/* assets/css/login.css - Modern Login page styles */

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

body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

/* Background Pattern */
body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.1;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.3) 0%, transparent 50%);
}

/* Back Button */
.back-button {
    position: absolute;
    top: 2rem;
    left: 2rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: white;
    text-decoration: none;
    font-weight: 600;
    padding: 0.75rem 1.25rem;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border-radius: 50px;
    transition: all 0.3s;
    z-index: 10;
}

.back-button:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateX(-5px);
}

.back-button svg {
    transition: transform 0.3s;
}

.back-button:hover svg {
    transform: translateX(-3px);
}

.login-container {
    width: 100%;
    max-width: 440px;
    padding: 1rem;
    position: relative;
    z-index: 1;
}

.login-card {
    background: white;
    border-radius: 24px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    padding: 3rem 2.5rem;
    animation: fadeInUp 0.6s ease-out;
}

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

.login-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.login-logo {
    width: 120px;
    height: auto;
    margin-bottom: 1.5rem;
    animation: fadeIn 0.8s ease-out 0.2s both;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.login-header h1 {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
    color: #1a202c;
    font-weight: 700;
}

.text-muted {
    color: #718096;
}

.login-header .text-muted {
    font-size: 1rem;
    margin-bottom: 0;
}

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

.form-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    color: #2d3748;
    font-weight: 600;
    font-size: 0.95rem;
}

.form-group label svg {
    opacity: 0.6;
}

.form-group input {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.3s;
    background: #f7fafc;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
    background: white;
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

.form-group input::placeholder {
    color: #a0aec0;
}

.btn-primary {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1.05rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    margin-top: 1rem;
    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, 0.3), transparent);
    transition: left 0.5s;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.4);
}

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

.btn-text,
.btn-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
}

/* Spinner */
.spinner {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.error-message {
    margin-top: 1.5rem;
    padding: 14px 18px;
    background: #fed7d7;
    color: #742a2a;
    border-radius: 12px;
    border-left: 4px solid #f56565;
    font-size: 0.95rem;
    animation: shake 0.5s;
}

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

.login-footer {
    margin-top: 2rem;
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid #e2e8f0;
}

.login-footer .small {
    font-size: 0.9rem;
    margin: 0;
}

.link-primary {
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s;
}

.link-primary:hover {
    color: #5568d3;
    text-decoration: underline;
}

.security-badge {
    margin-top: 2rem;
    text-align: center;
    color: white;
    font-size: 0.85rem;
    opacity: 0.9;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.security-badge svg {
    opacity: 0.8;
}

/* Mobile Responsive */
@media (max-width: 480px) {
    .back-button {
        top: 1rem;
        left: 1rem;
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }

    .back-button span {
        display: none;
    }

    .login-card {
        padding: 2rem 1.5rem;
        border-radius: 20px;
    }

    .login-logo {
        width: 100px;
    }

    .login-header h1 {
        font-size: 1.5rem;
    }

    .form-group input {
        padding: 12px 16px;
    }

    .btn-primary {
        padding: 14px;
        font-size: 1rem;
    }
}

@media (max-width: 768px) {
    .back-button {
        top: 1.5rem;
        left: 1.5rem;
    }
}