color: var(--text);
    letter-spacing: 2px;
}

.brand span {
    font-weight: 300;
    color: var(--dim-text);
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--dim-text);
    text-decoration: none;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: color 0.3s;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--accent);
}

.content-section {
    display: block;
    margin-bottom: 5rem;
}

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding-top: 80px;
    overflow: hidden;
    text-align: center;
}

#particles-js {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

.hero-content {
    max-width: 800px;
}

.hero h1 {
    font-size: clamp(3rem, 10vw, 6rem);
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
    background: linear-gradient(90deg, #fff, #808080, #fff);
    background-size: 200% auto;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: textGradient 10s linear infinite;
}

@keyframes textGradient {
    to {
        background-position: 200% center;
    }
}

.hero p {
    color: var(--dim-text);
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 4rem;
}

.label {
    font-size: 0.75rem;
    color: var(--dim-text);
    margin-bottom: 2.5rem;
    letter-spacing: 4px;
}

.content p {
    font-size: 1.1rem;
    color: var(--dim-text);
    max-width: 800px;
    margin-bottom: 2rem;
}

.transformation-section {
    margin-top: 4rem;
    border-top: 1px solid var(--border);
    padding-top: 2rem;
}

.transformation-section h3 {
    font-size: 1.2rem;
    letter-spacing: 2px;
    margin-bottom: 2rem;
    color: var(--text);
}

.transform-row {
    display: flex;
    align-items: center;
    gap: 3rem;
    margin-bottom: 5rem;
}

.transform-row.reverse {
    flex-direction: row-reverse;
}

.transform-text {
    flex: 1;
}

.transform-text p {
    font-size: 1.1rem;
    color: var(--dim-text);
    margin: 0;
    line-height: 1.8;
}

.transform-image {
    flex: 1;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.transform-image img {
    width: 100%;
    max-width: 350px;
    height: auto;
    aspect-ratio: 4/5;
    object-fit: cover;
    border-radius: 4px;
    border: 1px solid var(--border);
    margin: 0 auto;
}

.transform-image figcaption {
    text-align: center;
    color: var(--dim-text);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.animate-item {
    opacity: 0;
    will-change: opacity, transform;
    /* Χρήση cubic-bezier για "spring" εφέ που τραβάει το βλέμμα */
    transition: opacity 0.8s ease-out, transform 1.2s cubic-bezier(0.22, 1, 0.36, 1);
}

.fade-in-up {
    /* Αυξημένη απόσταση από 50px σε 100px και ελαφρύ scale down στο 0.9 */
    transform: translateY(100px) scale(0.9);
}

.fade-in-left {
    transform: translateX(-50px);
}

.fade-in-right {
    transform: translateX(50px);
}

.animate-item.appear {
    opacity: 1;
    /* Επιστροφή στην αρχική κατάσταση με απόλυτη ευκρίνεια */
    transform: translateY(0) scale(1);
}
/* Ειδικά για τον τίτλο στο Hero για να "σκάει" πιο έντονα */
.hero h1.animate-item {
    transition-duration: 1.5s;
    letter-spacing: -5px; /* Ξεκινάει πιο σφιχτά */
}

.hero h1.animate-item.appear {
    letter-spacing: -1px; /* Ανοίγει κατά την εμφάνιση */
}

.tools-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.tool-card {
    background: linear-gradient(145deg, #050505 0%, #0f0f0f 100%);
    border: 1px solid var(--border);
    padding: 2.5rem;
    border-radius: 4px;
    transition: border-color 0.3s ease, transform 0.3s ease;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.tool-card:hover {
    border-color: #333;
    transform: translateY(-2px);
}

.tool-info h3 {
    font-size: 1.2rem;
    letter-spacing: 2px;
    margin-bottom: 1rem;
}

.tool-info p {
    color: var(--dim-text);
    font-size: 0.95rem;
    margin-bottom: 2rem;
}

.btn-main {
    display: inline-block;
    background: var(--accent);
    color: var(--bg);
    padding: 0.8rem 1.5rem;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    border-radius: 2px;
    transition: opacity 0.3s;
}

.btn-main:hover {
    opacity: 0.8;
}

.social-links {
    display: flex;
    gap: 2rem;
}

.social-item {
    color: var(--text);
    text-decoration: none;
    font-size: 1.1rem;
    border-bottom: 1px solid var(--dim-text);
    padding-bottom: 4px;
    transition: border-color 0.3s, color 0.3s;
}

.social-item:hover {
    color: var(--accent);
    border-color: var(--accent);
}


@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        padding: 1.2rem;
    }

    .brand-group {
        justify-content: center;
        margin-bottom: 1.5rem;
    }

    .nav-links {
        gap: 1.5rem;
        flex-wrap: wrap;
        justify-content: center;
    }

    .hero {
        padding-top: 140px;
    }

    .hero h1 {
        margin-bottom: 1rem;
    }

    .hero p {
        margin-bottom: 3rem;
    }

    .tools-container {
        grid-template-columns: 1fr;
    }

    .transform-row,
    .transform-row.reverse {
        flex-direction: column;
        text-align: left; 
        gap: 1.5rem;
        margin-bottom: 3.5rem; 
    }

    .social-links {
        flex-direction: column;
        gap: 1.5rem;
    }
}