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

body {
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    padding: 20px;
}

.login-wrapper {
    width: 100%;
    max-width: 420px;
}

.login-card {
    background: #ffffff;
    border-radius: 16px;
    padding: 40px 36px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
}

.login-header {
    text-align: center;
    margin-bottom: 28px;
}

.login-logo {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: 12px;
    background: linear-gradient(135deg, #4f46e5, #4338ca);
    color: #fff;
    font-weight: 700;
    font-size: 15px;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
}

.login-header h1 {
    font-size: 24px;
    color: #0f172a;
    margin-bottom: 6px;
}

.login-header p {
    font-size: 14px;
    color: #64748b;
}

.alert {
    padding: 12px 14px;
    border-radius: 8px;
    font-size: 13.5px;
    margin-bottom: 20px;
}

.alert-error {
    background: #fef2f2;
    color: #b91c1c;
    border: 1px solid #fecaca;
}

.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-size: 13.5px;
    font-weight: 600;
    color: #334155;
    margin-bottom: 6px;
}

.form-group input[type="text"],
.form-group input[type="password"] {
    width: 100%;
    padding: 12px 14px;
    font-size: 14.5px;
    border: 1.5px solid #e2e8f0;
    border-radius: 8px;
    outline: none;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
    color: #0f172a;
}

.form-group input[type="text"]:focus,
.form-group input[type="password"]:focus {
    border-color: #4f46e5;
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.12);
}

.password-field {
    position: relative;
}

.password-field input {
    padding-right: 42px;
}

.toggle-password {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    color: #94a3b8;
    display: flex;
    align-items: center;
    padding: 4px;
}

.toggle-password:hover {
    color: #4f46e5;
}

.form-options {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    font-size: 13.5px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 6px;
    color: #475569;
    cursor: pointer;
}

.checkbox-label input {
    accent-color: #4f46e5;
}

.forgot-link {
    color: #4f46e5;
    text-decoration: none;
    font-weight: 500;
}

.forgot-link:hover {
    text-decoration: underline;
}

.btn-login {
    width: 100%;
    padding: 13px;
    background: linear-gradient(135deg, #4f46e5, #4338ca);
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: opacity 0.15s ease, transform 0.05s ease;
}

.btn-login:hover {
    opacity: 0.92;
}

.btn-login:active {
    transform: scale(0.99);
}

.login-footer {
    text-align: center;
    margin-top: 24px;
    font-size: 12.5px;
    color: #94a3b8;
}