:root {
    --primary-blue: #1e3a8a;
    --accent-red: #e63946;
    --dark-red: #c62f3a;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --white: #ffffff;
    --border-color: #e5e7eb;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    min-height: 100vh;
    background: url('img/image_bg.png') no-repeat center bottom;
    background-size: cover;
    background-color: var(--white);
    display: flex;
    flex-direction: column;
}

a {
    text-decoration: none;
}

/* ===== Top bar ===== */
.login-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem 2.5rem;
}

.login-topbar img {
    height: 44px;
    width: auto;
}

.login-topbar-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.9rem;
    color: var(--text-light);
}

.btn-outline-red {
    border: 2px solid var(--accent-red);
    color: var(--accent-red);
    background: var(--white);
    padding: 0.5rem 1.4rem;
    border-radius: 8px;
    font-weight: 700;
    font-size: 0.9rem;
    transition: all 0.25s ease;
}

.btn-outline-red:hover {
    background: var(--accent-red);
    color: var(--white);
}

/* ===== Main ===== */
.login-main {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1.5rem 6rem;
}

.login-card {
    width: 100%;
    max-width: 420px;
    background: var(--white);
    border-radius: 24px;
    box-shadow: 0 25px 60px rgba(15, 27, 61, 0.18);
    padding: 2.5rem 2.25rem;
}

.login-card-title {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--text-dark);
    text-align: center;
    margin-bottom: 0.4rem;
}

.login-card-subtitle {
    font-size: 0.92rem;
    color: var(--text-light);
    text-align: center;
    margin-bottom: 1.75rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-label-modern {
    display: block;
    font-weight: 700;
    font-size: 0.85rem;
    color: var(--text-dark);
    margin-bottom: 0.4rem;
}

.input-with-icon {
    position: relative;
}

.input-with-icon i.field-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
    font-size: 0.95rem;
}

.input-with-icon input {
    width: 100%;
    border: 1.5px solid var(--border-color);
    border-radius: 12px;
    padding: 0.8rem 1rem 0.8rem 2.6rem;
    font-size: 0.95rem;
    transition: border-color 0.25s ease;
}

.input-with-icon input:focus {
    outline: none;
    border-color: var(--accent-red);
}

.toggle-password {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-light);
    cursor: pointer;
}

.form-row-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    font-size: 0.88rem;
}

.remember-me {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-light);
}

.remember-me input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--accent-red);
}

.forgot-link {
    color: var(--accent-red);
    font-weight: 600;
}

.btn-login-submit {
    width: 100%;
    background: var(--accent-red);
    color: var(--white);
    border: none;
    padding: 0.9rem 1rem;
    border-radius: 12px;
    font-weight: 700;
    font-size: 0.95rem;
    letter-spacing: 0.02em;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    transition: background 0.25s ease;
    cursor: pointer;
}

.btn-login-submit:hover {
    background: var(--dark-red);
}

.alert-login-error {
    background: rgba(230, 57, 70, 0.1);
    color: var(--dark-red);
    border-left: 4px solid var(--accent-red);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 0.88rem;
    margin-bottom: 1.25rem;
}

@media (max-width: 576px) {
    .login-topbar {
        padding: 1.25rem 1.25rem;
    }

    .login-card {
        padding: 2rem 1.5rem;
    }
}