/* ============================================================
   Claritas Academics — Resources Page Styles
   ============================================================ */

/* ---------------- Page Header ---------------- */
.page-header {
    padding: 12rem 5% 4.5rem;
    text-align: center;
    background: linear-gradient(135deg, #fafafa 0%, #f0f0f0 100%);
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(201, 169, 97, 0.12) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.page-title {
    font-family: 'Cormorant Garamond', serif;
    font-size: clamp(3rem, 6vw, 5rem);
    font-weight: 400;
    letter-spacing: 3px;
    color: var(--primary);
    margin-bottom: 1.2rem;
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.2s forwards;
}

.page-subtitle {
    font-size: clamp(1.05rem, 2vw, 1.25rem);
    color: var(--light-text);
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.4s forwards;
}

/* ---------------- Filter Bar ---------------- */
.filter-bar {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2.5rem 5% 2rem;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.5s forwards;
}

.filter-pill {
    border: 1.5px solid rgba(15, 76, 117, 0.2);
    background: var(--white);
    color: var(--accent);
    padding: 0.65rem 1.4rem;
    border-radius: 50px;
    font-family: 'Inter', sans-serif;
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.3px;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.filter-pill:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
}

.filter-pill.active {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--white);
    box-shadow: 0 8px 20px rgba(15, 76, 117, 0.25);
}

/* ---------------- Resources Section & Grid ---------------- */
.resources-section {
    max-width: 1300px;
    margin: 0 auto;
    padding: 1rem 5% 7rem;
}

.resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: 2.5rem;
}

/* ---------------- Resource Card ---------------- */
.resource-card {
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.07);
    border: 1px solid rgba(0, 0, 0, 0.05);
    display: flex;
    flex-direction: column;
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s ease forwards;
}

.resource-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.12);
    border-color: rgba(201, 169, 97, 0.3);
}

.resource-card.is-hidden {
    display: none;
}

/* Card Visual Header */
.resource-card-header {
    height: 190px;
    position: relative;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f4c75 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    overflow: hidden;
    color: white;
}

.resource-card-header.gold-theme {
    background: linear-gradient(135deg, #1a1a2e 0%, #2a2012 40%, #c9a961 100%);
}

.resource-card-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at top right, rgba(201, 169, 97, 0.25), transparent 70%);
}

.resource-card-icon {
    font-size: 3.5rem;
    position: relative;
    z-index: 2;
    filter: drop-shadow(0 4px 10px rgba(0, 0, 0, 0.3));
    transition: transform 0.3s ease;
}

.resource-card:hover .resource-card-icon {
    transform: scale(1.08) rotate(-3deg);
}

.resource-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: rgba(255, 255, 255, 0.18);
    backdrop-filter: blur(10px);
    color: #ffffff;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    padding: 0.4rem 0.9rem;
    border-radius: 50px;
    border: 1px solid rgba(255, 255, 255, 0.25);
    z-index: 3;
}

.resource-format-tag {
    position: absolute;
    bottom: 1rem;
    right: 1rem;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(6px);
    color: #e2e8f0;
    font-size: 0.75rem;
    font-weight: 500;
    padding: 0.3rem 0.75rem;
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    z-index: 3;
}

/* Card Body */
.resource-card-body {
    padding: 2rem 2rem 1.75rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.resource-meta {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.82rem;
    color: var(--light-text);
    font-weight: 500;
    margin-bottom: 0.85rem;
}

.resource-meta .dot {
    width: 4px;
    height: 4px;
    background: var(--gold);
    border-radius: 50%;
    display: inline-block;
}

.resource-card-title {
    font-family: 'Cormorant Garamond', serif;
    font-size: 1.65rem;
    font-weight: 600;
    line-height: 1.3;
    color: var(--primary);
    margin-bottom: 0.85rem;
    letter-spacing: 0.3px;
}

.resource-card-excerpt {
    font-size: 0.92rem;
    line-height: 1.7;
    color: var(--light-text);
    margin-bottom: 1.25rem;
}

/* Key Highlights / Features List */
.resource-features {
    list-style: none;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: rgba(15, 76, 117, 0.04);
    border-radius: 12px;
    border-left: 3px solid var(--accent);
}

.resource-features li {
    font-size: 0.85rem;
    color: var(--text);
    margin-bottom: 0.4rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.resource-features li:last-child {
    margin-bottom: 0;
}

.feature-check {
    color: var(--accent);
    font-weight: bold;
}

/* Author byline */
.resource-byline {
    margin-top: auto;
    padding-top: 1.25rem;
    border-top: 1px solid rgba(0, 0, 0, 0.06);
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.25rem;
    font-size: 0.85rem;
    color: var(--light-text);
}

.resource-author {
    font-weight: 600;
    color: var(--primary);
}

/* Actions */
.resource-actions {
    display: flex;
    gap: 0.75rem;
}

.btn-open-pdf {
    flex: 2;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.85rem 1.2rem;
    background: var(--accent);
    color: var(--white);
    border: none;
    border-radius: 10px;
    font-size: 0.92rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(15, 76, 117, 0.2);
}

.btn-open-pdf:hover {
    background: #0b3756;
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(15, 76, 117, 0.3);
}

.btn-download-pdf {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.85rem 1rem;
    background: transparent;
    color: var(--accent);
    border: 1.5px solid var(--accent);
    border-radius: 10px;
    font-size: 0.92rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-download-pdf:hover {
    background: rgba(15, 76, 117, 0.06);
    transform: translateY(-2px);
}

/* ---------------- Empty State ---------------- */
.empty-state {
    display: none;
    text-align: center;
    padding: 5rem 1rem;
    font-size: 1.1rem;
    color: var(--light-text);
}

.empty-state.is-visible {
    display: block;
}

/* ---------------- Responsive Styles ---------------- */
@media (max-width: 768px) {
    .page-header {
        padding: 9rem 5% 3.5rem;
    }

    .resources-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .resource-actions {
        flex-direction: column;
    }

    .btn-open-pdf,
    .btn-download-pdf {
        width: 100%;
        flex: none;
    }
}