/* ===============================================
   CIO Page Styles - 심현수의 인사이트
   Professional & Authoritative (BlackRock/Bridgewater style)
   =============================================== */

/* =============== HERO SECTION =============== */
.cio-hero {
    background: var(--gradient-primary);
    color: var(--white);
    padding: 120px 0 80px;
    overflow: hidden;
    position: relative;
}

.cio-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at 70% 50%, rgba(59, 130, 246, 0.15) 0%, transparent 60%);
    pointer-events: none;
}

.cio-hero__grid {
    display: grid;
    grid-template-columns: 60% 40%;
    gap: var(--spacing-xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.cio-hero__text {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.cio-hero__label {
    display: inline-block;
    font-size: var(--small-font-size);
    font-weight: var(--font-medium);
    color: rgba(255, 255, 255, 0.7);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.cio-hero__name {
    font-size: clamp(3rem, 6vw, 4.5rem);
    font-weight: var(--font-bold);
    color: var(--white);
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.cio-hero__quote {
    font-size: clamp(1.125rem, 2vw, 1.375rem);
    font-weight: var(--font-light);
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.6;
    margin: var(--spacing-sm) 0;
    font-style: italic;
}

.cio-hero__badges {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: var(--spacing-sm);
}

.cio-hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 100px;
    font-size: var(--smaller-font-size);
    font-weight: var(--font-medium);
    color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    transition: var(--transition-fast);
}

.cio-hero__badge i {
    font-size: 0.8em;
    color: var(--primary-blue-light);
}

.cio-hero__badge:hover {
    background: rgba(255, 255, 255, 0.18);
    border-color: rgba(255, 255, 255, 0.35);
}

/* Career timeline in hero */
.cio-hero__career {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
}

.cio-hero__career-item {
    display: flex;
    align-items: baseline;
    gap: 12px;
    font-size: var(--small-font-size);
    color: rgba(255, 255, 255, 0.75);
}

.cio-hero__career-period {
    min-width: 100px;
    font-weight: var(--font-semi-bold);
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.8125rem;
}

.cio-hero__career-role {
    color: rgba(255, 255, 255, 0.85);
}

.cio-hero__photo {
    display: flex;
    justify-content: center;
    align-items: flex-end;
}

.cio-hero__img {
    max-width: 320px;
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    object-fit: cover;
}

/* =============== FEATURED LETTER =============== */
.cio-featured {
    background: var(--white);
}

.cio-featured__content {
    max-width: 800px;
    margin: 0 auto;
}

.cio-featured__loading {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--neutral-blue);
    font-size: var(--normal-font-size);
}

.cio-featured__card {
    background: var(--white);
    border: 1px solid var(--secondary-medium-gray);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
}

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

.cio-featured__date {
    display: inline-block;
    font-size: var(--smaller-font-size);
    font-weight: var(--font-medium);
    color: var(--primary-blue-accent);
    margin-bottom: var(--spacing-sm);
    letter-spacing: 0.02em;
}

.cio-featured__title {
    font-size: var(--h2-font-size);
    font-weight: var(--font-semi-bold);
    color: var(--primary-deep-navy);
    line-height: 1.35;
    margin-bottom: var(--spacing-md);
}

.cio-featured__summary {
    font-size: var(--normal-font-size);
    color: var(--secondary-dark-gray);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.cio-featured__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: var(--spacing-lg);
}

.cio-featured__tag {
    display: inline-block;
    padding: 4px 12px;
    background: var(--secondary-light-gray);
    border-radius: 100px;
    font-size: var(--smaller-font-size);
    color: var(--neutral-blue);
    font-weight: var(--font-medium);
}

.cio-featured__action {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: var(--normal-font-size);
    font-weight: var(--font-semi-bold);
    color: var(--primary-blue-accent);
    text-decoration: none;
    transition: var(--transition-fast);
    padding: 12px 24px;
    border: 2px solid var(--primary-blue-accent);
    border-radius: var(--radius-md);
}

.cio-featured__action:hover {
    background: var(--primary-blue-accent);
    color: var(--white);
}

.cio-featured__action i {
    transition: transform var(--transition-fast);
}

.cio-featured__action:hover i {
    transform: translateX(4px);
}

/* Empty state */
.cio-featured__empty {
    text-align: center;
    padding: var(--spacing-xxl) var(--spacing-lg);
    background: var(--secondary-light-gray);
    border-radius: var(--radius-lg);
}

.cio-featured__empty-icon {
    font-size: 3rem;
    color: var(--secondary-medium-gray);
    margin-bottom: var(--spacing-md);
}

.cio-featured__empty-text {
    font-size: var(--normal-font-size);
    color: var(--neutral-blue);
}

/* =============== ARCHIVE SECTION =============== */
.cio-archive__list {
    max-width: 800px;
    margin: 0 auto;
}

.cio-archive__loading {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--neutral-blue);
    font-size: var(--normal-font-size);
}

.cio-archive__item {
    display: block;
    padding: var(--spacing-lg) 0;
    border-bottom: 1px solid var(--secondary-medium-gray);
    text-decoration: none;
    color: inherit;
    transition: var(--transition-fast);
}

.cio-archive__item:first-child {
    padding-top: 0;
}

.cio-archive__item:hover {
    opacity: 0.85;
}

.cio-archive__item:hover .cio-archive__title {
    color: var(--primary-blue-accent);
}

.cio-archive__date {
    display: inline-block;
    font-size: var(--smaller-font-size);
    font-weight: var(--font-medium);
    color: var(--primary-blue-accent);
    margin-bottom: 6px;
    letter-spacing: 0.02em;
}

.cio-archive__title {
    font-size: var(--h3-font-size);
    font-weight: var(--font-semi-bold);
    color: var(--primary-deep-navy);
    line-height: 1.4;
    margin-bottom: 8px;
    transition: color var(--transition-fast);
}

.cio-archive__summary {
    font-size: var(--small-font-size);
    color: var(--neutral-blue);
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 10px;
}

.cio-archive__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.cio-archive__tag {
    display: inline-block;
    padding: 3px 10px;
    background: var(--white);
    border: 1px solid var(--secondary-medium-gray);
    border-radius: 100px;
    font-size: 0.8rem;
    color: var(--neutral-blue);
    font-weight: var(--font-medium);
}

/* Empty state for archive */
.cio-archive__empty {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--neutral-blue);
    font-size: var(--normal-font-size);
}

/* Load more button */
.cio-archive__more {
    text-align: center;
    margin-top: var(--spacing-xl);
}

/* =============== MEDIA SECTION =============== */
.cio-media {
    background: var(--secondary-light-gray);
}

.cio-media__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.cio-media__card {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    transition: transform 0.3s, box-shadow 0.3s;
}

.cio-media__card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

/* Thumbnail */
.cio-media__thumb-wrap {
    position: relative;
    display: block;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: #1a1a2e;
}

.cio-media__thumb {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.cio-media__card:hover .cio-media__thumb {
    transform: scale(1.05);
}

/* Play button overlay */
.cio-media__play {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 56px;
    height: 56px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: var(--primary-deep-navy);
    transition: transform 0.3s, background 0.3s;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

.cio-media__card:hover .cio-media__play {
    transform: translate(-50%, -50%) scale(1.1);
    background: var(--white);
}

/* Channel badge */
.cio-media__badge {
    position: absolute;
    top: 12px;
    left: 12px;
    background: rgba(0, 0, 0, 0.75);
    color: var(--white);
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    backdrop-filter: blur(4px);
}

/* Duration badge */
.cio-media__duration {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background: rgba(0, 0, 0, 0.8);
    color: var(--white);
    padding: 2px 8px;
    border-radius: 3px;
    font-size: 0.75rem;
    font-weight: 500;
}

/* Card body */
.cio-media__body {
    padding: 1.25rem 1.5rem 1.5rem;
}

.cio-media__title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--primary-deep-navy);
    line-height: 1.4;
    margin-bottom: 0.375rem;
}

.cio-media__date {
    font-size: 0.8125rem;
    color: #6B7280;
    margin-bottom: 0.75rem;
}

.cio-media__summary {
    font-size: 0.9375rem;
    color: var(--secondary-dark-gray);
    line-height: 1.7;
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Key points */
.cio-media__points {
    list-style: none;
    padding: 0;
    margin: 0 0 1rem;
    border-left: 3px solid var(--primary-blue-accent);
    padding-left: 1rem;
}

.cio-media__points li {
    font-size: 0.875rem;
    color: var(--secondary-dark-gray);
    padding: 0.25rem 0;
    line-height: 1.5;
    position: relative;
}

.cio-media__points li::before {
    content: "\2022";
    color: var(--primary-blue-accent);
    font-weight: 700;
    margin-right: 0.5rem;
}

/* Tags */
.cio-media__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
    margin-bottom: 1rem;
}

.cio-media__tag {
    display: inline-block;
    padding: 0.125rem 0.5rem;
    background: rgba(59, 130, 246, 0.08);
    color: var(--primary-blue-accent);
    border-radius: 3px;
    font-size: 0.75rem;
    font-weight: 500;
}

/* View link */
.cio-media__link {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary-blue-accent);
    text-decoration: none;
    transition: gap 0.2s;
}

.cio-media__link:hover {
    gap: 0.625rem;
}

.cio-media__link i {
    font-size: 0.75rem;
}

/* Loading & Empty states */
.cio-media__loading {
    grid-column: 1 / -1;
    display: flex;
    justify-content: center;
    padding: 3rem;
}

.cio-media__spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--secondary-medium-gray);
    border-top-color: var(--primary-blue-accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.cio-media__empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 3rem;
    color: #6B7280;
    text-align: center;
}

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

/* =============== RESPONSIVE: TABLET =============== */
@media screen and (max-width: 1024px) {
    .cio-hero__grid {
        grid-template-columns: 55% 45%;
        gap: var(--spacing-lg);
    }

    .cio-hero__img {
        max-width: 280px;
    }
}

/* =============== RESPONSIVE: MOBILE =============== */
@media screen and (max-width: 768px) {
    .cio-hero {
        padding: 100px 0 60px;
    }

    .cio-hero__grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
        text-align: center;
    }

    .cio-hero__photo {
        order: -1;
        justify-content: center;
    }

    .cio-hero__img {
        max-width: 220px;
        border-radius: var(--radius-lg);
    }

    .cio-hero__text {
        align-items: center;
    }

    .cio-hero__quote {
        text-align: center;
    }

    .cio-hero__badges {
        justify-content: center;
    }

    .cio-hero__badge {
        font-size: 0.8rem;
        padding: 6px 12px;
    }

    .cio-hero__career {
        align-items: center;
    }

    .cio-hero__career-item {
        flex-direction: column;
        align-items: center;
        gap: 2px;
        text-align: center;
    }

    .cio-hero__career-period {
        min-width: unset;
    }

    /* Featured */
    .cio-featured__card {
        padding: var(--spacing-lg);
    }

    .cio-featured__title {
        font-size: var(--h3-font-size);
    }

    .cio-featured__action {
        width: 100%;
        justify-content: center;
        padding: 14px 24px;
    }

    /* Archive */
    .cio-archive__title {
        font-size: calc(var(--h3-font-size) - 0.125rem);
    }

    .cio-archive__item {
        padding: var(--spacing-md) 0;
    }

    /* Media */
    .cio-media__grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .cio-media__body {
        padding: 1rem 1.25rem 1.25rem;
    }

    .cio-media__title {
        font-size: 1rem;
    }
}

/* =============== RESPONSIVE: SMALL MOBILE =============== */
@media screen and (max-width: 480px) {
    .cio-hero {
        padding: 90px 0 48px;
    }

    .cio-hero__name {
        font-size: 2.5rem;
    }

    .cio-hero__img {
        max-width: 180px;
    }

    .cio-hero__badge {
        font-size: 0.75rem;
        padding: 5px 10px;
    }

    .cio-featured__card {
        padding: var(--spacing-md);
    }
}