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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-container {
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    overflow: hidden;
    width: 100%;
    max-width: 900px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: 600px;
}

.login-left {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 60px 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    position: relative;
    overflow: hidden;
}

    .login-left::before {
        content: '';
        position: absolute;
        top: -50%;
        left: -50%;
        width: 200%;
        height: 200%;
        background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="white" opacity="0.1"/><circle cx="75" cy="75" r="1" fill="white" opacity="0.1"/><circle cx="50" cy="10" r="0.5" fill="white" opacity="0.1"/><circle cx="10" cy="60" r="0.5" fill="white" opacity="0.1"/><circle cx="90" cy="40" r="0.5" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
        animation: float 20s ease-in-out infinite;
    }

@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
    }

    50% {
        transform: translateY(-20px) rotate(180deg);
    }
}

.logo-section {
    position: relative;
    z-index: 2;
}

.logo-icon {
    font-size: 4rem;
    margin-bottom: 20px;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }
}

.logo-text {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 10px;
    letter-spacing: 2px;
}

.logo-subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 30px;
}

.welcome-text {
    font-size: 1.2rem;
    line-height: 1.6;
    opacity: 0.95;
}

.login-right {
    padding: 60px 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.login-header {
    text-align: center;
    margin-bottom: 0px;
}

.login-title {
    font-size: 2rem;
    color: #333;
    margin-bottom: 10px;
    font-weight: 600;
}

.login-subtitle {
    color: #666;
    font-size: 1rem;
}

.login-form {
    width: 100%;
}

.form-group {
    margin-bottom: 25px;
    position: relative;
}

    .form-group label {
        display: block;
        margin-bottom: 8px;
        color: #333;
        font-weight: 500;
        font-size: 0.95rem;
    }

.input-wrapper {
    position: relative;
}

.form-control {
    width: 100%;
    padding: 15px 20px 15px 50px;
    border: 2px solid #e1e5e9;
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: #f8f9fa;
}

    .form-control:focus {
        outline: none;
        border-color: #667eea;
        background: white;
        box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    }

.input-icon {
    position: absolute;
    left: 18px;
    top: 50%;
    transform: translateY(-50%);
    color: #999;
    font-size: 1.1rem;
}

.password-toggle {
    position: absolute;
    right: 18px;
    top: 50%;
    transform: translateY(-50%);
    color: #999;
    cursor: pointer;
    font-size: 1.1rem;
    transition: color 0.3s ease;
}

    .password-toggle:hover {
        color: #667eea;
    }

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.remember-me {
    display: flex;
    align-items: center;
    color: #666;
    font-size: 0.9rem;
}

    .remember-me input[type="checkbox"] {
        margin-right: 8px;
        transform: scale(1.1);
    }

.forgot-password {
    color: #667eea;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.3s ease;
}

    .forgot-password:hover {
        color: #5a67d8;
        text-decoration: underline;
    }

.login-btn {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

    .login-btn:hover {
        transform: translateY(-2px);
        box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
    }

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

    .login-btn.loading {
        pointer-events: none;
        opacity: 0.8;
    }

.btn-text {
    transition: opacity 0.3s ease;
}

.btn-spinner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.login-btn.loading .btn-text {
    opacity: 0;
}

.login-btn.loading .btn-spinner {
    opacity: 1;
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

.divider {
    text-align: center;
    margin: 30px 0;
    position: relative;
    color: #999;
    font-size: 0.9rem;
}

    .divider::before {
        content: '';
        position: absolute;
        top: 50%;
        left: 0;
        right: 0;
        height: 1px;
        background: #e1e5e9;
    }

    .divider span {
        background: white;
        padding: 0 20px;
    }

.quick-login {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-bottom: 30px;
}

.quick-login-btn {
    padding: 12px;
    border: 2px solid #e1e5e9;
    border-radius: 8px;
    background: white;
    color: #666;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 500;
    transition: all 0.3s ease;
}

    .quick-login-btn:hover {
        border-color: #667eea;
        color: #667eea;
        transform: translateY(-2px);
    }

    .quick-login-btn i {
        margin-right: 8px;
    }

.alert {
    padding: 12px 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 0.9rem;
    display: none;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.footer-links {
    text-align: center;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #e1e5e9;
}

    .footer-links a {
        color: #666;
        text-decoration: none;
        font-size: 0.9rem;
        margin: 0 15px;
        transition: color 0.3s ease;
    }

        .footer-links a:hover {
            color: #667eea;
        }

/* Responsive Design */
@media (max-width: 768px) {
    .login-container {
        grid-template-columns: 1fr;
        max-width: 400px;
    }

    .login-left {
        padding: 40px 30px;
        min-height: 300px;
    }

    .logo-icon {
        font-size: 3rem;
    }

    .logo-text {
        font-size: 2rem;
    }

    .login-right {
        padding: 40px 30px;
    }

    .login-title {
        font-size: 1.6rem;
    }

    .quick-login {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    body {
        padding: 10px;
    }

    .login-left {
        padding: 30px 20px;
    }

    .login-right {
        padding: 30px 20px;
    }

    .form-control {
        padding: 12px 15px 12px 45px;
    }

    .login-btn {
        padding: 12px;
    }
}

/* Animation for form validation */
.form-group.error .form-control {
    border-color: #dc3545;
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }

    25% {
        transform: translateX(-5px);
    }

    75% {
        transform: translateX(5px);
    }
}

.error-message {
    color: #dc3545;
    font-size: 0.8rem;
    margin-top: 5px;
    display: none;
}

.form-group.error .error-message {
    display: block;
}