/* =========================================
   ThinkLab Design System
   ========================================= */
:root {
    --tl-bg: #08111f;
    --tl-bg-card: #0c1d36;
    --tl-bg-hover: #102445;
    --tl-border: rgba(255,255,255,0.08);
    --tl-text: #c8dcf5;
    --tl-text-muted: #7a9bb5;
    --tl-text-tag: #6b8ba8;
    /* Module Accent Colors */
    --tl-c1: #f87171; /* AI News          */
    --tl-c2: #22d3ee; /* AI Articles      */
    --tl-c3: #c084fc; /* Faith & Reason   */
    --tl-c4: #facc15; /* AI Regulation    */
    --tl-c5: #4f9cf9; /* Whitepapers      */
    --tl-c6: #34d399; /* Data & Stats     */
    --tl-c7: #a78bfa; /* Startups         */
    --tl-c8: #fb923c; /* Business Leaders */
}

/* Base Typography & Layout */
body {
    background-color: var(--tl-bg);
    color: var(--tl-text);
    font-family: 'Inter', sans-serif;
    font-weight: 300;
    min-height: 100vh;
}

h1, h2, h3, h4, h5, h6, .tl-title {
    font-family: 'Cormorant Garamond', serif;
    font-weight: 500;
    color: var(--tl-text);
}

/* VCard Grid (4x2 Responsive) */
.tl-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    padding: 40px 0;
}

@media (max-width: 992px) {
    .tl-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .tl-grid {
        grid-template-columns: 1fr;
    }
}

/* VCard Component */
.tl-card {
    background-color: var(--tl-bg-card);
    border: 1px solid var(--tl-border);
    border-radius: 10px;
    padding: 16px 14px;
    position: relative;
    overflow: hidden;
    transition: background-color 0.3s ease, transform 0.2s ease;
    text-decoration: none;
    display: flex;
    flex-direction: column;
    height: 100%;
}

    .tl-card:hover {
        background-color: var(--tl-bg-hover);
        transform: translateY(-2px);
    }

    /* Dynamic Top Accent Bar (Uses inline --accent-color variable) */
    .tl-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 2px;
        background-color: var(--accent-color);
    }

.tl-card-icon {
    font-size: 1.5rem;
    margin-bottom: 12px;
    color: var(--accent-color);
}

.tl-card-tag {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--tl-text-tag);
    margin-bottom: 8px;
    font-weight: 500;
}

.tl-card-title {
    font-size: 1.4rem;
    margin-bottom: 10px;
    line-height: 1.3;
}

.tl-card-desc {
    font-size: 0.85rem;
    color: var(--tl-text-muted);
    line-height: 1.5;
    flex-grow: 1;
}

/* Language Toggle Button */
.tl-lang-btn {
    background: transparent;
    border: 1px solid var(--tl-border);
    color: var(--tl-text);
    padding: 4px 10px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

    .tl-lang-btn:hover {
        background-color: var(--tl-bg-hover);
        border-color: var(--tl-text-muted);
    }

    .tl-lang-btn img {
        width: 18px;
        height: 12px;
        border-radius: 2px;
        object-fit: cover;
    }

/* Navbar & Modal Overrides */
.tl-navbar {
    background-color: rgba(8, 17, 31, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--tl-border);
}

.modal-content {
    background-color: var(--tl-bg-card);
    border: 1px solid var(--tl-border);
    color: var(--tl-text);
}

.modal-header, .modal-footer {
    border-color: var(--tl-border);
}

.btn-close {
    filter: invert(1) grayscale(100%) brightness(200%);
}

/* =========================================
   Coming Soon / In Progress Page
   ========================================= */
.tl-coming-soon {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 65vh;
    text-align: center;
    padding: 40px 20px;
}

.tl-coming-soon-icon {
    font-size: 4rem;
    color: var(--tl-text-muted);
    margin-bottom: 24px;
    opacity: 0.7;
    animation: tl-pulse 3s infinite ease-in-out;
}

@keyframes tl-pulse {
    0%, 100% {
        opacity: 0.5;
        transform: scale(1);
    }

    50% {
        opacity: 0.9;
        transform: scale(1.05);
    }
}

.tl-coming-soon-title {
    font-size: 2.5rem;
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}

.tl-coming-soon-desc {
    font-size: 1.05rem;
    color: var(--tl-text-muted);
    max-width: 500px;
    margin-bottom: 32px;
    line-height: 1.6;
}

.tl-btn-back {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    background-color: var(--tl-bg-card);
    border: 1px solid var(--tl-border);
    color: var(--tl-text);
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.2s ease;
}

    .tl-btn-back:hover {
        background-color: var(--tl-bg-hover);
        border-color: var(--tl-text-muted);
        color: var(--tl-text);
        transform: translateY(-1px);
    }


/* =========================================
   Navbar Brand (ThinkLab Logo)
   ========================================= */
.tl-brand {
    color: var(--tl-text) !important; /* #c8dcf5 por defecto */
    text-decoration: none !important;
    font-family: 'Cormorant Garamond', serif;
    font-weight: 600;
    transition: color 0.3s ease, letter-spacing 0.3s ease;
}

    .tl-brand:hover {
        color: #ffffff !important; /* Blanco puro al hacer hover para máximo contraste */
        letter-spacing: 0.8px; /* Expansión sutil que da sensación premium */
        text-shadow: 0 0 12px rgba(255, 255, 255, 0.1); /* Resplandor casi imperceptible */
    }