/* --- Βασικές Μεταβλητές Χρωμάτων & Γραμματοσειρών --- */
:root {
    --bg-color: #FDFBF7; 
    --text-main: #333333; 
    --heading-color: #1A365D; 
    --accent-color: #D35400; 
    --accent-hover: #A04000;
    --card-bg: #FFFFFF;
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Lato', sans-serif;
    --success-color: #27ae60;
    --danger-color: #e74c3c;
}

/* --- Accessibility & Smooth Scroll --- */
html { scroll-behavior: smooth; }

.skip-link {
    position: absolute; 
    top: -100%; 
    left: 0; 
    background: var(--accent-color); 
    color: white;
    padding: 8px 16px; 
    z-index: 9999; 
    font-weight: bold; 
    border-radius: 0 0 6px 0; 
    transition: top 0.2s; 
    text-decoration: none;
}
.skip-link:focus { top: 0; }
a:focus, button:focus, input:focus, textarea:focus, label:focus {
    outline: 2px solid var(--accent-color); 
    outline-offset: 2px;
}

/* Accessibility Utility Class (For Screen Readers) */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* --- Γενικό Στυλ --- */
body {
    font-family: var(--font-body); 
    line-height: 1.8; 
    background-color: var(--bg-color); 
    color: var(--text-main); 
    margin: 0; 
    padding: 0;
}

h1, h2, h3, h4 { 
    font-family: var(--font-heading); 
    color: var(--heading-color); 
    margin-top: 0; 
}

h2 { 
    font-size: 2.2em; 
    border-bottom: 2px solid #EAECEE; 
    padding-bottom: 10px; 
    margin: 50px 0 25px 0; 
}

h3 { 
    font-size: 1.5em; 
    margin: 15px 0 10px 0; 
}

h2[id], h3[id] { 
    scroll-margin-top: 85px; 
}
.content-section > h2:first-child { 
    margin-top: 0; 
}

.content-section:last-child { 
    border-bottom: none; 
    margin-bottom: 0; 
    padding-bottom: 0; 
}

/* --- Navigation Bar --- */
header { 
    position: sticky; 
    top: 0; 
    z-index: 1000; 
}

.main-nav {
    background-color: rgba(26, 54, 93, 0.82); /* Frosted Glass Tweak */
    padding: 15px 0; 
    text-align: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1); 
    backdrop-filter: blur(20px) saturate(180%); /* Frosted Glass Tweak */
    -webkit-backdrop-filter: blur(20px) saturate(180%); /* iOS Safari Support */
    width: 100%; 
    box-sizing: border-box;
}

.main-nav ul { list-style-type: none; margin: 0; padding: 0; }
.main-nav ul li { display: inline-block; margin: 0 15px; }
.main-nav ul li a {
    color: #fff; 
    text-decoration: none; 
    font-weight: 700; 
    font-size: 0.9em; 
    text-transform: uppercase; 
    letter-spacing: 1px; 
    transition: color 0.3s ease; 
    padding: 8px 12px;
}
.main-nav ul li a:hover { color: var(--accent-color); }

.lang-switch { 
    font-size: 1.1em !important; 
    border-left: 1px solid rgba(255,255,255,0.3); 
    margin-left: 10px; 
    padding-left: 20px !important; 
}

/* --- Page Structure --- */
.page-wrapper { 
    max-width: 1200px; 
    margin: 0 auto 40px auto; 
    padding: 0 20px; 
}

/* 🔥 Premium Hero Section with Gradient Overlay 🔥 */
.hero-section {
    position: relative; 
    width: 100%; 
    height: 500px; 
    margin-bottom: 50px; 
    border-radius: 12px;
    overflow: hidden; 
    box-shadow: 0 10px 30px rgba(0,0,0,0.15); 
    display: flex; 
    flex-direction: column;
    justify-content: center; 
    align-items: center; 
    text-align: center;
}

.hero-section::after {
    content: ""; 
    position: absolute; 
    inset: 0;
    background: linear-gradient(to bottom, rgba(0,0,0,0.2), rgba(0,0,0,0.6)); 
    z-index: 1; 
    pointer-events: none;
}
.hero-image { 
    position: absolute; 
    top: 0; 
    left: 0; 
    width: 100%; 
    height: 100%; 
    object-fit: cover; 
    z-index: 0; 
}

.hero-content { 
    position: relative; 
    z-index: 2; 
    padding: 0 20px; 
}

.hero-section h1 { 
    color: #ffffff; 
    font-size: 3.5em; 
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5); 
    margin-bottom: 10px; 
    line-height: 1.1; 
}

.hero-subtitle { 
    color: #f0f0f0; 
    font-size: 1.3em; 
    font-style: italic; 
    text-shadow: 1px 1px 3px rgba(0,0,0,0.5); 
    font-weight: 400; 
    margin: 0;
}

.intro-text { 
    font-size: 1.1em; 
    color: #444; 
    margin-bottom: 30px;
}

/* --- Διάταξη Στηλών --- */
.columns-container { 
    display: flex; 
    gap: 40px; 
}

.main-content { 
    flex: 3; 
    max-width: 800px; 
}

.content-section { 
    margin-bottom: 60px; 
    padding-bottom: 30px; 
    border-bottom: 1px solid #f0f0f0; 
}

.sidebar {
    flex: 1; 
    background-color: #F8F9F9; 
    padding: 30px; 
    border-radius: 12px; 
    border: 1px solid #EAECEE;
    position: sticky; 
    top: 85px; 
    max-height: calc(100vh - 100px); 
    overflow-y: auto; 
    max-width: 320px;
    scrollbar-width: thin; 
    scrollbar-color: var(--accent-color) transparent;
}

.sidebar-section { 
    margin-bottom: 30px; 
}

/* --- Κάναβος Καρτών (Grid) --- */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

.card {
    background: var(--card-bg);
    border-radius: 12px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    /* iOS Spring-Physics Card Hover Tweak */
    transition: transform 0.45s cubic-bezier(0.34, 1.56, 0.64, 1),
                box-shadow 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: transform;
    backface-visibility: hidden;
    position: relative;
    border: 1px solid #EAECEE;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.card:hover .cta-button { 
    transform: translateY(-1px); 
    box-shadow: 0 4px 10px rgba(211, 84, 0, 0.2); 
}

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

.card-content { 
    padding: 25px; 
    display: flex; 
    flex-direction: column; 
    flex-grow: 1; 
}

.card-content h3 { 
    margin-bottom: 5px; 
    font-size: 1.4em; 
    transition: color 0.2s; 
}

.card:hover .card-content h3 { 
    color: var(--accent-color); 
} 

/* 🔥 Accessible READ MORE / SHOW MORE MECHANISM (Pure CSS) 🔥 */
.read-more-toggle, .show-more-cards-toggle { 
    position: absolute; 
    opacity: 0; 
    width: 1px; 
    height: 1px; 
    overflow: hidden; 
    clip: rect(0,0,0,0);
}

/* Keyboard Focus styles */
.read-more-toggle:focus-visible ~ .read-more-label,
.show-more-cards-toggle:focus-visible ~ .show-more-btn {
    outline: 2px solid var(--accent-color);
    outline-offset: 4px;
    border-radius: 4px;
}

.read-more-content {
    max-height: 0; 
    overflow: hidden; 
    opacity: 0; 
    margin-top: 0;
    /* Liquid Read More Expansion Tweak */
    transform: translateY(-4px);
    transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1),
                opacity   0.4s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.4s cubic-bezier(0.4, 0, 0.2, 1),
                margin    0.4s ease;
}

.read-more-label {
    display: inline-block; 
    font-size: 0.9em; 
    font-weight: bold; 
    color: var(--heading-color); 
    cursor: pointer;
    margin-bottom: 15px; 
    border-bottom: 1px dashed var(--heading-color); 
    transition: color 0.2s; 
    position: relative; 
    z-index: 10;
}

.read-more-label:hover { 
    color: var(--accent-color); 
    border-color: var(--accent-color); 
}

.read-more-toggle:checked ~ .read-more-content {
    max-height: 500px; 
    opacity: 1; 
    transform: translateY(0);
    margin-top: 10px; 
    margin-bottom: 15px;
}

/* i18n Dynamic Content Injection */
.read-more-toggle:checked ~ .read-more-label::after { content: attr(data-less); }
.read-more-toggle:not(:checked) ~ .read-more-label::after { content: attr(data-more); }

.hook-text { 
    margin-bottom: 10px; 
    color: #444; 
    font-size: 1.05em; 
    font-weight: 500; 
    line-height: 1.5; 
    font-style: italic;
}

.details-text { 
    color: #555; 
    font-size: 0.95em; 
    line-height: 1.6; 
    margin: 0;
}

/* --- SHOW MORE CARDS CSS --- */
.extra-card { display: none; }
.show-more-cards-toggle:checked ~ .cards-grid .extra-card { display: flex; }

.show-more-btn {
    display: block; 
    width: 100%; 
    text-align: center; 
    padding: 12px; 
    margin-bottom: 40px;
    background-color: transparent; 
    color: var(--heading-color); 
    font-weight: bold; 
    border: 2px dashed #CCD1D1; 
    border-radius: 8px; 
    cursor: pointer; 
    transition: 0.3s ease;
}

.show-more-btn:hover { 
    border-color: var(--accent-color); 
    color: var(--accent-color); 
    background-color: rgba(211, 84, 0, 0.05); 
}

.show-more-cards-toggle:checked ~ .show-more-btn { display: none; }

/* Trust, Scarcity & Price Signals (CRO) */
.trust-badge { 
    color: var(--success-color); 
    font-weight: bold; 
    font-size: 0.85em; 
    margin-bottom: 10px; 
    display: flex; 
    align-items: center; 
    gap: 5px;
}

.scarcity-text { 
    color: var(--danger-color); 
    font-weight: bold; 
    font-size: 0.85em; 
    margin-top: auto; 
    margin-bottom: 15px;
}

.price { 
    font-weight: bold; 
    font-size: 1.15em; 
    color: var(--heading-color); 
    margin-bottom: 15px; 
    border-top: 1px solid #f5f5f5; 
    padding-top: 15px;
}

.card.featured { 
    border: 2px solid var(--accent-color); 
    transform: scale(1.02); 
    box-shadow: 0 8px 20px rgba(0,0,0,0.08); 
}

.card.featured:hover { 
    transform: scale(1.02) translateY(-5px); 
    box-shadow: 0 15px 30px rgba(0,0,0,0.12); 
}

.featured-badge { 
    background: var(--accent-color); 
    color: white; 
    padding: 5px 10px; 
    font-size: 0.8em; 
    font-weight: bold; 
    position: absolute; 
    top: 15px; 
    right: 15px; 
    border-radius: 4px; 
    z-index: 2; 
    text-transform: uppercase; 
    letter-spacing: 1px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
}

/* Sidebar Widget */
.widget-card { 
    background: #fff; 
    padding: 20px; 
    border-radius: 8px; 
    box-shadow: 0 4px 12px rgba(0,0,0,0.08); 
    border-top: 4px solid var(--accent-color); 
    margin-bottom: 30px;
}

.widget-card img { 
    border-radius: 6px; 
    margin-bottom: 15px; 
    width: 100%; 
    display: block; 
}

.widget-text { 
    font-size: 0.9em; 
    margin-bottom: 15px; 
    color: #444; 
    line-height: 1.5;
}

/* --- Buttons --- */
.cta-button {
    display: inline-block; 
    background-color: var(--accent-color);
    color: #fff !important; 
    padding: 12px 24px; 
    border-radius: 6px; 
    font-weight: bold; 
    text-decoration: none; 
    transition: all 0.2s ease; 
    border: none; 
    cursor: pointer; 
    text-align: center; 
    min-height: 44px; 
    line-height: 1.2;
}

.cta-button:hover { 
    background-color: var(--accent-hover); 
    transform: translateY(-2px); 
    box-shadow: 0 4px 10px rgba(211, 84, 0, 0.3); 
}

.cta-button-secondary { background-color: var(--heading-color); }
.cta-button-secondary:hover { background-color: #0f2440; }

.cta-full { width: 100%; box-sizing: border-box; }

.final-cta { 
    text-align: center; 
    background-color: #F8F9F9; 
    padding: 40px; 
    border-radius: 12px; 
    margin-top: 40px; 
}

.final-cta h2 { border: none; margin-bottom: 20px; }
.final-cta .cta-button { margin: 10px; }

/* --- Footer --- */
footer {
    background-color: var(--heading-color);
    color: #adb5bd;
    text-align: center;
    padding: 30px 20px;
    font-size: 0.85em;
    line-height: 1.8;
    margin-top: 60px;
}

footer .footer-links {
    margin-bottom: 12px;
}

footer .footer-links a {
    color: #dee2e6;
    text-decoration: none;
    transition: color 0.2s;
    margin: 0 10px;
    font-weight: bold;
}

footer .footer-links a:hover {
    color: var(--accent-color);
}

.footer-text {
    color: #adb5bd;
    margin: 4px 0;
}

.disclaimer {
    font-size: 0.8em;
    color: #6c757d;
    margin-top: 8px;
    font-style: italic;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* --- Premium Monetization UI Blocks --- */
.warning-box {
    background-color: #fff5f5;
    border-left: 4px solid #e53e3e;
    color: #9b2c2c;
    padding: 15px;
    margin: 15px 0;
    border-radius: 4px;
    font-size: 0.9em;
    line-height: 1.4;
}

.warning-box strong {
    color: #c53030;
    text-transform: uppercase;
    font-size: 0.8em;
    display: block;
    margin-bottom: 5px;
}

.decision-box {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 15px;
    margin: 15px 0;
}

.decision-box h4 {
    font-size: 1em;
    margin-bottom: 10px;
    color: var(--heading-color);
}

.decision-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.decision-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid #edf2f7;
}

.decision-item:last-child {
    border-bottom: none;
}

.decision-label {
    font-weight: 600;
    font-size: 0.85em;
}

.decision-price {
    color: var(--accent-color);
    font-weight: 700;
    font-size: 0.9em;
}

.insider-tip {
    background-color: #f0f9ff;
    border-left: 4px solid #0077cc;
    color: #0c4a6e;
    padding: 15px;
    margin: 15px 0;
    border-radius: 4px;
    font-size: 0.9em;
}

/* --- Responsive (Tablet & Mobile) --- */
@media (max-width: 900px) {
    .columns-container { flex-direction: column; }
    .sidebar { position: static; max-height: none; overflow-y: visible; max-width: 100%; margin-top: 40px;}
    .hero-section { height: 400px; }
}

@media screen and (max-width: 768px) {
    header {
        position: static !important; /* Ξεκολλάει το μενού στα κινητά */
    }
    .main-nav { padding: 10px 0; }
    
    .main-nav ul {
        display: flex !important;
        flex-direction: row !important;
        overflow-x: auto !important; /* Swipe δεξιά-αριστερά */
        white-space: nowrap !important;
        padding: 5px 15px !important;
        justify-content: flex-start !important;
        -webkit-overflow-scrolling: touch; 
        -ms-overflow-style: none;  
        scrollbar-width: none;  
    }
    
    .main-nav ul::-webkit-scrollbar {
        display: none;
    }

    .main-nav ul li {
        display: inline-block !important;
        margin: 0 15px 0 0 !important;
    }
    
    .main-nav ul li a {
        padding: 8px 12px !important;
        font-size: 14px !important;
    }
    
    .lang-switch { 
        border-left: 1px solid rgba(255,255,255,0.3) !important; 
        margin-left: 0 !important; 
        padding-left: 15px !important; 
    }
}

/* Placeholder for future AI Chatbot (Phase 2) */
.chatbot-fab {
    /* Styles will go here */
}