:root {
    --primary-color: #2c3e50;
    --secondary-color: #34495e;
    --accent-color: #3498db;
    --text-dark: #1a1a1a;
    --text-light: #6b7280;
    --border-color: #e5e7eb;
    --background-light: #f8fafc;
}

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

body {
    min-height: 100vh;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    font-family: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    position: relative;
    overflow: hidden;
}

body::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(52, 152, 219, 0.1) 0%, transparent 70%);
    animation: float 20s ease-in-out infinite;
}

body::after {
    content: '';
    position: absolute;
    bottom: -50%;
    left: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(44, 62, 80, 0.05) 0%, transparent 70%);
    animation: float 15s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0);
    }
    50% {
        transform: translate(50px, 50px);
    }
}

.login-container {
    max-width: 480px;
    width: 100%;
    position: relative;
    z-index: 1;
}

.login-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.08),
        0 2px 8px rgba(0, 0, 0, 0.04);
    overflow: hidden;
    animation: slideUp 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    border: 1px solid rgba(255, 255, 255, 0.8);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(40px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.login-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    padding: 48px 40px;
    text-align: center;
    color: white;
    position: relative;
    overflow: hidden;
}

.login-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.3;
}

.login-header h1 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 10px;
    letter-spacing: -0.5px;
    position: relative;
    z-index: 1;
}

.login-header p {
    font-size: 15px;
    opacity: 0.9;
    margin: 0;
    font-weight: 400;
    position: relative;
    z-index: 1;
}

.login-body {
    padding: 48px 40px;
}

.form-label {
    font-weight: 600;
    color: var(--text-dark);
    font-size: 14px;
    margin-bottom: 10px;
    letter-spacing: -0.2px;
}

.form-control {
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 14px 18px;
    font-size: 15px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background-color: var(--background-light);
    color: var(--text-dark);
}

.form-control::placeholder {
    color: #9ca3af;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(44, 62, 80, 0.08);
    background-color: white;
    outline: none;
}

.input-group-text {
    background: var(--background-light);
    border: 2px solid var(--border-color);
    border-right: none;
    border-radius: 12px 0 0 12px;
    color: var(--text-light);
    padding: 14px 16px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.input-group .form-control {
    border-left: none;
    border-radius: 0 12px 12px 0;
}

.input-group:focus-within .input-group-text {
    border-color: var(--primary-color);
    background-color: white;
    color: var(--primary-color);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border: none;
    border-radius: 12px;
    padding: 15px;
    font-weight: 600;
    font-size: 16px;
    letter-spacing: 0.3px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    margin-top: 12px;
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 24px rgba(44, 62, 80, 0.3);
}

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

.forgot-password {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.forgot-password::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

.forgot-password:hover::after {
    width: 100%;
}

.forgot-password:hover {
    color: var(--secondary-color);
}

.logo-icon {
    font-size: 56px;
    margin-bottom: 16px;
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    width: 100px;
    height: 100px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    position: relative;
    z-index: 1;
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.logo-icon i {
    font-size: 48px;
}

/* Responsividade */
@media (max-width: 576px) {
    .login-body {
        padding: 32px 24px;
    }
    
    .login-header {
        padding: 40px 24px;
    }
    
    .login-header h1 {
        font-size: 28px;
    }
    
    .logo-icon {
        width: 80px;
        height: 80px;
    }
    
    .logo-icon i {
        font-size: 40px;
    }
}

/* Alert de erro customizado */
.alert-danger {
    background-color: #fee2e2;
    border: 1px solid #fecaca;
    color: #991b1b;
    border-radius: 12px;
    font-size: 14px;
}

.alert-danger i {
    color: #dc2626;
}