/**
 * Principles Section Styles
 * 숨카(SUMCAR) 프로젝트 - 프리미엄 서비스 원칙 섹션
 */

/* ========================================
   Principles Section
   ======================================== */
.principles {
    position: relative;
    width: 100%;
    background: #0D0D0D;
    padding: 120px 24px;
    padding: var(--space-120, 120px) var(--space-24, 24px);
}

.principles__container {
    position: relative;
    max-width: 1200px;
    max-width: var(--container-max-width, 1200px);
    width: 100%;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 30% 70%;
    gap: 80px;
    gap: var(--space-80, 80px);
    align-items: start;
}

/* ========================================
   Header (Left Sticky)
   ======================================== */
.principles__header {
    position: sticky;
    top: 120px;
    text-align: left;
    align-self: start;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.principles__title {
    font-size: 24px;
    font-weight: 500;
    color: #FFFFFF;
    margin-bottom: 16px;
    margin-bottom: var(--space-16, 16px);
    white-space: nowrap;
    align-self: center;
}

.principles__subtitle {
    font-size: 52px;
    color: #0DC6E3;
    margin: 0;
    font-weight: 700;
    line-height: 1.2;
    word-break: keep-all;
    white-space: nowrap;
}

/* ========================================
   Items (Right Scrollable)
   ======================================== */
.principles__items {
    display: flex;
    flex-direction: column;
    gap: 120px;
    gap: var(--space-120, 120px);
}

.principles__item {
    display: flex;
    flex-direction: column;
    gap: 24px;
    gap: var(--space-24, 24px);
}

/* ========================================
   Content
   ======================================== */
.principles__content {
    display: flex;
    flex-direction: column;
    gap: 16px;
    gap: var(--space-16, 16px);
}

.principles__content-header {
    display: flex;
    align-items: baseline;
    gap: 12px;
}

.principles__number {
    font-size: 38px;
    font-weight: 700;
    font-weight: var(--fw-bold, 700);
    color: #00B8C6;
    color: var(--c-primary, #00B8C6);
    line-height: 1;
}

.principles__item-title {
    font-size: 38px;
    font-size: var(--fs-h2, 38px);
    font-weight: 700;
    font-weight: var(--fw-bold, 700);
    color: #FFFFFF;
    line-height: 1.3;
    margin: 0;
}

.principles__description {
    font-size: 18px;
    font-size: var(--fs-large, 18px);
    color: #FFFFFF;
    line-height: 1;
    margin: 10px;
    white-space: pre-line;
}

/* ========================================
   Image
   ======================================== */
.principles__image {
    position: relative;
    width: 100%;
    height: 500px;
    overflow: hidden;
    border-radius: 20px;
    border-radius: var(--radius-xl, 20px);
    cursor: pointer;
}

.principles__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: transform 0.6s ease, filter 0.6s ease;
}

.principles__image:hover img {
    transform: scale(1.1);
    filter: brightness(1.15);
}

/* ========================================
   Tablet Responsive
   ======================================== */
@media (max-width: 991px) {
    .principles {
        padding: 80px 32px;
        padding: var(--space-80, 80px) var(--space-32, 32px);
    }

    .principles__container {
        grid-template-columns: 1fr;
        gap: 60px;
        gap: var(--space-60, 60px);
    }

    .principles__header {
        position: static;
        margin-bottom: 0;
    }

    .principles__title {
        font-size: 20px;
    }

    .principles__subtitle {
        font-size: 40px;
    }

    .principles__items {
        gap: 80px;
        gap: var(--space-80, 80px);
    }

    .principles__item {
        gap: 32px;
        gap: var(--space-32, 32px);
    }

    .principles__number {
        font-size: 28px;
    }

    .principles__item-title {
        font-size: 28px;
    }

    .principles__description {
        font-size: 16px;
        font-size: var(--fs-h6, 16px);
    }

    .principles__image {
        height: 400px;
    }
}

/* ========================================
   Mobile Responsive
   ======================================== */
@media (max-width: 767px) {
    .principles {
        padding: 60px 16px;
        padding: var(--space-60, 60px) var(--space-16, 16px);
    }

    .principles__container {
        grid-template-columns: 1fr;
        gap: 48px;
        gap: var(--space-48, 48px);
    }

    .principles__header {
        position: static;
        margin-bottom: 0;
        align-items: center;
        text-align: center;
    }

    .principles__title {
        font-size: 16px;
        align-self: center;
    }

    .principles__subtitle {
        font-size: 28px;
        white-space: normal;
    }

    .principles__items {
        gap: 60px;
        gap: var(--space-60, 60px);
    }

    .principles__item {
        gap: 24px;
        gap: var(--space-24, 24px);
    }

    .principles__number {
        font-size: 24px;
    }

    .principles__item-title {
        font-size: 24px;
        font-size: var(--fs-h3, 24px);
    }

    .principles__description {
        font-size: 15px;
        font-size: var(--fs-base, 15px);
    }

    .principles__image {
        height: 300px;
    }
}

/* ========================================
   Animations
   ======================================== */
@keyframes principlesFadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.principles__item {
    animation: principlesFadeInUp 800ms ease-out;
    animation-fill-mode: both;
}

.principles__item:nth-child(1) {
    animation-delay: 100ms;
}

.principles__item:nth-child(2) {
    animation-delay: 200ms;
}

.principles__item:nth-child(3) {
    animation-delay: 300ms;
}

.principles__item:nth-child(4) {
    animation-delay: 400ms;
}

.principles__item:nth-child(5) {
    animation-delay: 500ms;
}

/* ========================================
   Accessibility
   ======================================== */
@media (prefers-reduced-motion: reduce) {
    .principles__item {
        animation: none;
    }
}