:root {
    --bg-dark: #000000;
    --card-bg: rgba(255, 255, 255, 0.03);
    --border-color: rgba(255, 255, 255, 0.1);
    --accent-color: #1d78cb;
    --accent-glow: rgba(29, 120, 203, 0.3);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.6);
    --glass-blur: 40px;
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

body {
    background: var(--bg-dark);
    color: var(--text-primary);
    font-family: var(--font-main);
    line-height: 1.6;
    overflow-x: hidden;
    animation: fadeInPage 0.5s ease-out forwards;
}

@keyframes fadeInPage {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

body.fade-out {
    animation: fadeOutPage 0.3s ease-in forwards;
}

@keyframes fadeOutPage {
    from { opacity: 1; transform: translateY(0); }
    to { opacity: 0; transform: translateY(-10px); }
}

.hub-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 2rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    text-align: center;
    margin-bottom: 3rem;
}

.logo-animation {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    display: inline-block;
    animation: bounce 2s infinite ease-in-out;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

h1 {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, #fff 0%, #1d78cb 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.subtitle {
    font-size: 1rem;
    color: var(--accent-color);
    text-transform: uppercase;
    letter-spacing: 0.3em;
    font-weight: 600;
}

.search-container {
    display: flex;
    justify-content: center;
    margin-bottom: 2rem;
    padding: 0 1rem;
}

.app-search-input {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 1rem 1.5rem;
    border-radius: 1.5rem;
    width: 100%;
    max-width: 500px;
    font-size: 1.1rem;
    font-family: inherit;
    outline: none;
    transition: all 0.3s ease;
    backdrop-filter: blur(var(--glass-blur));
}

.app-search-input:focus {
    border-color: var(--accent-color);
    background: rgba(29, 120, 203, 0.05);
    box-shadow: 0 0 20px rgba(29, 120, 203, 0.2);
}

.app-search-input::placeholder {
    color: var(--text-secondary);
}

.categories-container {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.category-section {
    width: 100%;
}

.category-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    padding-left: 1rem;
    border-left: 3px solid var(--accent-color);
}

.app-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

@media (max-width: 1024px) {
    .app-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1.5rem;
    }
}

.app-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 2.5rem;
    padding: 2.5rem;
    position: relative;
    backdrop-filter: blur(var(--glass-blur));
    transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    text-decoration: none;
    color: inherit;
}

.app-card:hover {
    transform: translateY(-10px) scale(1.02);
    border-color: var(--accent-color);
    background: rgba(29, 120, 203, 0.05);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4), 0 0 20px var(--accent-glow);
}

.card-icon {
    font-size: 3rem;
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.app-card:hover .card-icon {
    transform: rotate(10deg);
    background: var(--accent-color);
}

.card-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    transition: color 0.3s;
}

.card-content p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.5;
}

.card-footer {
    margin-top: auto;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent-color);
    font-weight: 600;
    opacity: 0;
    transform: translateX(-10px);
    transition: all 0.3s ease;
}

.app-card:hover .card-footer {
    opacity: 1;
    transform: translateX(0);
}

.footer-hub {
    margin-top: 6rem;
    padding: 3rem 0;
    border-top: 1px solid var(--border-color);
    background: linear-gradient(to bottom, transparent, rgba(255, 255, 255, 0.02));
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    backdrop-filter: blur(10px);
}

.logout-btn {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    transition: all 0.3s ease;
    padding: 0.6rem 1.2rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
}

.logout-btn:hover {
    background: rgba(255, 69, 58, 0.1);
    border-color: rgba(255, 69, 58, 0.3);
    color: #ff453a;
    transform: translateY(-2px);
}

/* Language Switcher Styles */
.lang-switch-btn {
    opacity: 0.5;
    transition: all 0.3s ease;
}

.lang-switch-btn:hover {
    opacity: 0.8;
}

.lang-switch-btn.active {
    opacity: 1;
    background: var(--accent-color) !important;
    color: var(--bg-dark) !important;
    box-shadow: 0 0 10px var(--accent-glow);
}

/* Mobile Optimizations */
@media (max-width: 768px) {
    .hub-container {
        padding: 2rem 1.5rem;
    }

    header {
        margin-bottom: 3rem;
    }

    .logo-animation {
        width: 2.5rem !important;
        height: 2.5rem !important;
    }

    h1 {
        font-size: 2.25rem;
    }

    .subtitle {
        font-size: 0.8rem;
        letter-spacing: 0.15em;
    }

    .app-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .app-card {
        padding: 1.25rem;
        border-radius: 1.25rem;
        gap: 0.75rem;
    }

    .card-icon {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
        border-radius: 0.75rem;
    }

    .card-content h3 {
        font-size: 1.1rem;
    }

    .card-content p {
        font-size: 0.8rem;
        line-height: 1.4;
    }

    .footer-hub {
        padding: 2.5rem 0;
        flex-direction: column;
        gap: 1.5rem;
        margin-top: 4rem;
        width: 100%;
    }

    .card-footer {
        opacity: 1;
        transform: translateX(0);
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.75rem;
    }

    .hub-container {
        padding: 1rem;
    }

    .app-grid {
        gap: 0.75rem;
    }

    .app-card {
        padding: 1rem;
        border-radius: 1rem;
    }

    .card-icon {
        width: 40px;
        height: 40px;
        font-size: 1.25rem;
    }
}