:root {
    color: #132238;
    font-family: 'Segoe UI', 'Noto Sans KR', sans-serif;
    line-height: 1.5;
    font-weight: 400;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-width: 320px;
    min-height: 100vh;
    background-color: #0f3d2e; /* 최하단 바탕색: 다크 그린 */
    display: flex;
    align-items: center;
    justify-content: center;
}

button,
input {
    font: inherit;
}

/* 배경 이미지를 담는 큰 박스 */
.app-shell {
    position: relative;
    width: 98vw; /* 좌우 길이를 더 늘려 배경 노출 감소 */
    height: 96vh; /* 상하 균형을 위해 높이도 살짝 조정 */
    background: 
        linear-gradient(rgba(15, 61, 46, 0.4), rgba(15, 61, 46, 0.6)),
        url('https://images.unsplash.com/photo-1522071820081-009f0129c71c?auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    border: 4px solid rgba(255, 255, 240, 0.801); /* 테두리 굵기를 8px로 대폭 강화 */
    border-radius: 20px; /* 모서리 각도 조절 (48px -> 20px) */
    box-shadow: 0 40px 100px rgba(0, 0, 0, 0.4);
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow-y: auto;
    padding: 28px 24px;
}

.system-header {
    margin-top: 5vh;
    transform: translateY(-20px);
    text-align: center;
    color: rgba(255, 255, 240, 0.95); /* 아이보리색 타이틀 */ /*(255, 255, 240, 0.801) (255, 255, 255, 0.95)*/
    text-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    z-index: 10;
}

.system-header .sub-title {
    display: block;
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.system-header .main-title {
    margin: 0;
    font-size: clamp(2rem, 3.4vw, 2.35rem);
    font-weight: 800;
}

.login-panel {
    width: min(100%, 720px);
    margin-top: 3vh;
    margin-bottom: auto; /* */
    padding: 40px 40px 36px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 28px;
    background: rgba(255, 255, 240, 0.801); /* 로그인 카드 배경 (아이보리 화이트) */ /*(255, 255, 240, 0.801) (255, 255, 255, 0.92)*/
    box-shadow: 0 32px 80px rgba(0, 0, 0, 0.2);
    z-index: 20;
}

.panel-heading h1 {
    margin: 0;
    font-size: clamp(1.7rem, 2.5vw, 2.15rem);
    line-height: 1.05;
    color: #0f3d2e;
}

.panel-heading p {
    margin: 10px 0 0;
    color: #4a6659;
    font-size: 0.95rem;
}

.login-form {
    display: grid;
    gap: 14px;
    margin-top: 22px;
}

.field {
    display: grid;
    gap: 8px;
}

.field label {
    color: #0a291f;
    font-size: 0.92rem;
    font-weight: 700;
}

.text-input {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid rgba(15, 61, 46, 0.2);
    border-radius: 16px;
    background: #fdfefe;
    color: #132238;
    transition: all 160ms ease;
}

.text-input:focus {
    outline: none;
    border-color: #0f3d2e;
    box-shadow: 0 0 0 4px rgba(15, 61, 46, 0.14);
    transform: translateY(-1px);
}

.input-hint {
    margin: 0;
    min-height: 20px;
    color: #5c746b;
    font-size: 0.9rem;
}

.primary-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 50px;
    padding: 0 20px;
    border: 0;
    border-radius: 16px;
    background: linear-gradient(180deg, #185c45 0%, #0f3d2e 100%);
    color: #f8fbff;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 20px 40px rgba(15, 61, 46, 0.24);
    transition: all 160ms ease;
}

.primary-button:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 24px 44px rgba(15, 61, 46, 0.3);
}

.primary-button:disabled {
    cursor: not-allowed;
    opacity: 0.54;
    box-shadow: none;
}

.status-card,
.success-panel {
    margin-top: 18px;
    padding: 16px 18px;
    border-radius: 18px;
    border: 1px solid rgba(15, 61, 46, 0.15);
}

.status-card {
    background: #f4f9f7;
}

.status-card strong {
    display: block;
    margin-bottom: 8px;
    color: #0f3d2e;
}

.status-card p,
.success-panel p {
    margin: 0;
    color: #5a7369;
}

.success-panel {
    background: linear-gradient(180deg, #f3f8f5 0%, #edf5ef 100%);
    border-color: rgba(15, 61, 46, 0.18);
}

.success-label {
    margin-bottom: 6px;
    color: #0f3d2e;
    font-size: 0.72rem;
    font-weight: 800;
    text-transform: uppercase;
}

.success-panel h3 {
    margin: 0 0 6px;
    color: #0a291f;
    font-size: 1.2rem;
}

.hidden {
    display: none;
}

@media (max-width: 640px) {
    .app-shell {
        width: 98vw;
        height: 98vh;
        border-width: 4px; /* 모바일에서는 테두리 살짝 줄임 */
        border-radius: 12px;
        padding: 20px 14px;
    }

    .system-header {
        margin-top: 2vh;
        transform: translateY(0);
    }

    .system-header .sub-title {
        font-size: 1rem;
    }

    .system-header .main-title {
        font-size: clamp(1.55rem, 7vw, 1.95rem);
    }

    .login-panel {
        width: min(100%, 640px);
        margin-top: 18px;
        padding: 26px 20px;
        border-radius: 24px;
    }
}

    /* Dashboard Specific Styles */
    .dashboard-panel {
        width: min(100%, 920px);
        padding: 42px 40px 34px;
    }

    .dashboard-content {
    display: grid;
    gap: 18px;
    margin-top: 20px;
    }

    .welcome-msg {
    margin-bottom: 18px;
    text-align: center;
    }

    .welcome-msg h2 {
    font-size: clamp(1.9rem, 2.8vw, 2.15rem);
    color: #0f3d2e;
    margin: 0 0 8px 0;
    }

    .welcome-msg p {
    color: #4a6659;
    font-size: 1rem;
    margin: 0;
    }

    .info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    }

    .info-card {
    background: rgba(255, 255, 255, 0.75); /* 투명도 살짝 조정 */
    border-radius: 20px;
    padding: 24px;
    border: 1px solid rgba(15, 61, 46, 0.12);
    box-shadow: 0 10px 30px rgba(15, 61, 46, 0.05); /* 카드에 미세한 그림자 추가 */
    }

    .card-title {
    margin: 0 0 14px 0;
    font-size: 1.18rem;
    color: #0f3d2e;
    display: flex;
    align-items: center;
    gap: 8px;
    border-bottom: 1px solid rgba(15, 61, 46, 0.1);
    padding-bottom: 10px;
    }

    .info-list {
    list-style: none;
    padding: 0;
    margin: 0;
    }

    .info-item {
    display: flex;
    flex-direction: column;
    padding: 10px 0;
    border-bottom: 1px dashed rgba(15, 61, 46, 0.1);
    }

    .info-item:last-child {
    border-bottom: none;
    }

    .info-label {
    font-size: 0.82rem;
    color: #5a7369;
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    }

    .info-value {
    font-size: 1rem;
    color: #0a291f;
    font-weight: 600;
    }

    .badge {
    display: inline-block;
    padding: 5px 14px;
    border-radius: 10px;
    font-size: 0.98rem;
    font-weight: 650;
    background-color: #0f3d2e;
    color: #f8fbff;
    border: 2px solid #185c45;
    box-shadow: 0 4px 12px rgba(15, 61, 46, 0.15);
    letter-spacing: 0.5px;
    }

    .footer-actions {
    margin-top: 28px;
    display: flex;
    justify-content: center;
    }

    .secondary-button {
    background: linear-gradient(180deg, #185c45 0%, #0f3d2e 100%);
    border: none;
    color: #f8fbff;
    padding: 12px 40px;
    border-radius: 16px;
    font-weight: 700;
    cursor: pointer;
    box-shadow: none; /* 초기 그림자 없음 (로그인 입력 전과 동일) */
    opacity: 0.54; /* 초기 투명도 (로그인 입력 전과 동일) */
    transition: all 160ms ease;
    }

    .secondary-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 40px rgba(15, 61, 46, 0.28); /* 마우스 오버 시 그림자 생성 */
    opacity: 1; /* 마우스 오버 시 선명하게 */
    }

    /* Dashboard specific background override */
    .dashboard-shell {
        background: 
            linear-gradient(rgba(15, 61, 46, 0.5), rgba(15, 61, 46, 0.7)),
            url('https://images.unsplash.com/photo-1497366216548-37526070297c?auto=format&fit=crop&w=1920&q=80') !important;
        background-size: cover !important;
        background-position: center !important;
    }

    @media (max-width: 640px) {
        .dashboard-panel {
            padding: 28px 20px 24px;
        }

        .welcome-msg h2 {
            font-size: 1.65rem;
        }

        .welcome-msg p {
            font-size: 0.92rem;
        }

        .info-grid {
            grid-template-columns: 1fr;
            gap: 16px;
        }

        .info-card {
            padding: 18px;
            border-radius: 18px;
        }

        .card-title {
            font-size: 1.05rem;
        }

        .footer-actions {
            margin-top: 22px;
        }

        .secondary-button {
            width: 100%;
            padding: 12px 20px;
        }
    }