/* ==========================================================================
   ELIMS 로그인 화면 — 좌우 2분할 (브랜드 패널 + 폼 패널)
   ==========================================================================
   - 좌측: Primary 그라디언트 브랜드 패널(로고 + 히어로 카피 + 콘센트릭 데코)
   - 우측: 흰색 로그인 폼 패널
   - 토큰: tokens.css 의 ELIMS Primary 스케일 그대로
   - 본 파일은 로그인 화면 전용 (body.login-body 스코프)
   ========================================================================== */

body.login-body,
body.login-body *,
body.login-body *::before,
body.login-body *::after {
    box-sizing: border-box;
}

body.login-body {
    background:
        radial-gradient(ellipse 70% 50% at 15% 10%, rgba(37, 99, 235, 0.05) 0%, transparent 55%),
        radial-gradient(ellipse 60% 55% at 85% 90%, rgba(8, 145, 178, 0.04) 0%, transparent 55%),
        var(--surface-muted);
    color: var(--text-primary);
    font-family: var(--font-family-sans);
    -webkit-font-smoothing: antialiased;
    letter-spacing: -0.005em;
    margin: 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 48px 32px;          /* 상·하 / 좌·우 여백 */
}

/* ====== 전체 분할 레이아웃 — 중앙 카드 ====== */
.login-split {
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    width: 100%;
    max-width: 1040px;
    height: min(640px, calc(100vh - 96px));
    border-radius: 20px;
    overflow: hidden;
    background: var(--surface-card);
    box-shadow:
        0 1px 3px rgba(15, 23, 42, 0.06),
        0 18px 40px -12px rgba(15, 23, 42, 0.16),
        0 40px 64px -24px rgba(15, 23, 42, 0.12);
}

/* ==========================================================================
   좌측 — 브랜드 패널
   ========================================================================== */
.login-brand {
    position: relative;
    overflow: hidden;
    display: grid;
    grid-template-rows: auto 1fr;
    padding: 48px 56px 52px;
    color: #fff;
    background:
        radial-gradient(ellipse 120% 90% at 85% 8%, rgba(255, 255, 255, 0.10) 0%, transparent 50%),
        linear-gradient(150deg, var(--color-primary-600) 0%, var(--color-primary-800) 60%, var(--color-primary-900) 100%);
}

/* 콘센트릭 원형 데코 (좌하단) */
.login-brand-deco {
    position: absolute;
    left: -180px;
    bottom: -200px;
    width: 560px;
    height: 560px;
    border-radius: 50%;
    background:
        radial-gradient(circle at center, transparent 0 38%, rgba(255, 255, 255, 0.06) 38% 39%, transparent 39%),
        radial-gradient(circle at center, transparent 0 56%, rgba(255, 255, 255, 0.05) 56% 57%, transparent 57%),
        radial-gradient(circle at center, transparent 0 74%, rgba(255, 255, 255, 0.04) 74% 75%, transparent 75%);
    pointer-events: none;
}
.login-brand::after {
    content: '';
    position: absolute;
    right: -120px;
    top: -120px;
    width: 360px;
    height: 360px;
    border-radius: 50%;
    background: radial-gradient(circle at center, rgba(255, 255, 255, 0.07), transparent 70%);
    pointer-events: none;
}

/* 로고 */
.login-brand-top { position: relative; z-index: 1; }
.login-brand-logo {
    display: inline-flex;
    align-items: center;
    gap: 13px;
}
.login-brand-mark {
    width: 44px;
    height: 44px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.14);
    border: 1px solid rgba(255, 255, 255, 0.22);
    backdrop-filter: blur(4px);
}
.login-brand-mark svg {
    width: 24px;
    height: 24px;
    color: #fff;
}
.login-brand-logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}
.login-brand-logo-text strong {
    font-size: 19px;
    font-weight: var(--font-weight-bold);
    letter-spacing: 0.04em;
}
.login-brand-logo-text small {
    font-size: 11px;
    font-weight: var(--font-weight-medium);
    color: rgba(255, 255, 255, 0.75);
    letter-spacing: 0.02em;
    margin-top: 2px;
}

/* 히어로 카피 — 남은 공간 세로 중앙 */
.login-brand-hero {
    position: relative;
    z-index: 1;
    align-self: center;
}
.login-brand-title-ko {
    font-size: 38px;
    font-weight: var(--font-weight-black);
    line-height: 1.22;
    letter-spacing: -0.02em;
    margin: 0 0 18px;
}
.login-brand-title-en {
    font-size: 18px;
    font-weight: var(--font-weight-semibold);
    line-height: 1.4;
    color: rgba(255, 255, 255, 0.82);
    letter-spacing: 0.01em;
    margin: 0 0 22px;
}
.login-brand-desc {
    font-size: 14px;
    font-weight: var(--font-weight-regular);
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.70);
    max-width: 32ch;
    margin: 0;
    word-break: keep-all;   /* 한국어 단어 중간에서 줄바꿈 방지 ('발행까/지') */
}

/* ==========================================================================
   우측 — 로그인 폼 패널
   ========================================================================== */
.login-panel {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--surface-card);
    padding: 32px;
}
.login-panel-inner {
    width: 100%;
    max-width: 380px;
}

.login-panel-head { margin-bottom: 30px; }
.login-title {
    font-size: 28px;
    font-weight: var(--font-weight-black);
    color: var(--text-primary);
    letter-spacing: -0.02em;
    margin: 0 0 8px;
}
.login-desc {
    font-size: 13px;
    font-weight: var(--font-weight-regular);
    color: var(--text-muted);
    margin: 0;
}

/* Form */
#loginForm {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.login-field {
    display: flex;
    flex-direction: column;
}
.login-field label {
    font-size: 12px;
    font-weight: var(--font-weight-semibold);
    color: var(--text-secondary);
    letter-spacing: -0.01em;
    margin-bottom: 8px;
    padding-left: 2px;
}

.login-input-wrap {
    position: relative;
}
.login-input {
    width: 100%;
    padding: 13px 14px;
    font-size: 14px;
    font-family: inherit;
    font-weight: var(--font-weight-medium);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    background: var(--surface-card);
    color: var(--text-primary);
    letter-spacing: -0.005em;
    transition: all 0.18s cubic-bezier(0.4, 0, 0.2, 1);
}
.login-input::placeholder {
    color: var(--text-subtle);
    font-weight: var(--font-weight-regular);
}
.login-input:hover {
    border-color: var(--border-strong);
}
.login-input:focus {
    outline: none;
    border-color: var(--color-primary-600);
    box-shadow:
        0 0 0 3px rgba(37, 99, 235, 0.10),
        0 1px 2px rgba(15, 23, 42, 0.04);
}
.login-input.has-icon { padding-left: 42px; }
.login-input.has-trail { padding-right: 42px; }

.login-input-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-subtle);
    font-size: 15px;
    pointer-events: none;
    transition: color 0.18s;
}
.login-input-wrap:focus-within .login-input-icon {
    color: var(--color-primary-600);
}
.login-input-trail {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-subtle);
    font-size: 14px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
    border-radius: var(--radius-sm);
    transition: all 0.15s;
    line-height: 0;
}
.login-input-trail:hover {
    color: var(--text-secondary);
    background: var(--surface-hover);
}

/* Remember row */
.login-remember-row {
    margin: 4px 0 14px;
    padding: 0 2px;
}
.login-checkbox {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    font-size: 13px;
    color: var(--text-secondary);
    cursor: pointer;
    font-weight: var(--font-weight-medium);
    user-select: none;
}
.login-checkbox input {
    appearance: none;
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    border: 1.5px solid var(--border-strong);
    border-radius: 4px;
    cursor: pointer;
    position: relative;
    transition: all 0.15s;
    background: var(--surface-card);
    margin: 0;
}
.login-checkbox input:hover {
    border-color: var(--color-primary-600);
}
.login-checkbox input:checked {
    background: var(--color-primary-600);
    border-color: var(--color-primary-600);
}
.login-checkbox input:checked::after {
    content: '';
    position: absolute;
    left: 4px;
    top: 1px;
    width: 4px;
    height: 8px;
    border: solid white;
    border-width: 0 1.5px 1.5px 0;
    transform: rotate(45deg);
}

/* Error alert */
.login-error {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 10px 12px;
    background: var(--color-danger-soft);
    border: 1px solid var(--color-danger);
    border-radius: var(--radius-sm);
    color: var(--color-danger);
    font-size: 13px;
    font-weight: var(--font-weight-medium);
    margin-bottom: 14px;
    line-height: 1.4;
}
.login-error.d-none { display: none; }
.login-error i {
    flex-shrink: 0;
    font-size: 14px;
    margin-top: 1px;
}

/* Login button */
#loginBtnLogin {
    width: 100%;
    padding: 14px;
    font-size: 14px;
    font-weight: var(--font-weight-semibold);
    font-family: inherit;
    letter-spacing: 0.01em;
    background: var(--color-primary-600);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.22s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow:
        0 1px 0 rgba(37, 99, 235, 0.06),
        0 1px 2px rgba(37, 99, 235, 0.08),
        0 4px 12px -2px rgba(37, 99, 235, 0.22),
        inset 0 1px 0 rgba(255, 255, 255, 0.14);
    position: relative;
    overflow: hidden;
}
#loginBtnLogin::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.14), transparent);
    transition: left 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
#loginBtnLogin:hover::before {
    left: 100%;
}
#loginBtnLogin .arrow {
    display: inline-flex;
    transition: transform 0.22s cubic-bezier(0.4, 0, 0.2, 1);
}
#loginBtnLogin:hover {
    background: var(--color-primary-700);
    transform: translateY(-1px);
    box-shadow:
        0 6px 18px -2px rgba(37, 99, 235, 0.34),
        inset 0 1px 0 rgba(255, 255, 255, 0.16);
}
#loginBtnLogin:hover .arrow {
    transform: translateX(3px);
}
#loginBtnLogin:active {
    transform: translateY(0);
}
#loginBtnLogin:disabled {
    cursor: not-allowed;
    opacity: 0.7;
}

/* 하단 보안 안내 */
.login-notes {
    list-style: none;
    margin: 28px 0 0;
    padding: 18px 0 0;
    border-top: 1px solid var(--border-default);
}
.login-notes li {
    position: relative;
    padding-left: 16px;
    font-size: 12px;
    line-height: 1.6;
    color: var(--text-muted);
}
.login-notes li + li { margin-top: 6px; }
.login-notes li::before {
    content: '';
    position: absolute;
    left: 2px;
    top: 8px;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--color-primary-600);
    opacity: 0.55;
}

/* ==========================================================================
   반응형 — 좁은 화면에서는 브랜드 패널 숨기고 폼만
   ========================================================================== */
@media (max-width: 900px) {
    .login-split { grid-template-columns: 1fr; }
    .login-brand { display: none; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .login-input,
    .login-input-icon,
    .login-input-trail,
    #loginBtnLogin,
    #loginBtnLogin::before,
    #loginBtnLogin .arrow {
        transition: none !important;
    }
}