/**
 * Template: Talks & Training Page (tmpl-talks-training)
 * ======================================================
 *
 * Layout and responsive styles for the Talks & Training overview page.
 * Covers the topic cards grid, card internals, and CTA section.
 *
 * Depends on:
 *   - custom-tokens.css (design tokens)
 *   - global-classes.css (.x-card, .x-icon-sticker, .x-section-soft, .x-section-warm, .x-container)
 *   - typography.css (headings, .x-highlight)
 *
 * Requirements: 17.1, 17.2, 17.3, 17.4, 23.2
 *
 * @package Xenopz
 */

/* =========================================================================
   TALKS HEADER
   ========================================================================= */

.x-talks-header {
    text-align: center;
    margin-bottom: var(--x-space-xl);
}

.x-talks-header h2 {
    margin: 0 0 var(--x-space-sm);
}

.x-talks-intro {
    font-size: 1.125rem;
    line-height: 1.6;
    color: var(--x-muted);
    max-width: 680px;
    margin: 0 auto;
}

/* =========================================================================
   TALKS TOPICS SECTION (energetic styling)
   Requirement 17.4: visually more energetic, but still professional
   ========================================================================= */

.x-talks-topics-section {
    padding: var(--x-space-2xl) 0;
}

/* =========================================================================
   TOPIC CARDS GRID
   ========================================================================= */

/**
 * .x-talks-grid
 * 2-column grid on desktop for topic cards (wider cards = more room for content).
 * Single column on tablet and mobile.
 */
.x-talks-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--x-space-lg);
}

/* =========================================================================
   TOPIC CARD (.x-card-topic)
   ========================================================================= */

/**
 * .x-card-topic
 * Extends .x-card base. Contains icon/title header, metadata list,
 * learning value description, and a CTA button.
 */
.x-card-topic {
    padding: var(--x-space-md) var(--x-space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--x-space-sm);
    transition: box-shadow 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
    position: relative;
}

.x-card-topic:hover {
    box-shadow: var(--x-shadow-hover);
    transform: translateY(-2px);
    border-color: var(--x-orange-500);
}

/* Energetic top accent bar */
.x-card-topic::before {
    content: '';
    position: absolute;
    top: 0;
    left: var(--x-space-md);
    right: var(--x-space-md);
    height: 3px;
    background: linear-gradient(90deg, var(--x-orange-500), var(--x-teal-700));
    border-radius: 0 0 2px 2px;
}

/* Card header: icon + title */
.x-card-topic__header {
    display: flex;
    align-items: center;
    gap: var(--x-space-sm);
}

.x-card-topic__title {
    font-family: var(--x-font-heading);
    font-weight: 800;
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    line-height: 1.2;
    color: var(--x-teal-900);
    margin: 0;
}

/* Metadata definition list */
.x-card-topic__meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--x-space-sm) var(--x-space-lg);
    margin: var(--x-space-xs) 0;
    padding: var(--x-space-xs) 0;
    border-top: 1px solid var(--x-border);
    border-bottom: 1px solid var(--x-border);
}

.x-card-topic__meta-item {
    display: flex;
    gap: 0.4em;
    align-items: baseline;
}

.x-card-topic__meta dt {
    font-family: var(--x-font-body);
    font-weight: 600;
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--x-teal-700);
    white-space: nowrap;
}

.x-card-topic__meta dd {
    font-family: var(--x-font-body);
    font-size: 0.9rem;
    color: var(--x-ink);
    margin: 0;
}

/* Learning value description */
.x-card-topic__learning {
    font-size: 0.9375rem;
    line-height: 1.6;
    color: var(--x-ink);
    flex-grow: 1;
    margin: 0;
}

/* CTA button within card */
.x-card-topic__cta {
    align-self: flex-start;
    margin-top: auto;
    padding-top: var(--x-space-xs);
}

/* =========================================================================
   CTA SECTION (reuses .x-cta-block from expertise.css pattern)
   ========================================================================= */

.x-talks-cta-section {
    padding: var(--x-space-2xl) 0;
}

.x-talks-cta-section .x-cta-block {
    text-align: center;
    max-width: 680px;
    margin: 0 auto;
}

.x-talks-cta-section .x-cta-block__heading {
    margin: 0 0 var(--x-space-sm);
}

.x-talks-cta-section .x-cta-block__text {
    font-size: 1.125rem;
    line-height: 1.6;
    color: var(--x-ink);
    margin: 0 0 var(--x-space-lg);
}

.x-talks-cta-section .x-cta-block__buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--x-space-sm);
    justify-content: center;
    align-items: center;
}

/* =========================================================================
   RESPONSIVE: TABLET (768px - 991px)
   ========================================================================= */

@media (max-width: 991px) {
    .x-talks-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--x-space-md);
    }
}

/* =========================================================================
   RESPONSIVE: MOBILE (< 768px)
   ========================================================================= */

@media (max-width: 767px) {
    .x-talks-grid {
        grid-template-columns: 1fr;
        gap: var(--x-space-md);
    }

    .x-talks-header {
        text-align: left;
        margin-bottom: var(--x-space-lg);
    }

    .x-talks-intro {
        max-width: 100%;
    }

    .x-card-topic {
        padding: var(--x-space-md);
    }

    .x-card-topic__meta {
        flex-direction: column;
        gap: var(--x-space-xs);
    }

    .x-talks-cta-section .x-cta-block {
        text-align: left;
    }

    .x-talks-cta-section .x-cta-block__buttons {
        flex-direction: column;
        align-items: stretch;
    }

    .x-talks-cta-section .x-cta-block__buttons .x-btn-primary,
    .x-talks-cta-section .x-cta-block__buttons .x-btn-secondary {
        justify-content: center;
        text-align: center;
    }
}