/* ========================================
   AI Report — Dashboard Styles
   ======================================== */

/* ---- Base ---- */
:root {
    --color-bg: #f4f6f9;
    --color-card-bg: #ffffff;
    --color-accent: #0dcaf0;
    --color-accent-dark: #0aa2c0;
    --color-text: #212529;
    --color-text-muted: #6c757d;
    --color-border: #dee2e6;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --radius: 10px;
    --transition: all 0.2s ease;
}

body {
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* Accessibility: visually hidden but available to screen readers */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ---- Navbar ---- */
.navbar {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%) !important;
}

.navbar-brand {
    font-size: 1.3rem;
    letter-spacing: -0.5px;
}

/* ---- Category Pills ---- */
.category-pill {
    border-radius: 20px;
    padding: 0.3rem 0.9rem;
    font-size: 0.85rem;
    font-weight: 500;
    border: 1px solid var(--color-border);
    background: var(--color-card-bg);
    color: var(--color-text-muted);
    transition: var(--transition);
    white-space: nowrap;
}

.category-pill:hover {
    background: #e9ecef;
    color: var(--color-text);
}

.category-pill.active {
    background: var(--color-accent);
    color: #000;
    border-color: var(--color-accent);
}

.category-pill .badge {
    font-size: 0.7rem;
    padding: 0.2em 0.5em;
}

/* Videos pill — YouTube red when active */
.videos-pill.active {
    background: #ff0000 !important;
    color: #fff !important;
    border-color: #ff0000 !important;
}

/* ---- Region Tabs ---- */
.region-pill {
    border-radius: 20px;
    padding: 0.35rem 1rem;
    font-size: 0.85rem;
    font-weight: 600;
    border: 1px solid var(--color-border);
    background: var(--color-card-bg);
    color: var(--color-text-muted);
    transition: var(--transition);
    white-space: nowrap;
}

.region-pill:hover {
    background: #e9ecef;
    color: var(--color-text);
}

.region-pill.active {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: #fff;
    border-color: transparent;
}

.region-pill .badge {
    font-size: 0.7rem;
    padding: 0.2em 0.5em;
}

.region-flag {
    font-size: 1rem;
    line-height: 1;
}

/* ---- Search ---- */
.input-group {
    border-radius: 25px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.input-group .form-control {
    padding: 0.6rem 1rem;
    border-radius: 0 25px 25px 0;
}

.input-group .input-group-text {
    border-radius: 25px 0 0 25px;
    padding: 0.6rem 1rem;
}

.input-group .form-control:focus {
    box-shadow: 0 0 0 3px rgba(13, 202, 240, 0.25);
    border-color: var(--color-accent);
}

/* ---- Article Cards ---- */
.card {
    border: none;
    border-radius: var(--radius);
    background: var(--color-card-bg);
    transition: var(--transition);
}

.hover-shadow:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.transition {
    transition: var(--transition);
}

.card-title a:hover {
    color: var(--color-accent-dark) !important;
}

.article-summary {
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ---- Category Badges ---- */
.category-badge {
    font-size: 0.7rem;
    padding: 0.3em 0.6em;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge.investments---funding {
    background-color: #28a745;
    color: #fff;
}

.badge.new-models---products {
    background-color: #0d6efd;
    color: #fff;
}

.badge.policy---regulation {
    background-color: #fd7e14;
    color: #fff;
}

.badge.research---papers {
    background-color: #6f42c1;
    color: #fff;
}

.badge.industry-news {
    background-color: #6c757d;
    color: #fff;
}

.source-badge {
    font-size: 0.75rem;
    opacity: 0.8;
}

/* ---- Buttons ---- */
#btn-scrape {
    border-radius: 20px;
    transition: var(--transition);
}

#btn-scrape:hover {
    background: var(--color-accent);
    color: #000;
    border-color: var(--color-accent);
}

#btn-scrape.spinning i {
    animation: spin 1s linear infinite;
}

#btn-load-more {
    border-radius: 25px;
    padding: 0.5rem 1.5rem;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ---- Footer ---- */
footer {
    border-top: 1px solid rgba(255,255,255,0.1);
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
    .navbar-brand {
        font-size: 1.1rem;
    }
    .card-body {
        padding: 1rem;
    }
    .article-summary {
        -webkit-line-clamp: 2;
    }
}

/* ---- Scrollbar (webkit) ---- */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #bbb;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #999;
}

/* ---- Animations ---- */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.article-card {
    animation: fadeIn 0.3s ease forwards;
}

/* ---- Video Cards ---- */
.video-thumbnail {
    aspect-ratio: 16/9;
    object-fit: cover;
    border-radius: var(--radius) var(--radius) 0 0;
}

.video-play-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: rgba(255, 255, 255, 0.85);
    font-size: 3rem;
    text-shadow: 0 2px 8px rgba(0,0,0,0.5);
    transition: var(--transition);
    pointer-events: none;
}

.card:hover .video-play-overlay {
    color: #ff0000;
    transform: translate(-50%, -50%) scale(1.1);
}

/* ---- Ad Placements ---- */
.ad-banner, .ad-inline {
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1rem;
    text-align: center;
    min-height: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
}