:root {
    --alert-danger-bg: #f8d7da;
    --alert-danger-border: #dc3545;
    --alert-danger-color: #721c24;
    --alert-warning-bg: #fff3cd;
    --alert-warning-border: #ff9800;
    --alert-warning-color: #856404;
    --alert-success-bg: #d4edda;
    --alert-success-border: #28a745;
    --alert-success-color: #155724;
}

[data-theme="dark"] {
    --alert-danger-bg: #3a1a1d;
    --alert-danger-border: #dc3545;
    --alert-danger-color: #ffb3ba;
    --alert-warning-bg: #3d2f1a;
    --alert-warning-border: #ff9800;
    --alert-warning-color: #ffd699;
    --alert-success-bg: #1a3a2d;
    --alert-success-border: #28a745;
    --alert-success-color: #b3ffcc;
}

.login-container {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 120px 16px 80px;
    min-height: calc(100vh - 72px);
}

.login-container[data-service="kids"] {
    --service-accent: #cc9550;
    --service-accent-strong: #8f5a23;
    --service-accent-hover: #bf8642;
    --service-accent-hover-strong: #7b4a1a;
    --service-accent-line: rgba(191, 134, 66, 0.26);
    --service-accent-soft: rgba(184, 225, 234, 0.18);
    --service-accent-soft-strong: rgba(248, 223, 174, 0.12);
    --service-accent-shadow: rgba(143, 90, 35, 0.16);
}

.login-container[data-service="lite"] {
    --service-accent: #557a2c;
    --service-accent-strong: #7d9c44;
    --service-accent-hover: #4f7228;
    --service-accent-hover-strong: #6d8f3b;
    --service-accent-line: rgba(85, 122, 44, 0.24);
    --service-accent-soft: rgba(85, 122, 44, 0.1);
    --service-accent-soft-strong: rgba(125, 156, 68, 0.08);
    --service-accent-shadow: rgba(85, 122, 44, 0.18);
}

.login-container[data-service="moco"] {
    --service-accent: #31abe5;
    --service-accent-strong: #1e84d4;
    --service-accent-hover: #2a9fd8;
    --service-accent-hover-strong: #1977c3;
    --service-accent-line: rgba(49, 171, 229, 0.24);
    --service-accent-soft: rgba(49, 171, 229, 0.1);
    --service-accent-soft-strong: rgba(30, 132, 212, 0.08);
    --service-accent-shadow: rgba(49, 171, 229, 0.18);
}

.login-container[data-service="day"] {
    --service-accent: #18c0c1;
    --service-accent-strong: #1497ad;
    --service-accent-hover: #16b1b7;
    --service-accent-hover-strong: #12879b;
    --service-accent-line: rgba(24, 183, 188, 0.24);
    --service-accent-soft: rgba(24, 183, 188, 0.12);
    --service-accent-soft-strong: rgba(20, 151, 173, 0.1);
    --service-accent-shadow: rgba(20, 151, 173, 0.18);
}

.login-container[data-service="kids"],
.login-container[data-service="lite"],
.login-container[data-service="moco"],
.login-container[data-service="day"] {
    background:
        radial-gradient(circle at 18% 0%, var(--service-accent-soft), transparent 28%),
        radial-gradient(circle at 84% 8%, var(--service-accent-soft-strong), transparent 24%);
}

.login-card {
    width: 100%;
    max-width: 520px;
    background: var(--card-bg);
    border-radius: 20px;
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 60px rgba(25, 31, 40, 0.08);
    overflow: hidden;
}

.login-container[data-service="kids"] .login-card,
.login-container[data-service="lite"] .login-card,
.login-container[data-service="moco"] .login-card,
.login-container[data-service="day"] .login-card {
    border-color: var(--service-accent-line);
    box-shadow: 0 22px 60px var(--service-accent-shadow);
}

.login-header {
    padding: 40px 36px 24px;
    border-bottom: 1px solid var(--border-color);
    text-align: center;
}

.login-container[data-service="kids"] .login-header,
.login-container[data-service="lite"] .login-header,
.login-container[data-service="moco"] .login-header,
.login-container[data-service="day"] .login-header {
    border-bottom-color: var(--service-accent-line);
    background: linear-gradient(180deg, var(--service-accent-soft) 0%, transparent 100%);
}

.login-header h3 {
    font-weight: 800;
    font-size: 1.8rem;
    margin-bottom: 8px;
}

.login-service-copy {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.login-service-icon {
    flex: 0 0 34px;
    width: 34px;
    height: 34px;
    padding: 3px;
    border-radius: 11px;
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.24);
}

.login-container[data-service="kids"] .login-service-icon,
.login-container[data-service="lite"] .login-service-icon,
.login-container[data-service="moco"] .login-service-icon,
.login-container[data-service="day"] .login-service-icon {
    border-color: var(--service-accent-line);
    background: var(--service-accent-soft);
}

.login-service-icon-image {
    display: block;
    width: 100%;
    height: 100%;
    border-radius: 8px;
    object-fit: cover;
}

.login-header .subtitle {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.login-body {
    padding: 36px;
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.alert-custom {
    border-radius: 14px;
    padding: 18px 20px;
    border-left-width: 4px !important;
}

.alert-custom.alert-danger {
    border-left: 4px solid var(--alert-danger-border);
    background: var(--alert-danger-bg);
    color: var(--alert-danger-color);
}

.alert-custom.alert-warning {
    border-left: 4px solid var(--alert-warning-border);
    background: var(--alert-warning-bg);
    color: var(--alert-warning-color);
}

.alert-custom.alert-success {
    border-left: 4px solid var(--alert-success-border);
    background: var(--alert-success-bg);
    color: var(--alert-success-color);
}

.social-login {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.social-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.btn-social {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 16px;
    border-radius: 12px;
    border: none;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-social:hover {
    transform: translateY(-2px);
}

.btn-kakao {
    background: #fee500;
    color: #181600;
}

.btn-google {
    background: #fff;
    color: #1f2937;
    border: 1px solid #d0d7de;
    box-shadow: 0 8px 20px rgba(15, 23, 42, 0.06);
}

.btn-apple {
    background: #111827;
    color: #fff;
    box-shadow: 0 10px 24px rgba(17, 24, 39, 0.24);
}

.or-divider {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-tertiary);
    font-size: 0.85rem;
}

.or-divider::before,
.or-divider::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--border-color);
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.input-group + .input-group {
    margin-top: 18px;
}

.input-wrapper {
    position: relative;
}

.input-wrapper input {
    width: 100%;
    padding: 14px 16px 14px 46px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: border-color 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
}

.input-wrapper input::placeholder {
    color: transparent;
}

.input-wrapper input:focus::placeholder {
    color: var(--text-tertiary);
}

.input-wrapper input:focus {
    outline: none;
    border-color: var(--primary-color);
    background: var(--bg-primary);
    box-shadow: 0 0 0 4px rgba(49, 130, 246, 0.12);
}

.login-container[data-service="kids"] .input-wrapper input:focus,
.login-container[data-service="lite"] .input-wrapper input:focus,
.login-container[data-service="moco"] .input-wrapper input:focus,
.login-container[data-service="day"] .input-wrapper input:focus {
    border-color: var(--service-accent);
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--service-accent) 14%, transparent);
}

[data-theme="dark"] .input-wrapper input:focus {
    background: var(--bg-secondary);
}

.input-wrapper label {
    position: absolute;
    top: 50%;
    left: 46px;
    transform: translateY(-50%);
    pointer-events: none;
    color: var(--text-tertiary);
    transition: all 0.2s ease;
    font-size: 0.9rem;
}

.input-wrapper input:focus + label,
.input-wrapper input:not(:placeholder-shown) + label {
    top: 8px;
    font-size: 0.72rem;
    color: var(--primary-color);
}

.login-container[data-service="kids"] .input-wrapper input:focus + label,
.login-container[data-service="kids"] .input-wrapper input:not(:placeholder-shown) + label,
.login-container[data-service="lite"] .input-wrapper input:focus + label,
.login-container[data-service="lite"] .input-wrapper input:not(:placeholder-shown) + label,
.login-container[data-service="moco"] .input-wrapper input:focus + label,
.login-container[data-service="moco"] .input-wrapper input:not(:placeholder-shown) + label,
.login-container[data-service="day"] .input-wrapper input:focus + label,
.login-container[data-service="day"] .input-wrapper input:not(:placeholder-shown) + label {
    color: var(--service-accent-strong);
}

.input-icon {
    position: absolute;
    top: 50%;
    left: 16px;
    transform: translateY(-50%);
    color: var(--text-tertiary);
    font-size: 1rem;
}

.toggle-password {
    position: absolute;
    top: 50%;
    right: 16px;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s ease;
    font-size: 1rem;
}

.toggle-password:hover {
    color: var(--text-primary);
}

.toggle-password:focus {
    outline: none;
    color: var(--primary-color);
}

.login-container[data-service="kids"] .toggle-password:focus,
.login-container[data-service="kids"] .bottom-links a,
.login-container[data-service="kids"] .register-link,
.login-container[data-service="lite"] .toggle-password:focus,
.login-container[data-service="lite"] .bottom-links a,
.login-container[data-service="lite"] .register-link,
.login-container[data-service="moco"] .toggle-password:focus,
.login-container[data-service="moco"] .bottom-links a,
.login-container[data-service="moco"] .register-link,
.login-container[data-service="day"] .toggle-password:focus,
.login-container[data-service="day"] .bottom-links a,
.login-container[data-service="day"] .register-link {
    color: var(--service-accent-strong);
}

.btn-login {
    width: 100%;
    padding: 14px;
    border-radius: 12px;
    border: none;
    font-weight: 700;
    font-size: 1rem;
    background: var(--primary-color);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
    margin-top: 16px;
}

.login-container[data-service="kids"] .btn-login,
.login-container[data-service="lite"] .btn-login,
.login-container[data-service="moco"] .btn-login,
.login-container[data-service="day"] .btn-login {
    background: linear-gradient(135deg, var(--service-accent) 0%, var(--service-accent-strong) 100%);
    box-shadow: 0 14px 28px var(--service-accent-shadow);
}

.btn-login:hover:not(:disabled) {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 12px 24px rgba(49, 130, 246, 0.24);
}

.login-container[data-service="kids"] .btn-login:hover:not(:disabled),
.login-container[data-service="lite"] .btn-login:hover:not(:disabled),
.login-container[data-service="moco"] .btn-login:hover:not(:disabled),
.login-container[data-service="day"] .btn-login:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--service-accent-hover) 0%, var(--service-accent-hover-strong) 100%);
    box-shadow: 0 16px 32px color-mix(in srgb, var(--service-accent-strong) 24%, transparent);
}

.btn-login:disabled {
    background: var(--border-color);
    color: var(--text-tertiary);
    cursor: not-allowed;
}

.bottom-links {
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.bottom-links a {
    color: var(--primary-color);
    font-weight: 600;
}

.bottom-links a:hover {
    text-decoration: underline;
}

@media (max-width: 768px) {
    .login-container {
        padding: 96px 16px 64px;
        min-height: calc(100vh - 68px);
    }

    .login-card {
        max-width: 440px;
    }

    .social-buttons {
        flex-direction: column;
    }
}

@media (max-width: 576px) {
    .login-container {
        padding: 88px 12px 56px;
        min-height: calc(100vh - 64px);
    }

    .login-card {
        border-radius: 16px;
    }

    .login-header {
        padding: 32px 24px 20px;
    }

    .login-body {
        padding: 28px 24px 32px;
    }

    .login-service-copy {
        gap: 8px;
    }

    .login-service-icon {
        flex-basis: 30px;
        width: 30px;
        height: 30px;
        border-radius: 10px;
    }
}