/* --- 1. BASE SETTINGS --- */
:root {
    --bg-dark: #0a192f;
    --bg-darker: #060f1d;
    --text-light: #e6f1ff;
    --accent-gold: #ffc107;
    --accent-orange: #fd7e14;
    --font-main: 'Montserrat', sans-serif;
    --sidebar-bg: rgba(10, 25, 47, 0.98);
    --card-bg: rgba(255, 255, 255, 0.05);
    --sidebar-width: 320px;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-main);
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-darker) 100%);
    color: var(--text-light);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

/* --- 2. LAYOUT --- */
.main-content {
    margin-right: 0; /* Full width */
    width: 100%;
    transition: margin-right 0.3s ease;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* --- 3. HEADER & CONTROLS --- */
header {
    padding: 15px 0;
    background: rgba(10, 25, 47, 0.95);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-container {
    display: flex;
    align-items: center;
}

.header-logo {
    height: 40px;
    margin-right: 10px;
}

.logo-text {
    font-weight: 700;
    font-size: 1.2rem;
    letter-spacing: 1px;
}

/* Desktop Menu */
.desktop-nav {
    display: flex;
    gap: 25px;
    align-items: center;
}

.header-link {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: color 0.2s;
    cursor: pointer;
    position: relative;
}

    .header-link:hover {
        color: var(--accent-gold);
    }

    .header-link::after {
        content: '';
        position: absolute;
        width: 0;
        height: 2px;
        bottom: -4px;
        left: 0;
        background-color: var(--accent-gold);
        transition: width 0.3s;
    }

    .header-link:hover::after {
        width: 100%;
    }

.header-controls {
    display: flex;
    align-items: center;
    gap: 15px;
}

.language-switcher select {
    background: transparent;
    color: var(--text-light);
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 6px 10px;
    border-radius: 5px;
    font-family: var(--font-main);
    cursor: pointer;
    outline: none;
}

    .language-switcher select option {
        background: var(--bg-dark);
    }

.menu-btn {
    display: none;
    background: transparent;
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 5px;
    cursor: pointer;
    padding: 8px;
    flex-direction: column;
    justify-content: space-between;
    width: 42px;
    height: 38px;
    z-index: 101;
}

    .menu-btn span {
        display: block;
        width: 100%;
        height: 3px;
        background-color: var(--accent-gold);
        border-radius: 2px;
    }

/* --- 4. HERO & CONTENT --- */
.hero {
    text-align: center;
    padding: 40px 0;
    flex-grow: 1;
}

.hero-banner {
    width: 100%;
    max-width: 800px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    margin-bottom: 30px;
}

.hero-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 15px;
    background: linear-gradient(to right, #ffffff, var(--accent-gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.cta-button {
    display: inline-block;
    background: linear-gradient(45deg, var(--accent-gold), var(--accent-orange));
    color: var(--bg-darker);
    padding: 15px 30px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1rem;
    margin-top: 20px;
    box-shadow: 0 5px 15px rgba(255, 193, 7, 0.3);
}

.features {
    padding: 40px 0;
    background: rgba(255, 255, 255, 0.02);
}

.feature-list {
    list-style: none;
    padding: 0;
    display: inline-block;
    text-align: left;
}

    .feature-list li {
        font-size: 1rem;
        margin-bottom: 10px;
    }

footer {
    text-align: center;
    padding: 20px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.8rem;
    opacity: 0.7;
    margin-top: auto;
}

.author-link {
    color: var(--accent-gold);
    text-decoration: none;
}

/* --- 5. SIDEBAR (NEWS) --- */
.news-sidebar {
    position: fixed;
    top: 0;
    right: -340px; /* Hidden by default */
    bottom: 0;
    width: 320px;
    background-color: var(--sidebar-bg);
    border-left: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 2500;
    display: flex;
    flex-direction: column;
    box-shadow: -5px 0 20px rgba(0,0,0,0.5);
    transition: right 0.3s ease-in-out;
}

    .news-sidebar.active {
        right: 0; /* Slide in */
    }

.sidebar-header {
    padding: 20px;
    background: rgba(0,0,0,0.2);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 0;
}

.close-sidebar-btn {
    display: block; /* Always visible to close */
    position: absolute;
    top: 15px;
    right: 15px;
    background: none;
    border: none;
    color: #fff;
    font-size: 2rem;
    cursor: pointer;
    z-index: 1000;
}

.news-feed {
    flex-grow: 1;
    overflow-y: auto;
    padding: 15px;
}

.news-card {
    background: var(--card-bg);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    margin-bottom: 15px;
    overflow: hidden;
}

.news-img {
    width: 100%;
    height: 120px;
    object-fit: cover;
}

.news-content {
    padding: 15px;
}

.news-title {
    margin: 0 0 5px 0;
    font-size: 1rem;
    color: var(--accent-gold);
}

.news-body {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.8);
}

.news-date {
    font-size: 0.7rem;
    color: rgba(255,255,255,0.4);
    margin-bottom: 5px;
}

/* --- 6. MOBILE MENU (OVERLAY) --- */
.mobile-nav {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: #060f1d;
    z-index: 2000;
    flex-direction: column;
    padding: 20px;
    box-sizing: border-box;
    transform: translateX(-100%);
    transition: transform 0.3s ease-in-out;
}

    .mobile-nav.active {
        transform: translateX(0);
    }

.mobile-nav-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    padding-bottom: 15px;
}

.mobile-nav-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-gold);
}

.close-menu-btn {
    background: none;
    border: none;
    color: #fff;
    font-size: 2.5rem;
    cursor: pointer;
    line-height: 1;
}

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

    .mobile-nav-list li {
        margin-bottom: 20px;
    }

.nav-link {
    color: var(--text-light);
    text-decoration: none;
    font-size: 1.3rem;
    font-weight: 600;
    display: block;
    padding: 10px;
    border-radius: 8px;
    background: rgba(255,255,255,0.03);
    transition: background 0.2s;
}

    .nav-link:active {
        background: rgba(255,255,255,0.1);
        color: var(--accent-gold);
    }

/* --- 7. INSTRUCTIONS PAGE --- */
.inst-page-container {
    padding-top: 20px;
    padding-bottom: 40px;
    min-height: 80vh;
}

.back-link {
    background: none;
    border: none;
    color: var(--accent-gold);
    font-size: 1rem;
    cursor: pointer;
    margin-bottom: 20px;
    font-weight: 600;
    padding: 0;
    font-family: var(--font-main);
}

.inst-wrapper {
    display: flex;
    background: rgba(10, 25, 47, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    overflow: hidden;
    min-height: 600px;
}

/* Nav Left */
.inst-nav {
    width: 280px;
    background: rgba(0, 0, 0, 0.2);
    border-right: 1px solid rgba(255, 255, 255, 0.05);
    padding: 25px;
    flex-shrink: 0;
}

    .inst-nav h3 {
        margin-top: 0;
        color: var(--text-light);
        font-size: 1.3rem;
        margin-bottom: 20px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        padding-bottom: 10px;
    }

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

    .inst-tabs li {
        padding: 12px 15px;
        cursor: pointer;
        border-radius: 8px;
        margin-bottom: 8px;
        transition: all 0.2s;
        font-weight: 500;
        color: rgba(255, 255, 255, 0.7);
    }

        .inst-tabs li:hover {
            background: rgba(255, 255, 255, 0.05);
            color: #fff;
        }

        .inst-tabs li.active {
            background: linear-gradient(90deg, rgba(255, 193, 7, 0.15), transparent);
            color: var(--accent-gold);
            border-left: 3px solid var(--accent-gold);
        }

/* Content Right */
.inst-content {
    flex-grow: 1;
    padding: 40px;
    background: rgba(255, 255, 255, 0.02);
}

/* Typography */
.typography h3 {
    color: var(--accent-gold);
    margin-top: 0;
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
}

.typography p {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: rgba(230, 241, 255, 0.9);
}

.typography ul {
    margin-bottom: 1.5rem;
    padding-left: 20px;
}

.typography li {
    margin-bottom: 10px;
    font-size: 1.05rem;
}

.typography strong {
    color: #fff;
}

/* --- 8. ADAPTIVE --- */
@media (max-width: 992px) {
    .menu-btn {
        display: flex;
    }

    .mobile-nav {
        display: flex;
    }

    .desktop-nav {
        display: none;
    }

    .news-sidebar {
        width: 100%;
        right: -100%;
    }

        .news-sidebar.active {
            right: 0;
        }

    .hero-title {
        font-size: 1.8rem;
    }

    .logo-text {
        display: none;
    }
}

@media (max-width: 768px) {
    .inst-wrapper {
        flex-direction: column;
        min-height: auto;
    }

    .inst-nav {
        width: 100%;
        padding: 15px;
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        box-sizing: border-box;
    }

    .inst-tabs {
        display: flex;
        overflow-x: auto;
        gap: 10px;
        padding-bottom: 5px;
        -ms-overflow-style: none;
        scrollbar-width: none;
    }

        .inst-tabs::-webkit-scrollbar {
            display: none;
        }

        .inst-tabs li {
            white-space: nowrap;
            margin-bottom: 0;
            background: rgba(255,255,255,0.05);
            font-size: 0.9rem;
            padding: 10px 15px;
        }

            .inst-tabs li.active {
                border-left: none;
                border-bottom: 2px solid var(--accent-gold);
                background: rgba(255, 193, 7, 0.1);
            }

    .inst-content {
        padding: 20px;
    }

    .typography h3 {
        font-size: 1.4rem;
    }
}