:root {
    --login-bg-deep: #1a2a3a;
    --login-bg-mid: #2c3e50;
    --login-accent: #2980b9;
    --login-accent-light: #3498db;
    --login-surface: rgba(255, 255, 255, 0.92);
    --login-border: rgba(255, 255, 255, 0.35);
    --login-text: #2c3e50;
    --login-muted: #6b7c8f;
    --login-shadow: 0 24px 64px rgba(15, 23, 42, 0.28);
    --login-radius: 20px;
}

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

body.login-page {
    margin: 0;
    min-height: 100vh;
    font-family: 'Noto Sans KR', 'Roboto', sans-serif;
    color: var(--login-text);
    background: var(--login-bg-mid);
    overflow-x: hidden;
}

.login-shell {
    display: grid;
    min-height: 100vh;
    grid-template-columns: 1fr;
}

.login-hero {
    display: none;
    position: relative;
    padding: 3rem;
    color: #fff;
    background:
        radial-gradient(circle at 20% 20%, rgba(52, 152, 219, 0.35), transparent 45%),
        radial-gradient(circle at 80% 80%, rgba(41, 128, 185, 0.4), transparent 50%),
        linear-gradient(145deg, var(--login-bg-deep) 0%, var(--login-bg-mid) 55%, #1f4e79 100%);
    overflow: hidden;
}

.login-hero::before,
.login-hero::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.45;
    animation: login-float 12s ease-in-out infinite;
}

.login-hero::before {
    width: 280px;
    height: 280px;
    top: -60px;
    right: -40px;
    background: #3498db;
}

.login-hero::after {
    width: 220px;
    height: 220px;
    bottom: -40px;
    left: -30px;
    background: #5dade2;
    animation-delay: -6s;
}

@keyframes login-float {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(18px) scale(1.05); }
}

.login-hero-content {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 420px;
    margin: auto;
    padding: 2.25rem 2rem 2rem;
    text-align: left;
    border-radius: var(--login-radius);
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.14);
    box-shadow: 0 20px 48px rgba(0, 0, 0, 0.22);
    backdrop-filter: blur(10px);
}

.login-brand-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.45rem 0.9rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.18);
    font-size: 0.8rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
}

.login-hero h1 {
    font-size: clamp(1.8rem, 3vw, 2.6rem);
    font-weight: 700;
    line-height: 1.25;
    margin: 0 0 1rem;
}

.login-hero p {
    margin: 0;
    font-size: 1rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.82);
}

.login-hero-features {
    margin-top: 2.5rem;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 0.85rem;
}

.login-hero-features li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.9);
}

.login-hero-features i {
    width: 2rem;
    height: 2rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.12);
    font-size: 1rem;
}

.login-panel {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    background:
        radial-gradient(circle at top right, rgba(52, 152, 219, 0.12), transparent 40%),
        linear-gradient(180deg, #f4f8fc 0%, #eef3f8 100%);
}

.login-card {
    width: 100%;
    max-width: 420px;
    padding: 2.25rem 2rem 2rem;
    border-radius: var(--login-radius);
    background: var(--login-surface);
    border: 1px solid rgba(255, 255, 255, 0.8);
    box-shadow: var(--login-shadow);
    backdrop-filter: blur(12px);
    animation: login-rise 0.55s ease-out;
}

@keyframes login-rise {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-card-header {
    text-align: center;
    margin-bottom: 1.75rem;
}

.login-logo {
    width: 3.25rem;
    height: 3.25rem;
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--login-accent) 0%, var(--login-accent-light) 100%);
    color: #fff;
    font-size: 1.5rem;
    box-shadow: 0 10px 24px rgba(41, 128, 185, 0.35);
}

.login-card-header h2 {
    margin: 0 0 0.35rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--login-text);
}

.login-card-header p {
    margin: 0;
    font-size: 0.92rem;
    color: var(--login-muted);
}

.login-field {
    margin-bottom: 1.15rem;
}

.login-field label {
    display: block;
    margin-bottom: 0.45rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--login-text);
}

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

.login-input-wrap i.field-icon {
    position: absolute;
    left: 0.95rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--login-muted);
    font-size: 1rem;
    pointer-events: none;
    transition: color 0.2s ease;
}

.login-input-wrap input {
    width: 100%;
    height: 3rem;
    padding: 0 2.75rem 0 2.65rem;
    border: 1.5px solid #d8e2ec;
    border-radius: 12px;
    background: #fff;
    font-size: 0.95rem;
    color: var(--login-text);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.login-input-wrap input::placeholder {
    color: #a0aec0;
}

.login-input-wrap input:focus {
    outline: none;
    border-color: var(--login-accent);
    box-shadow: 0 0 0 4px rgba(41, 128, 185, 0.14);
}

.login-input-wrap:focus-within i.field-icon {
    color: var(--login-accent);
}

.login-toggle-password {
    position: absolute;
    right: 0.65rem;
    top: 50%;
    transform: translateY(-50%);
    width: 2rem;
    height: 2rem;
    border: none;
    border-radius: 8px;
    background: transparent;
    color: var(--login-muted);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s ease, background 0.2s ease;
}

.login-toggle-password:hover {
    color: var(--login-accent);
    background: rgba(41, 128, 185, 0.08);
}

.login-options {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: 0.25rem 0 1.35rem;
}

.login-remember {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    user-select: none;
    font-size: 0.875rem;
    color: var(--login-muted);
}

.login-remember input {
    width: 1rem;
    height: 1rem;
    accent-color: var(--login-accent);
    cursor: pointer;
}

.login-submit {
    width: 100%;
    height: 3rem;
    border: none;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--login-accent) 0%, var(--login-accent-light) 100%);
    color: #fff;
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    cursor: pointer;
    box-shadow: 0 12px 24px rgba(41, 128, 185, 0.28);
    transition: transform 0.15s ease, box-shadow 0.2s ease, filter 0.2s ease;
}

.login-submit:hover {
    transform: translateY(-1px);
    box-shadow: 0 16px 28px rgba(41, 128, 185, 0.34);
    filter: brightness(1.03);
}

.login-submit:active {
    transform: translateY(0);
}

.login-error {
    margin-top: 1rem;
    padding: 0.85rem 1rem;
    border-radius: 12px;
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #b91c1c;
    font-size: 0.875rem;
    line-height: 1.5;
}

.login-field-error {
    margin-top: 0.35rem;
    font-size: 0.8rem;
    color: #dc2626;
}

.login-mobile-brand {
    display: block;
    text-align: center;
    margin-bottom: 1.25rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--login-muted);
    letter-spacing: 0.02em;
}

@media (min-width: 992px) {
    .login-shell {
        grid-template-columns: 1.05fr 0.95fr;
    }

    .login-hero {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .login-mobile-brand {
        display: none;
    }
}

@media (max-width: 480px) {
    .login-card {
        padding: 1.75rem 1.35rem 1.5rem;
        border-radius: 16px;
    }
}