/* ============================================================
 * Login Page (PC 인트라넷) — 모던 카드형 UI + 반응형
 *
 * 격리 전략:
 *  - 모든 클래스는 'login-page-' prefix 로 시작.
 *  - 외부 글로벌 reset (body { font-size: 15px !important; letter-spacing: -.5px } 등)
 *    영향 받지 않도록 카드 내부 요소에 명시적 재설정.
 *  - form 의 id 도 'login-page-form' 으로 두어 style.css 의 '#login-form' 셀렉터 충돌 회피.
 *
 * 반응형 브레이크포인트:
 *  - PC 기본 (≥ 768px)
 *  - 태블릿 (≤ 767px)
 *  - 작은 모바일 (≤ 480px)
 *  - 매우 작은 모바일 (≤ 360px)
 * ============================================================ */

.login-page,
.login-page * {
    box-sizing: border-box;
}

.login-page {
    /* viewport 전체를 우리 배경으로 덮어 외부 layout(container-fluid/sidebar/row/col 등) 영향 차단.
       fixed + inset:0 으로 좁은 폭에서 외부 요소가 가로 스크롤을 만드는 케이스 자체를 막는다. */
    position: fixed;
    inset: 0;
    z-index: 1000;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background:
        radial-gradient(circle at 20% 20%, rgba(72, 95, 199, 0.12), transparent 60%),
        radial-gradient(circle at 80% 80%, rgba(45, 156, 219, 0.10), transparent 55%),
        linear-gradient(135deg, #f4f6fb 0%, #eef1f8 100%);
    font-family: -apple-system, BlinkMacSystemFont, 'Apple SD Gothic Neo', 'Pretendard', 'Noto Sans KR', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    color: #1f2937;
    letter-spacing: normal;
}

.login-page-card {
    width: 100%;
    max-width: 420px;
    background: #ffffff;
    border-radius: 16px;
    padding: 40px 36px 32px;
    border: 1px solid rgba(0, 0, 0, 0.05);
    box-shadow:
        0 18px 50px -20px rgba(31, 41, 55, 0.18),
        0 4px 12px -4px rgba(31, 41, 55, 0.08);
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.login-page-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    text-align: center;
}

.login-page-brand {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: #6b7280;
    margin: 0 !important;
    line-height: 1.4;
}

/* 외부 #login-form h1 의 font-size:34px / margin:24px 0 / letter-spacing:-0.74px 덮기 */
.login-page-card .login-page-title,
.login-page .login-page-title {
    font-size: 22px;
    font-weight: 700;
    margin: 0 !important;
    color: #111827;
    letter-spacing: -0.01em;
    font-family: inherit;
    line-height: 1.3;
    text-align: center;
}

.login-page-form {
    /* 외부 #login-form 의 padding/border/background 셀렉터 충돌 방지 위해
       form id 자체를 'login-page-form' 으로 분리했지만 안전망 차원에서 한 번 더 명시. */
    width: auto;
    padding: 0 !important;
    border: none !important;
    background: transparent !important;
    border-radius: 0 !important;
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin: 0 !important;
}

.login-page-field {
    position: relative;
    display: flex;
    align-items: center;
    margin: 0 !important;
}

.login-page-field-icon {
    position: absolute;
    left: 14px;
    color: #9ca3af;
    font-size: 20px !important;
    pointer-events: none;
    transition: color 0.15s ease;
}

/* 외부 #login-form .input input 의 height/font-size/padding/border 덮기 */
.login-page-card .login-page-input,
.login-page .login-page-input {
    width: 100%;
    height: 48px;
    padding: 0 14px 0 44px;
    border: 1px solid #e5e7eb;
    border-radius: 10px;
    background: #f9fafb;
    font-size: 15px;
    color: #111827;
    transition: border-color 0.15s ease, background-color 0.15s ease, box-shadow 0.15s ease;
    -webkit-appearance: none;
    appearance: none;
    outline: none;
    letter-spacing: normal;
}

.login-page-input::placeholder {
    color: #9ca3af;
}

.login-page-input:hover {
    background: #ffffff;
    border-color: #d1d5db;
}

.login-page-input:focus {
    background: #ffffff;
    border-color: #4f6cf0;
    box-shadow: 0 0 0 3px rgba(79, 108, 240, 0.15);
}

.login-page-field:focus-within .login-page-field-icon {
    color: #4f6cf0;
}

.login-page-options {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 2px;
}

.login-page-remember {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: #4b5563;
    cursor: pointer;
    user-select: none;
    margin: 0;
}

.login-page-remember input {
    width: 16px;
    height: 16px;
    margin: 0;
    accent-color: #4f6cf0;
    cursor: pointer;
}

/* 외부 #login-form button 의 다양한 base 스타일 덮기 */
.login-page-card .login-page-submit,
.login-page .login-page-submit {
    width: 100%;
    height: 48px;
    min-width: 0;
    border: none;
    border-radius: 10px;
    background: linear-gradient(135deg, #4f6cf0 0%, #3a55d6 100%);
    color: #ffffff;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 0.01em;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 4px;
    padding: 0;
    transition: transform 0.05s ease, box-shadow 0.15s ease, opacity 0.15s ease;
    box-shadow: 0 6px 14px -6px rgba(79, 108, 240, 0.55);
    font-family: inherit;
    line-height: 1;
    white-space: nowrap;
}

.login-page-submit:hover:not(:disabled) {
    box-shadow: 0 10px 22px -8px rgba(79, 108, 240, 0.6);
}

.login-page-submit:active:not(:disabled) {
    transform: translateY(1px);
}

.login-page-submit:disabled,
.login-page-submit.is-loading {
    cursor: not-allowed;
    opacity: 0.7;
}

.login-page-submit-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.45);
    border-top-color: #ffffff;
    border-radius: 50%;
    animation: login-page-spin 0.7s linear infinite;
    display: none;
}

.login-page-submit.is-loading .login-page-submit-spinner {
    display: inline-block;
}

.login-page-submit.is-loading .login-page-submit-label {
    opacity: 0.85;
}

@keyframes login-page-spin {
    to { transform: rotate(360deg); }
}

.login-page-footer {
    display: flex;
    flex-direction: column;
    gap: 8px;
    align-items: center;
    text-align: center;
}

.login-page-notice {
    font-size: 12px;
    line-height: 1.5;
    color: #9ca3af;
    margin: 0 !important;
}

.login-page-warning {
    font-size: 12px;
    line-height: 1.5;
    color: #b91c1c;
    background: rgba(254, 226, 226, 0.55);
    border: 1px solid rgba(248, 113, 113, 0.25);
    border-radius: 8px;
    padding: 10px 12px;
    margin: 0 !important;
    text-align: left;
}

/* ============================================================
 * 반응형
 * ============================================================ */

/* 태블릿 (≤ 767px) */
@media (max-width: 767px) {
    .login-page {
        padding: 20px 16px;
    }
    .login-page-card {
        max-width: 100%;
        padding: 32px 24px 24px;
        border-radius: 14px;
        gap: 20px;
    }
    .login-page-card .login-page-title,
    .login-page .login-page-title {
        font-size: 20px;
    }
}

/* 작은 모바일 (≤ 480px) */
@media (max-width: 480px) {
    .login-page {
        padding: 16px 14px;
    }
    .login-page-card {
        padding: 28px 20px 20px;
        border-radius: 12px;
        gap: 18px;
    }
    .login-page-brand {
        font-size: 11px;
        letter-spacing: 0.14em;
    }
    .login-page-card .login-page-title,
    .login-page .login-page-title {
        font-size: 19px;
    }
    .login-page-card .login-page-input,
    .login-page .login-page-input {
        height: 46px;
        font-size: 16px; /* iOS 자동 zoom 방지 */
        padding-left: 42px;
    }
    .login-page-field-icon {
        left: 12px;
        font-size: 18px !important;
    }
    .login-page-card .login-page-submit,
    .login-page .login-page-submit {
        height: 48px;
        font-size: 15px;
    }
    .login-page-warning {
        font-size: 11.5px;
        padding: 9px 11px;
    }
    .login-page-notice {
        font-size: 11.5px;
    }
}

/* 매우 작은 모바일 (≤ 360px) */
@media (max-width: 360px) {
    .login-page {
        padding: 12px 10px;
    }
    .login-page-card {
        padding: 24px 16px 18px;
        gap: 16px;
    }
    .login-page-card .login-page-title,
    .login-page .login-page-title {
        font-size: 18px;
    }
}

/* 짧은 화면 (가로 모드 / 작은 노트북) — 카드가 viewport 보다 클 때 스크롤 허용 */
@media (max-height: 640px) {
    .login-page {
        align-items: flex-start;
        padding-top: 24px;
        padding-bottom: 24px;
    }
}