/* YoonCare Web — Editorial Design System */

:root {
    /* Brand CI Variables (PRD §13) */
    --color-primary:      #1C2E50;    /* navy — CTA·링크 (흰 텍스트 대비 13.5:1 ✓) */
    --color-primary-dark: #2D4270;    /* navy-lt hover */
    --color-navy:         #1C2E50;    /* brand header/footer */
    --color-navy-lt:      #2D4270;    /* navy hover */
    --color-accent:       #4A8CC7;    /* blue — 아이콘·데코 전용 (비텍스트) */
    --color-bg-cloud:     #F5F8FC;    /* 전체 배경 */
    --color-bg-white:     #FFFFFF;
    --color-text-main:    #1A2744;    /* 주요 텍스트 */
    --color-text-muted:   #5A6B8A;    /* 보조 텍스트 */
    --color-border:       #DDE3EE;    /* 구분선 */
    --border-width: 2px;

    /* Typography Stack */
    --font-serif: 'Cormorant Garamond', 'Noto Serif KR', serif;
    --font-sans:  'DM Sans', 'Noto Sans KR', sans-serif;

    /* Typographic Scale */
    --fs-h1: 3.5rem;
    --fs-h2: 2.25rem;
    --fs-h3: 1.5rem;
    --fs-body: 1rem;
    --fs-caption: 0.875rem;

    --lh-h1: 1.2;
    --lh-h2: 1.3;
    --lh-h3: 1.4;
    --lh-body: 1.6;
    --lh-caption: 1.5;

    /* UI Token Mapping (base.css compatibility) */
    --cloud:    #F5F8FC;
    --ink:      #1A2744;
    --blue:     #4A8CC7;
    --blue-dk:  #3A7AC0;
    --navy:     #1C2E50;
    --navy-lt:  #2D4270;
    --type-body:  1rem;
    --lh-body:    1.6;
    --touch-min:  48px;
    --t-fast:     0.2s;
    --ease:       cubic-bezier(.2,.8,.2,1);
}

/* Base Reset & Foundation */
body {
    margin: 0;
    font-family: var(--font-sans);
    font-size: var(--fs-body);
    line-height: var(--lh-body);
    color: var(--color-text-main);
    background-color: var(--color-bg-cloud);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

/* Layout Components */
.yc-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.yc-section {
    padding: 96px 0;
}

.yc-section--light {
    background-color: var(--color-bg-white);
}

.yc-section--cloud,
.yc-section--sand {
    background-color: var(--color-bg-cloud);
}

/* Typography Helpers */
.serif { font-family: var(--font-serif); }
.sans { font-family: var(--font-sans); }

.yc-headline {
    font-family: var(--font-serif);
    font-size: var(--fs-h1);
    line-height: var(--lh-h1);
    font-weight: 700;
    color: var(--color-text-main);
    margin: 0 0 32px 0;
    letter-spacing: -0.02em;
}

.yc-headline--md {
    font-size: var(--fs-h2);
    line-height: var(--lh-h2);
    letter-spacing: -0.01em;
}

.yc-subhead {
    font-family: var(--font-serif);
    font-size: var(--fs-h3);
    line-height: var(--lh-h3);
    font-weight: 600;
    color: var(--color-text-main);
    margin: 0 0 16px 0;
}

.yc-body {
    font-size: var(--fs-body);
    line-height: var(--lh-body);
    color: var(--color-text-main);
    margin: 0 0 1rem 0;
}

.yc-body--muted {
    color: var(--color-text-muted);
}

.yc-caption {
    font-size: var(--fs-caption);
    line-height: var(--lh-caption);
    color: var(--color-text-muted);
    letter-spacing: 0.01em;
}

/* Buttons & Interactive */
/* a.yc-btn 으로 specificity (0,2,1) 확보 → a:hover (0,1,1) 완전 우선 */
a.yc-btn,
button.yc-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    box-sizing: border-box;
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-bg-white);
    background-color: var(--color-primary);
    border: var(--border-width) solid var(--color-primary);
    border-radius: 2px;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s cubic-bezier(.2,.8,.2,1);
    min-width: 140px;
    min-height: 48px;
}

a.yc-btn:hover,
button.yc-btn:hover {
    background-color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    color: var(--color-bg-white);
    text-decoration: none;
}

a.yc-btn.yc-btn--outline,
button.yc-btn.yc-btn--outline {
    background-color: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

a.yc-btn.yc-btn--outline:hover,
button.yc-btn.yc-btn--outline:hover {
    background-color: var(--color-primary);
    color: var(--color-bg-white);
    text-decoration: none;
}

.yc-btn--large {
    padding: 16px 32px;
    font-size: 1.25rem;
}

/* Components */
.yc-card {
    background-color: var(--color-bg-white);
    border: var(--border-width) solid var(--color-border);
    border-radius: 2px;
    padding: 32px;
    transition: border-color 0.2s ease;
}

.yc-card:hover {
    border-color: var(--color-primary);
}

.yc-divider {
    border: 0;
    border-top: var(--border-width) solid var(--color-text-main);
    margin: 48px 0;
}

/* Forms */
.yc-form-group {
    margin-bottom: 24px;
}

.yc-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: var(--fs-caption);
    color: var(--color-text-main);
}

.yc-input {
    width: 100%;
    box-sizing: border-box;
    padding: 12px;
    font-family: var(--font-sans);
    font-size: 1rem;
    color: var(--color-text-main);
    background-color: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: 2px;
    transition: border-color 0.2s ease;
}

.yc-input:focus {
    outline: none;
    border-color: var(--color-primary);
}

/* Loading */
.yc-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

.yc-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--color-border);
    border-top: 3px solid var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 16px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsive */
@media (max-width: 768px) {
    :root {
        --fs-h1: 2.5rem;
        --fs-h2: 1.75rem;
        --fs-h3: 1.25rem;
    }
    .yc-container {
        padding: 0 1rem;
    }
    .yc-section {
        padding: 64px 0;
    }
}