:root {
    --slack-aubergine: #4a154b;
    --slack-text: #1d1c1d;
    --slack-muted: #616061;
    --slack-border: #dddbdd;
    --slack-blue: #1264a3;
    --radius: 12px;
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "Apple SD Gothic Neo",
        "Malgun Gothic", "Helvetica Neue", Arial, sans-serif;
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font);
    color: var(--slack-text);
    background: #f8f8fb;
    min-height: 100vh;
}

.login {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 28px;
    padding: 40px 20px;
}

/* 브랜드 */
.login__brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.login__logo {
    width: 44px;
    height: 44px;
}

.login__brand-name {
    font-size: 30px;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--slack-aubergine);
}

/* 카드 */
.login__card {
    width: 100%;
    max-width: 420px;
    background: #fff;
    border: 1px solid var(--slack-border);
    border-radius: var(--radius);
    padding: 40px 36px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04), 0 8px 24px rgba(0, 0, 0, 0.06);
    text-align: center;
}

.login__title {
    margin: 0 0 8px;
    font-size: 28px;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.login__subtitle {
    margin: 0 0 28px;
    color: var(--slack-muted);
    font-size: 15px;
}

/* Slack 로그인 버튼 */
.login__slack-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 13px 16px;
    border: 1px solid var(--slack-border);
    border-radius: var(--radius);
    background: #fff;
    color: var(--slack-text);
    font-size: 15px;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
    transition: background 0.15s ease, border-color 0.15s ease;
}

.login__slack-btn:hover {
    background: #f7f7f9;
    border-color: #c9c7c9;
}

.login__slack-btn-icon {
    width: 20px;
    height: 20px;
}

/* 구분선 */
.login__divider {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 22px 0;
    color: var(--slack-muted);
    font-size: 13px;
}

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

/* 이메일 폼 */
.login__form {
    display: flex;
    flex-direction: column;
    gap: 14px;
    text-align: left;
}

.login__field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.login__label {
    font-size: 13px;
    font-weight: 700;
    color: var(--slack-text);
}

.login__field input {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--slack-border);
    border-radius: 8px;
    font-size: 15px;
    font-family: inherit;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.login__field input:focus {
    outline: none;
    border-color: var(--slack-aubergine);
    box-shadow: 0 0 0 3px rgba(74, 21, 75, 0.12);
}

.login__email-btn {
    margin-top: 6px;
    width: 100%;
    padding: 13px 16px;
    border: none;
    border-radius: var(--radius);
    background: var(--slack-aubergine);
    color: #fff;
    font-size: 15px;
    font-weight: 700;
    font-family: inherit;
    cursor: pointer;
    transition: background 0.15s ease;
}

.login__email-btn:hover {
    background: #611f64;
}

.login__help {
    margin: 24px 0 0;
    font-size: 14px;
    color: var(--slack-muted);
}

.login__help a,
.login__footer a {
    color: var(--slack-blue);
    text-decoration: none;
}

.login__help a:hover,
.login__footer a:hover {
    text-decoration: underline;
}

/* 푸터 */
.login__footer {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: var(--slack-muted);
}