:root {
    --primary-color: #1a73e8;
    --bg-gradient: linear-gradient(135deg, #1a73e8 0%, #0d47a1 100%);
}

body {
    background: var(--bg-gradient);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

.login-container {
    width: 100%;
    max-width: 420px;
    padding: 20px;
}

.login-card {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    padding: 40px;
    animation: slideUp 0.5s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-header {
    text-align: center;
    margin-bottom: 35px;
}

.login-header .header-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.login-header .logo-img {
    width: 70px;
    height: 70px;
    border-radius: 16px;
    object-fit: contain;
}

.login-header h1 {
    font-size: 24px;
    font-weight: 600;
    color: #333;
    margin: 0;
}

.login-header p {
    color: #666;
    font-size: 14px;
    margin-top: 8px;
}

.form-floating {
    margin-bottom: 20px;
}

.form-floating > .form-control {
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    padding: 12px 16px;
    height: auto;
    transition: border-color 0.3s;
}

.form-floating > .form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(26, 115, 232, 0.1);
}

.form-floating > label {
    color: #999;
    padding: 12px 16px;
}

.btn-login {
    background: var(--bg-gradient);
    border: none;
    border-radius: 10px;
    padding: 14px;
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    width: 100%;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(26, 115, 232, 0.4);
}

.btn-login:active {
    transform: translateY(0);
}

.error-message {
    background: #fff5f5;
    border: 1px solid #ffcccc;
    color: #dc3545;
    padding: 12px 16px;
    border-radius: 10px;
    margin-bottom: 20px;
    font-size: 14px;
    animation: shake 0.5s;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

.footer-text {
    text-align: center;
    margin-top: 25px;
    color: #999;
    font-size: 12px;
}