/* ========================================
   ABOUT PAGE
======================================== */

.about_page {
    overflow-x: hidden;
}

.about_section {
    padding-block: var(--space-2xl);
}


/* ========================================
   共用區塊標題
======================================== */

.section_heading {
    width: min(720px, 100%);
    margin: 0 auto var(--space-xl);
    text-align: center;
}

.section_heading h2 {
    margin: 0.25em 0 0.4em;
}

.section_heading p:last-child {
    margin-inline: auto;
    color: var(--color-text-muted);
    line-height: 1.8;
}


/* ========================================
   HERO
======================================== */

.about_hero {
    padding-block:
        calc(var(--space-2xl) + 32px)
        var(--space-2xl);
}

.about_hero_inner {
    display: grid;
    grid-template-columns:
        minmax(280px, 0.9fr)
        minmax(320px, 1.1fr);
    align-items: center;
    gap: clamp(40px, 7vw, 100px);
}

.about_hero_image {
    position: relative;
    overflow: hidden;

    aspect-ratio: 1 / 1;
    min-height: 0;

    border: 1px solid var(--color-border);
    background: var(--color-surface);
    
    box-shadow: 0px 4px 10px rgba(0, 0, 0, 0.1);
    box-shadow: 0px 4px 10px rgba(0, 0, 0, 0.1);
    box-shadow: 0px 4px 10px rgba(0, 0, 0, 0.1);
}

.about_hero_image::after {
    content: "";
    position: absolute;
    inset: 0;
    background:
        linear-gradient(
            180deg,
            transparent 55%,
            rgba(0, 0, 0, 0.48)
        );
    pointer-events: none;
}

.about_hero_image img {
    width: 100%;
    height: 100%;
    min-height: inherit;
    display: block;
    object-fit: contain;
}

.about_hero_content {
    max-width: 680px;
}

.about_hero_content h1 {
    margin: 0.18em 0;
    font-size: clamp(3rem, 7vw, 6.5rem);
    line-height: 0.95;
    letter-spacing: -0.055em;
}

.about_hero_lead {
    margin: 1.2em 0 0;
    font-size: clamp(1.35rem, 2.6vw, 2.2rem);
    font-weight: 700;
    line-height: 1.45;
}

.about_hero_text {
    max-width: 620px;
    margin-top: 1.5rem;
    color: var(--color-text-muted);
    font-size: 1.05rem;
    line-height: 1.9;
}

.about_hero_actions,
.about_cta_actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: var(--space-lg);
    justify-items:center;
    justify-content: center;
}


/* ========================================
   BUTTON
======================================== */

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 9px;

    min-height: 46px;
    padding: 0 20px;

    border: 1px solid var(--color-border);
    border-radius: var(--radius-pill);

    color: var(--color-text);
    text-decoration: none;

    transition:
        transform var(--transition-fast),
        border-color var(--transition-fast),
        background-color var(--transition-fast),
        color var(--transition-fast);
}

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

.button_primary {
    border-color: var(--color-primary);
    background: var(--color-primary);
    color: #9e82b3;
}

.button_primary:hover {
    background: #ffffff;
    border-color: #ffffff;
}

.button_secondary {
    background: transparent;
    border-color: var(--color-text);
}

.button_secondary:hover {
    background-color: #9e82b3;
    
    border-color: #9e82b3;
}


/* ========================================
   WHAT I CREATE
======================================== */

.about_create_grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-lg);
}

.about_create_card {
    min-height: 300px;
    padding: clamp(24px, 3vw, 36px);

    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);

    background: var(--color-surface);
    text-align: center;

    transition:
        transform var(--transition-fast),
        border-color var(--transition-fast),
        box-shadow var(--transition-fast);
}

.about_create_card:hover {
    transform: translateY(-5px);
    border-color: var(--color-primary);
    box-shadow: 0 18px 45px rgba(0, 0, 0, 0.2);
}

.about_create_icon {
    display: grid;
    width: 50px;
    height: 50px;
    margin-inline: auto;
    place-items: center;

    border-radius: 50%;
    background: rgba(172, 135, 201, 0.14);

    color: var(--color-primary);
    font-size: 1.2rem;
}

.about_create_card h3 {
    margin: 1.4em 0 0.7em;
    font-size: 1.35rem;
}

.about_create_card p {
    margin: 0;
    color: var(--color-text-muted);
    line-height: 1.85;
}


/* ========================================
   PHILOSOPHY
======================================== */

.about_philosophy {
    padding-block: clamp(80px, 10vw, 150px);

    border-block: 1px solid var(--color-border);

    background:
        radial-gradient(
            circle at 20% 30%,
            rgba(172, 135, 201, 0.1),
            transparent 35%
        ),
        var(--color-surface);
}

.about_philosophy_inner {
    display: grid;
    grid-template-columns:
        minmax(320px, 1.05fr)
        minmax(280px, 0.95fr);
    align-items: center;
    gap: clamp(40px, 8vw, 110px);
}

.about_philosophy_content {
    text-align: center;
}

.about_philosophy_content blockquote {
    margin: 0.45em auto;
    max-width: 760px;

    font-size: clamp(2rem, 4.5vw, 4.4rem);
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: -0.04em;
}

.about_philosophy_content > p:last-child {
    max-width: 650px;
    margin: 2rem auto 0;

    color: var(--color-text-muted);
    line-height: 1.95;
}

.about_philosophy_image {
    overflow: hidden;
    aspect-ratio: 4 / 6;

    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.about_philosophy_image img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    object-position: center bottom;
}


/* ========================================
   TIMELINE
======================================== */

.about_timeline .section_heading {
    text-align: center;
}

.timeline {
    position: relative;
    display: grid;
    gap: 70px;

    width: min(1000px, 100%);
    margin-inline: auto;
    padding-block: 20px;
}

/* 中央垂直線 */
.timeline::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;

    width: 1px;
    background: var(--color-border);

    transform: translateX(-50%);
}

/* 每個時間點 */
.timeline_item {
    position: relative;
    width: calc(50% - 48px);
    padding: 26px 30px;

    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);

    background: var(--color-surface);
}

/* 奇數項放左邊 */
.timeline_item:nth-child(odd) {
    justify-self: start;
    text-align: right;
}

/* 偶數項放右邊 */
.timeline_item:nth-child(even) {
    justify-self: end;
    text-align: left;
}

/* 圓點 */
.timeline_marker {
    position: absolute;
    top: 32px;

    width: 15px;
    height: 15px;

    border: 3px solid var(--color-background);
    border-radius: 50%;

    background: var(--color-primary);
    box-shadow: 0 0 0 1px var(--color-primary);
}

/* 左側項目的圓點 */
.timeline_item:nth-child(odd) .timeline_marker {
    right: -56px;
}

/* 右側項目的圓點 */
.timeline_item:nth-child(even) .timeline_marker {
    left: -56px;
}

.timeline_year {
    margin: 0 0 0.4em;

    color: var(--color-primary);
    font-family: monospace;
    font-size: 0.9rem;
    letter-spacing: 0.08em;
}

.timeline_item h3 {
    margin: 0;
    font-size: 1.35rem;
}

.timeline_item > p:last-child {
    margin: 0.7em 0 0;
    color: var(--color-text-muted);
    line-height: 1.8;
}


/* ========================================
   NUMBERS
======================================== */

.about_numbers {
    padding-block: clamp(70px, 9vw, 120px);

    border-block: 1px solid var(--color-border);
    background: var(--color-surface);
}

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

.about_number_item {
    display: flex;
    min-height: 200px;
    padding: 30px;

    align-items: center;
    justify-content: center;
    flex-direction: column;

    text-align: center;
}

.about_number_item + .about_number_item {
    border-left: 1px solid var(--color-border);
}

.about_number {
    display: block;

    font-size: clamp(3.5rem, 8vw, 7rem);
    line-height: 1;
    letter-spacing: -0.06em;
}

.about_number_item span {
    margin-top: 14px;
    color: var(--color-text-muted);
}

.about_number_symbol {
    color: var(--color-secondary, #8fd694);
}


/* ========================================
   GALLERY
======================================== */


.about_gallery_grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-auto-rows: 240px;
    gap: 16px;
}

.about_gallery_item {
    overflow: hidden;
    margin: 0;

    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);

    background: var(--color-surface);
}

.about_gallery_item_large {
    grid-row: span 2;
}

.about_gallery_item_wide {
    grid-column: span 2;
}

.about_gallery_item img {
    width: 100%;
    height: 100%;
    display: block;

    object-fit: cover;

    transition:
        transform 0.5s ease;
}

.about_gallery_item:hover img {
    transform: scale(1.04);
}


/* ========================================
   CTA
======================================== */

.about_cta {
    padding-block: clamp(90px, 12vw, 170px);
}

.about_cta_inner {
    padding: clamp(38px, 7vw, 90px);

    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);

    background:
        radial-gradient(
            circle at 85% 20%,
            rgba(115, 182, 143, 0.14),
            transparent 35%
        ),
        radial-gradient(
            circle at 10% 90%,
            rgba(172, 135, 201, 0.16),
            transparent 38%
        ),
        var(--color-surface);

    text-align: center;
}

.about_cta_inner h2 {
    margin: 0.3em 0;

    font-size: clamp(2.2rem, 5vw, 4.8rem);
    letter-spacing: -0.045em;
}

.about_cta_inner > p:not(.section_label) {
    max-width: 620px;
    margin-inline: auto;

    color: var(--color-text-muted);
    line-height: 1.8;
}

.about_cta_actions {
    justify-content: center;
}


/* ========================================
   REVEAL
======================================== */

.reveal {
    opacity: 0;
    transform: translateY(26px);

    transition:
        opacity 0.75s ease,
        transform 0.75s ease;
}

.reveal.is_visible {
    opacity: 1;
    transform: translateY(0);
}


/* ========================================
   REDUCED MOTION
======================================== */

@media (prefers-reduced-motion: reduce) {
    .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }

    .about_gallery_item img,
    .button,
    .about_create_card {
        transition: none;
    }
}


/* ========================================
   TABLET
======================================== */

@media (max-width: 960px) {
    .about_hero_inner,
    .about_philosophy_inner {
        grid-template-columns: 1fr;
    }

    .about_hero_image {
        min-height: auto;
        aspect-ratio: 1 / 1;
    }

    .about_hero_content {
        max-width: 720px;
        margin-inline: auto;
        text-align: center;
    }

    .about_hero_text {
        margin-inline: auto;
    }

    .about_hero_actions {
        justify-content: center;
    }

    .about_create_grid {
        grid-template-columns: 1fr;
    }

    .about_create_card {
        min-height: auto;
    }

    .about_philosophy_image {
        width: min(620px, 100%);
        margin-inline: auto;
    }

    .about_gallery_grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .about_gallery_item_wide {
        grid-column: span 2;
    }
}


/* ========================================
   MOBILE
======================================== */

@media (max-width: 680px) {

    .about_hero_content h1 {
        font-size: clamp(3rem, 16vw, 4.6rem);
    }

    .about_hero_actions,
    .about_cta_actions {
        align-items: stretch;
        flex-direction: column;
    }

    .button {
        width: 100%;
    }

    /* 手機版時間軸改成左側單線 */
    .timeline {
        gap: 28px;
        padding-left: 28px;
    }

    .timeline::before {
        left: 7px;
        transform: none;
    }

    .timeline_item,
    .timeline_item:nth-child(odd),
    .timeline_item:nth-child(even) {
        width: 100%;
        justify-self: stretch;
        padding: 22px 24px;
        text-align: left;
    }

    .timeline_item:nth-child(odd) .timeline_marker,
    .timeline_item:nth-child(even) .timeline_marker {
        top: 28px;
        left: -28px;
        right: auto;
    }

    .about_numbers_grid {
        grid-template-columns: 1fr;
    }

    .about_number_item + .about_number_item {
        border-top: 1px solid var(--color-border);
        border-left: 0;
    }

    .about_gallery_grid {
        grid-template-columns: 1fr;
        grid-auto-rows: 260px;
    }

    .about_gallery_item_large,
    .about_gallery_item_wide {
        grid-row: auto;
        grid-column: auto;
    }

    .about_cta_inner {
        text-align: center;
    }

    .about_cta_actions {
        justify-content: center;
    }
}