:root {
    --primary-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --background-color: #0f172a;
    --container-bg: #1e293b;
    --input-bg: #2a3a55;
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --error-color: #ef4444;
    --success-color: #22c55e;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    min-height: 100vh;
    background: var(--background-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    position: relative;
    overflow: hidden;
}

.login-container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 420px;
    padding: 2.5rem;
    background: var(--container-bg);
    border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    transform: translateY(0);
    transition: all 0.3s ease;
}

.login-container:hover {
    transform: translateY(-5px);
}

.logo-container {
    text-align: center;
    margin-bottom: 2rem;
}

.logo {
    width: 120px;
    height: 120px;
    margin-bottom: 1.5rem;
    object-fit: contain;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
    100% {
        transform: translateY(0px);
    }
}

.title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 2rem;
}

.form-group {
    position: relative;
    margin-bottom: 1.5rem;
}

.form-control {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    background: var(--input-bg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: all 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: #6366f1;
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.form-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.form-control:focus + .form-icon {
    color: #6366f1;
}

.btn-login {
    width: 100%;
    padding: 1rem;
    background: var(--primary-gradient);
    border: none;
    border-radius: 12px;
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

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

.btn-login::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: rgba(255, 255, 255, 0.1);
    transform: rotate(45deg);
    transition: all 0.3s ease;
}

.btn-login:hover::after {
    transform: rotate(45deg) translateX(50%);
}

.alert {
    padding: 1rem;
    border-radius: 12px;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.alert i {
    margin-right: 0.5rem;
    font-size: 1rem;
}

.alert-danger {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: var(--error-color);
}

.alert-success {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.2);
    color: var(--success-color);
}

.footer {
    text-align: center;
    margin-top: 2rem;
    color: var(--text-secondary);
    font-size: 0.75rem;
}

.footer p {
    margin: 0.5rem 0;
}

.footer i {
    margin-right: 0.25rem;
}

/* Loader animation */
@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.loading-spinner {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.6s linear infinite;
    margin-right: 0.5rem;
}

/* Responsividade */
@media (max-width: 480px) {
    .login-container {
        margin: 1rem;
        padding: 1.5rem;
    }
    
    .title {
        font-size: 1.25rem;
    }
    
    .subtitle {
        font-size: 0.813rem;
    }
    
    .form-control {
        font-size: 0.813rem;
    }
}