:root {
    --mint: #4F9F40;
    --mint-dark: #107341;
    --mint-light: #61BC00;

}

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

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-family: "Segoe UI", sans-serif;
    background: url('../images/bg-login.png') center center / cover no-repeat fixed;
    padding: 1.5rem;
}

/* ── Card ── */
.login-card {
    width: 100%;
    max-width: 400px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.18), 0 4px 16px rgba(0,0,0,0.10);
    overflow: hidden;
    opacity: 1;
    transform: translateY(0);
    animation: fadeUp .55s cubic-bezier(.22,.68,0,1.2) forwards;
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ── Header xanh ── */
.card-header-bar {
    background: linear-gradient(135deg, var(--mint-dark), var(--mint-light)) !important;
    padding: 1rem 0;
    text-align: center;
}
.card-header-bar img {
    max-width: 100px;
    height: auto;
    animation: pulse 2.5s infinite;
    filter: brightness(0) invert(1);  /* trắng hóa logo — xóa dòng này nếu logo đã có nền trắng */
}

@keyframes pulse {
    0%,100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* ── Body ── */
.card-body-inner {
    padding: 1.8rem 2rem 1.5rem;
}

/* ── Tab ── */
.nav-tabs {
    border-bottom: 2px solid #eee;
    margin-bottom: 1.4rem;
    gap: 0;
}
.nav-tabs .nav-link {
    color: #999;
    font-weight: 600;
    font-size: 14px;
    border: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    padding: .45rem 1.2rem;
    border-radius: 0;
    background: none;
    transition: color .2s, border-color .2s;
    letter-spacing: .3px;
}
.nav-tabs .nav-link:hover {
    color: var(--mint);
    border-bottom-color: var(--mint);
}
.nav-tabs .nav-link.active {
    color: var(--mint-dark);
    border-bottom: 2px solid var(--mint-dark);
    background: none;
}

/* ── Alert ── */
.alert { font-size: 13.5px; border-radius: 8px; padding: .6rem .9rem; }

/* ── Input ── */
.form-control {
    border-radius: 8px;
    padding: .7rem 1rem;
    border: 1.5px solid #e0e0e0;
    font-size: 14.5px;
    color: #333;
    background: #fafafa;
    transition: border-color .2s, box-shadow .2s, background .2s;
}
.form-control:focus {
    border-color: var(--mint);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(62,180,137,.12);
    outline: none;
}
.form-control::placeholder { color: #bbb; }

/* ── Input icon wrapper ── */
.input-wrap {
    position: relative;
    margin-bottom: .85rem;
}
.input-wrap .input-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: #bbb;
    font-size: 16px;
    pointer-events: none;
    transition: color .2s;
}
.input-wrap .form-control {
    padding-left: 2.4rem;
}
.input-wrap .form-control:focus ~ .input-icon,
.input-wrap:focus-within .input-icon {
    color: var(--mint);
}

/* ── Button ── */
.btn-login {
    width: 100%;
    padding: .78rem;
    font-size: 15px;
    font-weight: 700;
    color: #fff;
    background: linear-gradient(135deg, var(--mint-dark), var(--mint-light)) !important;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    letter-spacing: .5px;
    transition: opacity .2s, transform .15s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: .5rem;
}
.btn-login:hover  { opacity: .88; transform: translateY(-1px); }
.btn-login:active { transform: translateY(0); }
.btn-login:disabled { opacity: .65; cursor: not-allowed; transform: none; }

/* ── Footer card ── */
.card-footer-inner {
    border-top: 1px solid #f0f0f0;
    padding: 1rem 2rem;
    background: #fafafa;
}
.card-footer-inner a {
    display: inline-block;
    color: var(--mint-dark);
    font-size: 13px;
    text-decoration: none;
    margin-right: 1rem;
    line-height: 2;
}
.card-footer-inner a:hover { text-decoration: underline; }
.card-footer-inner .hotline {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: #666;
    margin-top: .2rem;
}

/* ── Copyright ── */
.login-copyright {
    margin-top: 1.2rem;
    font-size: 12.5px;
    color: rgba(255,255,255,.75);
    text-align: center;
    text-shadow: 0 1px 3px rgba(0,0,0,.3);
}