:root {
    --ui-font-family: 'Inter', 'Malgun Gothic', sans-serif;
    --ui-radius-sm: 10px;
    --ui-radius-md: 16px;
    --ui-radius-lg: 24px;
    --ui-space-1: 8px;
    --ui-space-2: 12px;
    --ui-space-3: 16px;
    --ui-space-4: 20px;
    --ui-space-5: 28px;
    --ui-space-6: 40px;
    --ui-shadow-soft: 0 20px 60px rgba(15, 17, 21, 0.08);
    --ui-shadow-strong: 0 24px 80px rgba(15, 17, 21, 0.18);
    --ui-transition-base: 180ms ease;
}

[data-theme="dark"] {
    --ui-color-primary: #3DE259;
    --ui-color-primary-hover: #30c94a;
    --ui-color-background: #0f1115;
    --ui-color-background-elevated: #141821;
    --ui-color-surface: #171b24;
    --ui-color-surface-strong: #1e2430;
    --ui-color-surface-soft: #242c39;
    --ui-color-border: rgba(139, 157, 182, 0.2);
    --ui-color-border-strong: rgba(139, 157, 182, 0.36);
    --ui-color-text: #f5f7fb;
    --ui-color-text-muted: #9ca8bb;
    --ui-color-text-soft: #c7d0dd;
    --ui-color-success: #43d48d;
    --ui-color-warning: #ffc766;
    --ui-color-danger: #ff6b7d;
    --ui-color-overlay: rgba(8, 11, 16, 0.72);
}

[data-theme="light"] {
    --ui-color-primary: #3DE259;
    --ui-color-primary-hover: #30c94a;
    --ui-color-background: #f4f7fb;
    --ui-color-background-elevated: #ffffff;
    --ui-color-surface: #ffffff;
    --ui-color-surface-strong: #eef3f8;
    --ui-color-surface-soft: #f7f9fc;
    --ui-color-border: rgba(45, 62, 83, 0.12);
    --ui-color-border-strong: rgba(45, 62, 83, 0.24);
    --ui-color-text: #111827;
    --ui-color-text-muted: #65748b;
    --ui-color-text-soft: #334155;
    --ui-color-success: #1f9d63;
    --ui-color-warning: #d98b07;
    --ui-color-danger: #dc4564;
    --ui-color-overlay: rgba(15, 23, 42, 0.12);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--ui-font-family);
    background: var(--ui-color-background);
    color: var(--ui-color-text);
}

a {
    color: inherit;
    text-decoration: none;
}

button,
input,
select,
textarea {
    font: inherit;
}

button {
    border: 0;
    background: none;
}

img {
    display: block;
    max-width: 100%;
}

.ui-display {
    font-size: clamp(2.25rem, 5vw, 4rem);
    line-height: 1.05;
    font-weight: 800;
    letter-spacing: -0.04em;
}

.ui-title-1 {
    font-size: clamp(1.85rem, 4vw, 2.8rem);
    line-height: 1.1;
    font-weight: 800;
    letter-spacing: -0.03em;
}

.ui-title-2 {
    font-size: clamp(1.4rem, 2.5vw, 2rem);
    line-height: 1.2;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.ui-text-body {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--ui-color-text-soft);
}

.ui-text-muted {
    font-size: 0.95rem;
    line-height: 1.65;
    color: var(--ui-color-text-muted);
}

.ui-card {
    background: var(--ui-color-surface);
    border: 1px solid var(--ui-color-border);
    border-radius: var(--ui-radius-md);
    box-shadow: var(--ui-shadow-soft);
    padding: var(--ui-space-5);
    transition: transform var(--ui-transition-base), border-color var(--ui-transition-base), box-shadow var(--ui-transition-base), background var(--ui-transition-base);
}

.ui-card--interactive:hover {
    transform: translateY(-2px);
    border-color: var(--ui-color-border-strong);
    box-shadow: var(--ui-shadow-strong);
}

.ui-card--strong {
    background: linear-gradient(135deg, var(--ui-color-surface) 0%, var(--ui-color-surface-strong) 100%);
}

.ui-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-height: 46px;
    padding: 0 18px;
    border-radius: 999px;
    cursor: pointer;
    transition: transform var(--ui-transition-base), background var(--ui-transition-base), color var(--ui-transition-base), border-color var(--ui-transition-base), box-shadow var(--ui-transition-base);
    font-weight: 600;
}

.ui-button:hover {
    transform: translateY(-1px);
}

.ui-button--primary {
    background: var(--ui-color-primary);
    color: #09210f;
    box-shadow: 0 10px 30px rgba(61, 226, 89, 0.24);
}

.ui-button--primary:hover {
    background: var(--ui-color-primary-hover);
}

.ui-button--secondary {
    background: var(--ui-color-surface-strong);
    color: var(--ui-color-text);
    border: 1px solid var(--ui-color-border-strong);
}

.ui-button--ghost {
    color: var(--ui-color-text-soft);
    border: 1px solid var(--ui-color-border);
    background: transparent;
}

.ui-button--ghost:hover {
    background: var(--ui-color-surface-soft);
}

.ui-button--icon {
    width: 46px;
    padding: 0;
    border-radius: 50%;
    background: var(--ui-color-surface-strong);
    color: var(--ui-color-text);
    border: 1px solid var(--ui-color-border);
}

.ui-button--icon svg {
    width: 20px;
    height: 20px;
}

.ui-button-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.ui-label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.95rem;
    font-weight: 600;
}

.ui-input,
.ui-select,
.ui-textarea {
    width: 100%;
    border: 1px solid var(--ui-color-border);
    background: var(--ui-color-background-elevated);
    color: var(--ui-color-text);
    border-radius: 14px;
    padding: 14px 16px;
    transition: border-color var(--ui-transition-base), box-shadow var(--ui-transition-base), background var(--ui-transition-base);
}

.ui-input::placeholder,
.ui-textarea::placeholder {
    color: var(--ui-color-text-muted);
}

.ui-input:focus,
.ui-select:focus,
.ui-textarea:focus {
    outline: none;
    border-color: var(--ui-color-primary);
    box-shadow: 0 0 0 4px rgba(61, 226, 89, 0.14);
}

.ui-input-wrap {
    position: relative;
}

.ui-input-wrap__icon {
    position: absolute;
    left: 14px;
    top: 50%;
    width: 18px;
    height: 18px;
    color: var(--ui-color-text-muted);
    transform: translateY(-50%);
}

.ui-input-wrap__icon svg {
    width: 18px;
    height: 18px;
}

.ui-input--with-icon {
    padding-left: 42px;
}

.ui-chip-row,
.ui-choice-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 18px;
}

.ui-chip {
    display: inline-flex;
    align-items: center;
    min-height: 34px;
    padding: 0 14px;
    border-radius: 999px;
    font-size: 0.88rem;
    font-weight: 600;
}

.ui-chip--accent {
    background: rgba(61, 226, 89, 0.16);
    color: var(--ui-color-primary);
    border: 1px solid rgba(61, 226, 89, 0.24);
}

.ui-chip--neutral {
    background: var(--ui-color-surface-strong);
    color: var(--ui-color-text-soft);
    border: 1px solid var(--ui-color-border);
}

.ui-check {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--ui-color-text-soft);
}

.ui-check input {
    accent-color: var(--ui-color-primary);
    width: 18px;
    height: 18px;
}

.ui-tabs {
    display: inline-flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 20px;
}

.ui-tabs__tab {
    min-height: 40px;
    padding: 0 16px;
    border-radius: 999px;
    background: var(--ui-color-surface-strong);
    color: var(--ui-color-text-muted);
    border: 1px solid var(--ui-color-border);
    cursor: pointer;
}

.ui-tabs__tab.is-active {
    background: rgba(61, 226, 89, 0.16);
    color: var(--ui-color-primary);
    border-color: rgba(61, 226, 89, 0.26);
}

.ui-breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    color: var(--ui-color-text-muted);
}

.ui-pagination {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 22px;
}

.ui-pagination__button {
    min-width: 42px;
    height: 42px;
    padding: 0 14px;
    border-radius: 12px;
    border: 1px solid var(--ui-color-border);
    background: var(--ui-color-background-elevated);
    color: var(--ui-color-text-soft);
    cursor: pointer;
}

.ui-pagination__button.is-active {
    border-color: rgba(61, 226, 89, 0.24);
    background: rgba(61, 226, 89, 0.16);
    color: var(--ui-color-primary);
}

.ui-toast {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 20px;
    border-radius: var(--ui-radius-md);
    background: var(--ui-color-surface-strong);
    border: 1px solid var(--ui-color-border);
}

.ui-top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding: 14px 18px;
    border-radius: var(--ui-radius-md);
    background: var(--ui-color-background-elevated);
    border: 1px solid var(--ui-color-border);
}

.ui-top-bar__left,
.ui-top-bar__actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.ui-top-bar__kakao {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 40px;
    padding: 0 14px;
    border-radius: 999px;
    background: #fee500;
    color: #202020;
    font-weight: 700;
}

.ui-status-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 40px;
    padding: 0 12px;
    border-radius: 999px;
    background: color-mix(in srgb, var(--ui-color-primary) 12%, var(--ui-color-background-elevated));
    border: 1px solid color-mix(in srgb, var(--ui-color-primary) 18%, var(--ui-color-border));
}

.ui-status-badge__label {
    padding: 4px 8px;
    border-radius: 999px;
    background: var(--ui-color-primary);
    color: #09210f;
    font-size: 0.72rem;
    font-weight: 800;
}

.ui-status-badge__text {
    color: var(--ui-color-text-soft);
    font-weight: 600;
}

.ui-status-badge__count {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--ui-color-danger);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.76rem;
    font-weight: 700;
}

.ui-user-menu {
    position: relative;
}

.ui-user-menu__trigger {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    min-height: 40px;
    padding: 0 14px;
    border-radius: 999px;
    background: transparent;
    color: var(--ui-color-text-soft);
    border: 1px solid var(--ui-color-border);
    cursor: pointer;
}

.ui-user-menu__icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--ui-color-surface-strong);
}

.ui-user-menu__icon svg {
    width: 16px;
    height: 16px;
}

.ui-user-menu__arrow {
    width: 8px;
    height: 8px;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: rotate(45deg) translateY(-1px);
}

.ui-user-menu__dropdown {
    margin-top: 10px;
    padding: 8px 0;
    min-width: 180px;
    border-radius: 16px;
    background: var(--ui-color-surface);
    border: 1px solid var(--ui-color-border);
    box-shadow: var(--ui-shadow-soft);
}

.ui-user-menu__dropdown a {
    display: block;
    padding: 10px 14px;
    color: var(--ui-color-text-soft);
}

.ui-user-menu__dropdown a:hover {
    background: var(--ui-color-surface-strong);
    color: var(--ui-color-text);
}

.ui-side-nav__toggle {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: var(--ui-color-surface-strong);
    color: var(--ui-color-text);
    border: 1px solid var(--ui-color-border);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.ui-side-nav__toggle svg {
    width: 20px;
    height: 20px;
}

.ui-side-nav {
    border-radius: var(--ui-radius-md);
    background: var(--ui-color-background-elevated);
    border: 1px solid var(--ui-color-border);
    padding: 18px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.ui-side-nav__brand img {
    width: 112px;
}

.ui-side-nav__group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.ui-side-nav__item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    min-height: 40px;
    padding: 0 12px;
    border-radius: 12px;
    color: var(--ui-color-text-soft);
    background: transparent;
    border: 1px solid transparent;
}

.ui-side-nav__item.is-title {
    appearance: none;
    color: var(--ui-color-text);
    background: var(--ui-color-surface-soft);
    border-color: var(--ui-color-border);
    font: inherit;
    font-weight: 700;
    width: 100%;
    cursor: pointer;
    text-align: left;
    transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.ui-side-nav__item.is-active {
    background: color-mix(in srgb, var(--ui-color-primary) 16%, transparent);
    color: var(--ui-color-primary);
    border-color: color-mix(in srgb, var(--ui-color-primary) 20%, var(--ui-color-border));
}

.ui-side-nav__submenu {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding-left: 10px;
}

.ui-side-nav__group.is-collapsed .ui-side-nav__submenu {
    display: none;
}

.ui-side-nav__arrow {
    width: 8px;
    height: 8px;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: rotate(45deg);
    transition: transform 0.2s ease;
}

.ui-side-nav__group.is-collapsed .ui-side-nav__arrow {
    transform: rotate(-45deg);
}

.ui-footer-shell {
    padding: 6px 0 0;
}

.ui-footer-shell__grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr 1fr;
    gap: 20px;
}

.ui-footer-shell__brand {
    display: flex;
    align-items: center;
    gap: 16px;
}

.ui-footer-shell__brand img {
    width: 52px;
    height: 52px;
}

.ui-progress {
    width: 100%;
    height: 8px;
    border-radius: 999px;
    overflow: hidden;
    background: var(--ui-color-surface-strong);
    border: 1px solid var(--ui-color-border);
}

.ui-progress__bar {
    height: 100%;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--ui-color-primary), color-mix(in srgb, var(--ui-color-primary) 65%, #4b83ff));
}

.ui-sync-scroll {
    width: 100%;
    overflow-x: auto;
    overflow-y: hidden;
    border-radius: 999px;
    background: transparent;
    scrollbar-width: thin;
    scrollbar-color: color-mix(in srgb, var(--ui-color-text-muted) 46%, transparent) transparent;
}

.ui-sync-scroll::-webkit-scrollbar {
    height: 14px;
}

.ui-sync-scroll::-webkit-scrollbar-track {
    background: transparent;
    border-radius: 999px;
    border: 0;
}

.ui-sync-scroll::-webkit-scrollbar-thumb {
    background: color-mix(in srgb, var(--ui-color-text-muted) 46%, transparent);
    border-radius: 999px;
    border: 2px solid var(--ui-color-surface-soft);
}

.ui-sync-scroll::-webkit-scrollbar-thumb:hover {
    background: color-mix(in srgb, var(--ui-color-primary) 34%, var(--ui-color-text-muted));
}

.ui-sync-scroll__viewport {
    min-width: 100%;
    height: 1px;
}

.ui-sync-scroll__content {
    width: 620px;
    height: 1px;
}

.ui-table-scroll-group {
    width: 100%;
    min-width: 0;
}

.ui-data-table-wrap {
    width: 100%;
    overflow-x: auto;
    border-radius: 16px;
    border: 1px solid var(--ui-color-border);
    scrollbar-width: thin;
    scrollbar-color: color-mix(in srgb, var(--ui-color-text-muted) 46%, transparent) transparent;
}

.ui-data-table-wrap[data-ui-drag-scroll] {
    cursor: grab;
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}

.ui-data-table-wrap.is-dragging {
    cursor: grabbing;
}

.ui-data-table-wrap::-webkit-scrollbar {
    height: 14px;
}

.ui-data-table-wrap::-webkit-scrollbar-track {
    background: transparent;
    border-radius: 999px;
    margin: 0 8px 4px;
}

.ui-data-table-wrap::-webkit-scrollbar-thumb {
    background: color-mix(in srgb, var(--ui-color-text-muted) 46%, transparent);
    border-radius: 999px;
    border: 2px solid var(--ui-color-surface-soft);
}

.ui-data-table-wrap::-webkit-scrollbar-thumb:hover {
    background: color-mix(in srgb, var(--ui-color-primary) 34%, var(--ui-color-text-muted));
}

.ui-data-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 620px;
    background: var(--ui-color-background-elevated);
}

.ui-data-table th,
.ui-data-table td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--ui-color-border);
    text-align: center;
    color: var(--ui-color-text-soft);
    white-space: nowrap;
}

.ui-data-table thead th {
    background: var(--ui-color-surface-soft);
    color: var(--ui-color-text);
    font-weight: 700;
}

.ui-data-table tbody tr:nth-child(odd) {
    background: color-mix(in srgb, var(--ui-color-surface-soft) 45%, transparent);
}

.ui-feature-pill-group {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.ui-feature-pill {
    display: inline-flex;
    align-items: center;
    min-height: 38px;
    padding: 0 14px;
    border-radius: 999px;
    background: var(--ui-color-surface-soft);
    border: 1px solid var(--ui-color-border);
    color: var(--ui-color-text-soft);
    font-weight: 600;
}

.ui-feature-pill.is-selected {
    background: color-mix(in srgb, var(--ui-color-primary) 16%, transparent);
    border-color: color-mix(in srgb, var(--ui-color-primary) 26%, var(--ui-color-border));
    color: var(--ui-color-primary);
}

.ui-reference-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.ui-reference-card {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 14px;
    border-radius: 18px;
    background: var(--ui-color-background-elevated);
    border: 1px solid var(--ui-color-border);
}

.ui-reference-card__image {
    min-height: 150px;
    border-radius: 14px;
}

.ui-reference-card__image--gradient {
    background: linear-gradient(135deg, rgba(61, 226, 89, 0.28), rgba(61, 226, 89, 0.02)), linear-gradient(135deg, #0d1522, #243147);
}

.ui-reference-card__image--gradient-alt {
    background: linear-gradient(135deg, rgba(91, 159, 255, 0.28), rgba(91, 159, 255, 0.02)), linear-gradient(135deg, #1a1d24, #2a3647);
}

.ui-guide-hero {
    padding: 28px;
    border-radius: 20px;
    background: linear-gradient(135deg, color-mix(in srgb, var(--ui-color-primary) 18%, transparent), transparent 58%), var(--ui-color-surface-strong);
    border: 1px solid var(--ui-color-border);
}

.ui-guide-hero h3,
.ui-guide-hero p {
    margin: 0;
}

.ui-guide-hero h3 {
    margin-bottom: 12px;
}

.ui-guide-steps {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
    margin-top: 18px;
}

.ui-guide-step {
    padding: 20px;
    border-radius: 18px;
    background: var(--ui-color-background-elevated);
    border: 1px solid var(--ui-color-border);
    box-shadow: var(--ui-shadow-soft);
}

.ui-guide-step__number {
    width: 40px;
    height: 40px;
    margin-bottom: 14px;
    border-radius: 50%;
    background: var(--ui-color-primary);
    color: #09210f;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
}

.ui-notice-box {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 18px;
    border-radius: 16px;
    background: color-mix(in srgb, var(--ui-color-warning) 10%, var(--ui-color-background-elevated));
    border: 1px solid color-mix(in srgb, var(--ui-color-warning) 22%, var(--ui-color-border));
}

.ui-notice-box p {
    margin: 0;
    color: var(--ui-color-text-soft);
    line-height: 1.7;
}

.ui-loader {
    display: flex;
    align-items: center;
    gap: 14px;
}

.ui-loader__spinner {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    border: 2px solid color-mix(in srgb, var(--ui-color-primary) 14%, var(--ui-color-surface-strong));
    border-top-color: var(--ui-color-primary);
    animation: uiSpin 1s linear infinite;
}

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

@media (max-width: 900px) {
    .ui-card {
        padding: 20px;
    }

    .ui-footer-shell__grid,
    .ui-guide-steps,
    .ui-reference-grid {
        grid-template-columns: 1fr;
    }
}