/* Video Sections & New Component Styles
 * Following the :AtomicDesignPattern and :DesignTokenSystem
 * Optimized for mobile-first responsive design
 */

/* ===== Hero Kicker ===== */
.hero-kicker {
    font-size: var(--font-size-small);
    font-weight: var(--font-weight-medium);
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-wide);
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
    opacity: 0.9;
}

/* ===== Section Labels ===== */
.section-label {
    display: inline-block;
    font-size: var(--font-size-micro);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-primary);
    background: var(--color-primary-10);
    padding: var(--space-2xs) var(--space-sm);
    border-radius: var(--border-radius-pill);
    margin-bottom: var(--space-md);
}

.video-section-label {
    display: inline-block;
    font-size: var(--font-size-micro);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

/* ===== Video Sections ===== */
.video-section {
    padding: var(--space-3xl) 0;
    position: relative;
    overflow: hidden;
}

.video-section-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: grid;
    gap: var(--space-xl);
    align-items: center;
}

.video-section-content {
    text-align: center;
}

.video-section-title {
    font-size: var(--font-size-h2);
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
    margin-bottom: var(--space-md);
    line-height: var(--line-height-tight);
}

.video-section-description {
    font-size: var(--font-size-body);
    color: var(--color-text-secondary);
    line-height: var(--line-height-loose);
    max-width: 600px;
    margin: 0 auto;
}

/* Video Placeholder */
.video-placeholder {
    position: relative;
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    aspect-ratio: 16 / 9;
    background: linear-gradient(135deg, var(--color-background-secondary) 0%, #eef2f7 100%);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: transform var(--duration-normal) var(--easing-standard),
                box-shadow var(--duration-normal) var(--easing-standard);
}

.video-placeholder:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-level-3);
}

.video-placeholder-inner {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--space-md);
}

.video-placeholder-icon {
    font-size: 4rem;
    color: var(--color-primary);
    margin-bottom: var(--space-md);
    opacity: 0.8;
    transition: transform var(--duration-normal) var(--easing-standard),
                opacity var(--duration-normal) var(--easing-standard);
}

.video-placeholder:hover .video-placeholder-icon {
    transform: scale(1.1);
    opacity: 1;
}

.video-placeholder-text {
    font-size: var(--font-size-body);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xs);
}

.video-placeholder-duration {
    font-size: var(--font-size-small);
    color: var(--color-text-secondary);
    opacity: 0.7;
}

/* Video Section Variants */
.video-section-welcome {
    background: var(--color-background);
}

.video-section-philosophy {
    background: var(--color-background-secondary);
}

.video-section-ai {
    background: var(--color-background);
}

/* ===== Philosophy Principles ===== */
.philosophy-principles {
    max-width: var(--container-max-width);
    margin: var(--space-xl) auto 0;
    padding: 0 var(--container-padding);
    display: grid;
    gap: var(--space-lg);
}

.philosophy-principle {
    text-align: center;
    padding: var(--space-lg);
    background: var(--color-background);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--color-border);
    transition: transform var(--duration-normal) var(--easing-standard),
                box-shadow var(--duration-normal) var(--easing-standard);
}

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

.philosophy-principle h3 {
    font-size: var(--font-size-h4);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    margin-bottom: var(--space-sm);
}

.philosophy-principle p {
    font-size: var(--font-size-body);
    color: var(--color-text-secondary);
    line-height: var(--line-height-normal);
    margin: 0;
}

/* ===== AI Principles ===== */
.ai-principles {
    max-width: var(--container-max-width);
    margin: var(--space-xl) auto 0;
    padding: 0 var(--container-padding);
    display: grid;
    gap: var(--space-lg);
}

.ai-principle {
    text-align: center;
    padding: var(--space-lg);
    background: var(--color-background-secondary);
    border-radius: var(--border-radius-lg);
    transition: transform var(--duration-normal) var(--easing-standard);
}

.ai-principle:hover {
    transform: translateY(-2px);
}

.ai-principle-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--space-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary-10);
    border-radius: var(--border-radius-circle);
    color: var(--color-primary);
    font-size: 1.5rem;
}

.ai-principle h3 {
    font-size: var(--font-size-h5);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    margin-bottom: var(--space-sm);
}

.ai-principle p {
    font-size: var(--font-size-body);
    color: var(--color-text-secondary);
    line-height: var(--line-height-normal);
    margin: 0;
}

/* ===== Challenge Section ===== */
.challenge-section {
    background: var(--color-background-secondary);
}

.challenge-section .content-block-subtitle-large {
    font-size: var(--font-size-h5);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.challenge-points {
    display: grid;
    gap: var(--space-lg);
    margin-top: var(--space-xl);
}

.challenge-point {
    display: grid;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: var(--color-background);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--color-border);
    transition: transform var(--duration-normal) var(--easing-standard),
                box-shadow var(--duration-normal) var(--easing-standard);
}

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

.challenge-point-number {
    font-size: var(--font-size-micro);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    letter-spacing: 0.05em;
}

.challenge-point-title {
    font-size: var(--font-size-h4);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    margin: 0;
    line-height: var(--line-height-tight);
}

.challenge-point-description {
    font-size: var(--font-size-body);
    color: var(--color-text-secondary);
    line-height: var(--line-height-loose);
    margin: 0;
}

/* ===== Feature Cards Enhancement ===== */
.feature-details {
    margin-top: var(--space-md);
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-border);
    list-style: none;
    padding-left: 0;
}

.feature-details li {
    font-size: var(--font-size-small);
    color: var(--color-text-secondary);
    padding: var(--space-2xs) 0;
    padding-left: var(--space-md);
    position: relative;
}

.feature-details li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    background: var(--color-primary-30);
    border-radius: var(--border-radius-circle);
}

/* ===== Responsive Styles ===== */

/* Tablet and up */
@media (min-width: 768px) {
    .video-section-container {
        grid-template-columns: 1fr 1fr;
        text-align: left;
    }

    .video-section-content {
        text-align: left;
    }

    .video-section-description {
        margin: 0;
    }

    .philosophy-principles,
    .ai-principles {
        grid-template-columns: repeat(3, 1fr);
    }

    .challenge-points {
        grid-template-columns: repeat(3, 1fr);
    }

    .challenge-point {
        grid-template-rows: auto auto 1fr;
    }

    .video-placeholder-icon {
        font-size: 5rem;
    }
}

/* Desktop */
@media (min-width: 992px) {
    .video-section {
        padding: var(--space-3xl) 0;
    }

    .video-section-container {
        gap: var(--space-2xl);
    }

    .video-section-title {
        font-size: calc(var(--font-size-h2) * 1.1);
    }

    .video-section-description {
        font-size: var(--font-size-h5);
    }

    .philosophy-principle,
    .ai-principle {
        padding: var(--space-xl);
    }

    .challenge-point {
        padding: var(--space-xl);
    }
}

/* Large desktop */
@media (min-width: 1200px) {
    .video-section-container {
        gap: var(--space-3xl);
    }
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
    .video-placeholder,
    .video-placeholder-icon,
    .philosophy-principle,
    .ai-principle,
    .challenge-point {
        transition: none;
    }

    .video-placeholder:hover,
    .philosophy-principle:hover,
    .ai-principle:hover,
    .challenge-point:hover {
        transform: none;
    }
}

/* ===== Print Styles ===== */
@media print {
    .video-section {
        page-break-inside: avoid;
    }

    .video-placeholder {
        border: 2px solid #ccc;
    }

    .video-placeholder-icon {
        display: none;
    }

    .video-placeholder-text {
        font-weight: bold;
    }
}